Abstract
Background
People with cancer undergoing active treatment experience numerous disease‐ and treatment‐related adverse outcomes and poorer health‐related quality of life (HRQoL). Exercise interventions are hypothesized to alleviate these adverse outcomes. HRQoL and its domains are important measures of cancer survivorship, both during and after the end of active treatment for cancer.
Objectives
To evaluate the effectiveness of exercise on overall HRQoL outcomes and specific HRQoL domains among adults with cancer during active treatment.
Search methods
We searched the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed MEDLINE, EMBASE, CINAHL, PsycINFO, PEDRO, LILACS, SIGLE, SportDiscus, OTSeeker, Sociological Abstracts from inception to November 2011 with no language or date restrictions. We also searched citations through Web of Science and Scopus, PubMed's related article feature, and several websites. We reviewed reference lists of included trials and other reviews in the field.
Selection criteria
We included all randomized controlled trials (RCTs) and quasi‐randomized controlled clinical trials (CCTs) comparing exercise interventions with usual care or other type of non‐exercise comparison intervention to maintain or enhance, or both, overall HRQoL or at least one distinct domain of HRQoL. Included trials tested exercise interventions that were initiated when adults with cancer were undergoing active cancer treatment or were scheduled to initiate treatment.
Data collection and analysis
Five paired review authors independently extracted information on characteristics of included trials, data on effects of the intervention, and assessed risk of bias based on predefined criteria. Where possible, we performed meta‐analyses for HRQoL and HRQoL domains for the reported difference between baseline values and follow‐up values using standardized mean differences (SMDs) and a random‐effects model by length of follow‐up. We also reported the SMD at follow‐up between the exercise and control groups. Because investigators used many different HRQoL and HRQoL domain instruments and often more than one for the same domain, we selected the more commonly used instrument to include in the SMD meta‐analyses. We also report the mean difference for each type of instrument separately.
Main results
We included 56 trials with 4826 participants randomized to an exercise (n = 2286) or comparison (n = 1985) group. Cancer diagnoses in trial participants included breast, prostate, gynecologic, hematologic, and other. Thirty‐six trials were conducted among participants who were currently undergoing active treatment for their cancer, 10 trials were conducted among participants both during and post active cancer treatment, and the remaining 10 trials were conducted among participants scheduled for active cancer treatment. Mode of exercise intervention differed across trials and included walking by itself or in combination with cycling, resistance training, or strength training; resistance training; strength training; cycling; yoga; or Qigong. HRQoL and its domains were assessed using a wide range of measures.
The results suggest that exercise interventions compared with control interventions have a positive impact on overall HRQoL and certain HRQoL domains. Exercise interventions resulted in improvements in: HRQoL from baseline to 12 weeks' follow‐up (SMD 0.33; 95% CI 0.12 to 0.55) or when comparing difference in follow‐up scores at 12 weeks (SMD 0.47; 95% CI 0.16 to 0.79); physical functioning from baseline to 12 weeks' follow‐up (SMD 0.69; 95% CI 0.16 to 1.22) or 6 months (SMD 0.28; 95% CI 0.00 to 0.55); or when comparing differences in follow‐up scores at 12 weeks (SMD 0.28; 95% CI 0.11 to 0.45) or 6 months (SMD 0.29; 95% CI 0.07 to 0.50); role function from baseline to 12 weeks' follow‐up (SMD 0.48; 95% CI 0.07 to 0.90) or when comparing differences in follow‐up scores at 12 weeks (SMD 0.17; 95% CI 0.00 to 0.34) or 6 months (SMD 0.32; 95% CI 0.03 to 0.61); and, in social functioning at 12 weeks' follow‐up (SMD 0.54; 95% CI 0.03 to 1.05) or when comparing differences in follow‐up scores at both 12 weeks (SMD 0.16; 95% CI 0.04 to 0.27) and 6 months (SMD 0.24; 95% CI 0.03 to 0.44). Further, exercise interventions resulted in a decrease in fatigue from baseline to 12 weeks' follow‐up (SMD ‐0.38; 95% CI ‐0.57 to ‐0.18) or when comparing difference in follow‐up scores at follow‐up of 12 weeks (SMD ‐0.73; 95% CI ‐1.14 to ‐0.31). Since there is consistency of findings on both types of measures (change scores and difference in follow‐up scores) there is greater confidence in the robustness of these findings.
When examining exercise effects by subgroups, exercise interventions had significantly greater reduction in anxiety for survivors with breast cancer than those with other types of cancer. Further, there was greater reduction in depression, fatigue, and sleep disturbances, and improvement in HRQoL, emotional wellbeing (EWB), physical functioning, and role function for cancer survivors diagnosed with cancers other than breast cancer but not for breast cancer. There were also greater improvements in HRQoL and physical functioning, and reduction in anxiety, fatigue, and sleep disturbances when prescribed a moderate or vigorous versus a mild exercise program.
Results of the review need to be interpreted cautiously owing to the risk of bias. All the trials reviewed were at high risk for performance bias. In addition, the majority of trials were at high risk for detection, attrition, and selection bias.
Authors' conclusions
This systematic review indicates that exercise may have beneficial effects at varying follow‐up periods on HRQoL and certain HRQoL domains including physical functioning, role function, social functioning, and fatigue. Positive effects of exercise interventions are more pronounced with moderate‐ or vigorous‐intensity versus mild‐intensity exercise programs. The positive results must be interpreted cautiously because of the heterogeneity of exercise programs tested and measures used to assess HRQoL and HRQoL domains, and the risk of bias in many trials. Further research is required to investigate how to sustain positive effects of exercise over time and to determine essential attributes of exercise (mode, intensity, frequency, duration, timing) by cancer type and cancer treatment for optimal effects on HRQoL and its domains.
Plain language summary
Can exercise interventions enhance health‐related quality of life among people with cancer undergoing active treatment?
People with cancer undergoing treatment often have many psychological and physical adverse effects as a result of their cancer and the treatment for it. They also experience poorer quality of life because of the disease and its treatment. Some studies have suggested that exercise may be helpful in reducing negative outcomes and improving the quality of life of people with cancer who are undergoing treatment. Also, a better quality of life may predict longer life. This review looked at the effect of exercise on health‐related quality of life and areas of life that make up quality of life (e.g. tiredness, anxiety, emotional health) among people with cancer who are undergoing treatment.
The review included 56 trials with a total of 4826 participants. The results suggest that exercise may improve overall quality of life right after the exercise program is completed. Exercise may also improve the person's physical ability and the way the person can function in society. Exercise also reduced tiredness at different times during and after the exercise program. The positive effects of exercise were greater when the exercise was more intense. No effects of exercise was found in the way a person views his or her body, on the person's ability to think clearly, the person's mood, feeling of pain, and on the way the person views his or her spiritual health.
However, these findings need to be viewed with caution because this review looked at many different types of exercise programs, which varied by type of setting, length of the program, and how hard the trial participants had to exercise. Also, the investigators used a number of different ways to measure quality of life.
There is a need for more research to understand how to maintain the positive effects of exercise over a longer period of time after the exercise program is completed, and to determine which parts of the exercise program are necessary (i.e. when to start the program, type of exercise, length of the program or exercise session, how hard to exercise). It is also important to find out if one type of exercise is better for a specific cancer type than another for the maximum effect on quality of life.
Summary of findings
Summary of findings 1. Summary of findings.
Exercise compared with usual care on HRQoL and HRQoL domains for people with cancer during active treatment | ||||||
Patient or population: people who are undergoing active treatment for cancer Settings: varied Intervention: exercise interventions (varied) Comparison: usual care | ||||||
Outcomes | Illustrative comparative risks* (95% CI) | Relative effect (95% CI) | No of participants (studies) | Quality of the evidence (GRADE) | Comments | |
Assumed risk | Corresponding risk | |||||
Comparison group | Exercise group | |||||
Overall QoL change score ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in overall QoL in the control groups ranged from ‐0.65 to 0.70 standard deviation units | The standardized mean change from baseline to up to 12 weeks' follow‐up in overall QoL was 0.47 standard deviation units higher (0.16 to 0.79 standard deviation units higher) in the exercise groups | 806 (11 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD 0.47; 95% CI 0.16 to 0.79) A standard deviation unit is equivalent to about a 14.8‐point change using the FACT‐G HRQoL form |
|
Overall QoL follow‐up values ‐ up to 12 weeks' follow‐up | The standardized mean follow‐up values at up to 12 weeks' follow‐up in anxiety in the control groups ranged from ‐0.96 to 10.87 standard deviation units | The SMD in follow‐up values at up to 12 weeks' follow‐up in overall QoL was 0.33 standard deviation units higher (0.12 to 0.55 standard deviation units higher) in the exercise groups | 1166 (20 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD 0.33; 95% CI 0.12 to 0.55) | |
Overall anxiety follow‐up values ‐ up to 12 weeks' follow‐up | The standardized mean follow‐up values at up to 12 weeks' follow‐up in anxiety in the control groups ranged from 0.70 to 12.2 standard deviation units | The SMD in follow‐up values at up to 12 weeks' follow‐up in anxiety was ‐0.46 standard deviation units higher (‐0.81 to ‐0.11 standard deviation units higher) in the exercise groups | 1010 (12 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD ‐0.46; 95% CI ‐0.81 to ‐0.11) A standard deviation unit is equivalent to about a 2.7‐point change using the anxiety subscale of the HADS form or about 11.8 points using the STAI form |
|
Overall anxiety follow‐up values ‐ 6 months' follow‐up | The standardized mean follow‐up values at 6 months' follow‐up in anxiety in the control groups ranged from 0.10 to 0.40 standard deviation units | The SMD in follow‐up values at 6 months' follow‐up in anxiety was ‐0.44 standard deviation units higher (‐0.71 to ‐0.17 standard deviation units higher) in the exercise group | 286 (3 studies) | ⊕⊕⊝⊝ low1,3 | (SMD ‐0.44; 95% CI ‐0.71 to ‐0.17) | |
Overall depression follow‐up values ‐ up to 12 weeks' follow‐up | The standardized mean follow‐up values at up to 12 weeks' follow‐up in depression in the control groups ranged from 0.79 to 8.08 standard deviation units | The SMD in follow‐up values at up to 12 weeks' follow‐up in depression was ‐0.55 standard deviation units higher (‐0.87 to ‐0.22 standard deviation units higher) in the exercise groups | 1250 (15 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD ‐0.55; 95% CI ‐0.87 to ‐0.22) A standard deviation unit is equivalent to about an 8.86‐point change using the CES‐D form or a 2.29‐point change using the depression subscale of the HADS form |
|
Overall depression follow‐up values ‐ 6 months' follow‐up | The standardized mean follow‐up values at up to 12 weeks' follow‐up in depression in the control groups ranged from 1.07 to 1.44 standard deviation units. | The SMD in follow‐up values at up to 12 weeks' follow‐up in depression was ‐0.29 standard deviation units higher (‐0.48 to ‐0.09 standard deviation units higher) in the exercise groups | 452 (4 studies) | ⊕⊕⊝⊝ low1,3 | (SMD ‐0.29; 95% CI ‐0.48 to ‐0.09) | |
Overall fatigue change score ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in fatigue in the control groups ranged from ‐073 to 1.48 standard deviation units | The standardized mean change from baseline to up to 12 weeks' follow‐up in fatigue was ‐0.73 standard deviation units higher (‐1.14 to ‐0.31 standard deviation units higher) in the exercise groups | 971 (12 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD ‐0.73; 95% CI ‐1.14 to ‐0.31) A standard deviation unit is equivalent to about an 11‐point change using the fatigue subscale of the FACT form |
|
Overall fatigue follow‐up values ‐ up to 12 weeks' follow‐up | The standardized mean follow‐up values at up to 12 weeks' follow‐up in fatigue in the control groups ranged from ‐7.42 to 6.75 standard deviation units | The SMD in follow‐up values at up to 12 weeks' follow‐up in depression was ‐0.38 standard deviation units higher (‐0.57 to ‐0.18 standard deviation units higher) in the exercise groups | 1721 (23 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD ‐0.38; 95% CI ‐0.57 to ‐0.18) | |
Overall physical function change score ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in physical function in the control groups ranged from ‐26.3 to 0.33 standard deviation units | The standardized mean change from baseline to up to 12 weeks' follow‐up in physical function was 0.69 standard deviation units higher (0.16 to 1.22 standard deviation units higher) in the exercise groups | 540 (8 studies) | ⊕⊝⊝⊝ very low1,2,3,5 | (SMD 0.69; 95% CI 0.16 to 1.22) A standard deviation unit is equivalent to about a 5.4‐point change using the PWB subscale of the FACT form |
|
Overall physical function change score ‐ 6 months' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in physical function in the control groups ranged from ‐0.26 to 0.24 standard deviation units | The standardized mean change from baseline to 6 months' follow‐up in physical function was 0.28 standard deviation units higher (‐0.00 to 0.55 standard deviation units higher) in the exercise groups | 305 (4 studies) | ⊕⊝⊝⊝ very low1,2,5 | (SMD 0.28; 95% CI ‐0.00 to 0.55) | |
Overall role function change score ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in role function in the control groups ranged from ‐2.11 to ‐0.26 standard deviation units | The standardized mean change from baseline to up to 12 weeks' follow‐up in role function was 0.48 standard deviation units higher (0.07 to 0.9 standard deviation units higher) in the exercise groups | 437 (7 studies) | ⊕⊝⊝⊝ very low1,2,3,5 | (SMD 0.48; 95% CI 0.07 to 0.90) A standard deviation unit is equivalent to about a 5.5 point change using the functional subscale of the FACT form |
|
Overall role function follow‐up values ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in role function in the control groups ranged from ‐0.89 to 7.44 standard deviation units | The SMD in follow‐up values at up to 12 weeks' follow‐up in role function was 0.17 standard deviation units higher (0.00 to 0.34 standard deviation units higher) in the exercise groups | 1100 (15 studies) | ⊕⊕⊝⊝ low1,5 | (SMD 0.17; 95% CI 0.00 to 0.34) | |
Overall social function change score ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in social function in the control groups ranged from ‐0.71 to 0.11 standard deviation units | The standardized mean change from baseline to up to 12 weeks' follow‐up in social function was 0.54 standard deviation units higher (0.03 to 1.05 standard deviation units higher) in the exercise groups | 378 (5 studies) | ⊕⊝⊝⊝ very low1,2,3,5 | (SMD 0.54; 95% CI 0.03 to 1.05) A standard deviation unit is equivalent to about a 5.4 point change using the social well‐being subscale of the FACT form |
|
Overall social function follow‐up values ‐ up to 12 weeks' follow‐up | The standardized mean change from baseline to up to 12 weeks' follow‐up in social function in the control groups ranged from ‐0.41 to 8.00 standard deviation units | The SMD in follow‐up values at up to 12 weeks' follow‐up in social function was 0.16 standard deviation units higher (0.04 to 0.27 standard deviation units higher) in the exercise groups | 1164 (16 studies) | ⊕⊕⊝⊝ low1,5 | (SMD 0.16; 95% CI 0.04 to 0.27) | |
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% CI) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CES‐D: Centers for Epidemiological Studies ‐ Depression Scale; CI: confidence interval: FACT: Functional Assessment of Cancer Therapy; FACT‐G; Functional Assessment of Cancer Therapy ‐ General; HADS: Hospital Anxiety and Depression Scale; HRQoL: health‐related quality of life; PWB: physical well‐being; QoL: quality of life; SMD: standardized mean difference; STAI: State‐Trait Anxiety Scale. | ||||||
GRADE Working Group grades of evidence High quality: Further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: We are very uncertain about the estimate. |
1 It was not possible to blind study participants or people administering treatment
2 Statistical heterogeneity was moderate to high
3 The small total population sample size (< 500) represents a small effect
4 Random sequence generation was unclear in half or more of the trials
5 Allocation concealment was unclear in half of more of the trials
Background
There is a steady increase in the number of cancer survivors, that is people diagnosed with cancer (Aziz 2003), worldwide. This is because of, in a large part, the dramatic advances in cancer treatment and management (Aziz 2002; Aziz 2003), growing attention to multidisciplinary post‐treatment care (Demark‐Wahnefried 2000; Stull 2007), and healthier lifestyles (Demark‐Wahnefried 2005; Stull 2007). There are approximately 22 million cancer survivors worldwide (Stewart 2003); 11.7 million of whom are estimated to be present in the US alone (Rowland 2011).
Description of the condition
People with cancer undergoing active treatment experience numerous disease‐ or treatment‐related adverse outcomes, or both (physiologic and psychosocial) (Aziz 2002; Aziz 2003; Aziz 2007; Aziz 2008; Cramp 2008) and poorer health‐related quality of life (HRQoL) (Ganz 2004; Lee 2007b). Some of the adverse outcomes include cardiotoxicity, neurotoxicity, lymphedema, premature menopause, sexual dysfunction, infertility, and fatigue (Aziz 2002; Aziz 2003; Aziz 2007; Cramp 2008), all with a negative impact on HRQoL. Exercise interventions are particularly relevant because they influence both the physiologic and psychosocial adverse outcomes, including HRQoL (Courneya 2007b; Ingram 2007; Schmitz 2005; Warburton 2006). Further, HRQoL and its domains are important measures for cancer survivorship as they provide prognostic (Gotay 2008) and predictive (Efficace 2006; Osoba 1999; Osoba 2007) information and the survivors'' subjective experiences (Bottomley 2002) to therapeutic and lifestyle interventions.
Although HRQoL has no commonly accepted definition, there is broad consensus that it is a patient‐reported, multidimensional construct. Ferrans provided a comprehensive review of definitions of HRQoL and concluded that, "the literature contains a bewildering array of characterizations" (Ferrans 2005). Nonetheless, the review indicated that there is broad consensus among experts (Bottomley 2002; Gotay 1992; Lipscomb 2007; Osoba 1994) regarding the major domains of HRQoL. These domains comprise subjective assessments of physical, psychological, economic, social, and spiritual wellbeing. Physical function includes performance of self‐care activities, mobility, and physical activities. Psychological functions include EWB, anxiety, body image, and depression. Social and economic functions include work or household responsibilities and social interactions. Spiritual wellbeing includes perspectives on one's life as a whole. HRQoL also encompasses the negative aspects of the disease or treatment such as sexual functioning, neuropathy or cognitive changes, and chronic fatigue. Lastly, the importance of also assessing positive aspects of HRQoL has been stressed (Diener 2000). Our selection of the primary outcomes for this review reflects these theoretical perspectives, in that we included both all the well‐agreed upon domains of HRQoL and positive aspects of wellbeing.
Description of the intervention
The benefits of exercise on health status, length of survival, promotion of HRQoL, and mitigating premature death are gaining wide attention (Warburton 2006). There is some evidence suggesting that participation in exercise by people with cancer undergoing active treatment increases physical functioning (Courneya 2009; Griffith 2009; McNeely 2006; Stevinson 2004), reduces fatigue (Adamsen 2009; Cramp 2008), reduces pain (Griffith 2009), reduces treatment‐related toxicity (Kapur 2009), and facilitates positive physiologic and psychological benefits (Galvao 2005; Knols 2005; Schmitz 2005). In addition, evidence suggests that exercise enhances HRQoL during active treatment in people with breast (McNeely 2006; Mustian 2009; Valenti 2008), prostate (Galvao 2010; Mustian 2009; Segal 2009; Thorsen 2008), head and neck (Rogers 2006), and colorectal (Courneya 2003b) cancer, and multiple myeloma (Jones 2004). Further, exercise leads to improvements in physical functioning and a reduction in fatigue symptoms during active treatment in people with breast (McNeely 2006; Mustian 2009) and prostate (Galvao 2010; Mustian 2009; Segal 2009; Thorsen 2008) cancer. Despite the growing body of literature documenting the beneficial effects of exercise (Courneya 2007b), several studies have documented lower levels of exercise behavior among people diagnosed with cancer (Blanchard 2003; Valenti 2008; Vallance 2005).
How the intervention might work
There is tremendous interest in the association between exercise and physiologic and psychological wellbeing in general and HRQoL in particular. Systematic reviews on the effects of exercise interventions on people with cancer during active treatment have documented improvements in cardiorespiratory fitness (McNeely 2006; Schmitz 2005), physical function (McNeely 2006; Stevinson 2004; Thorsen 2008), psychological wellbeing (Galvao 2005; Knols 2005; Speck 2010), overall HRQoL (Knols 2005; Speck 2010), fatigue (Cramp 2008; McNeely 2006; Mustian 2007; Velthuis 2010a), and physiologic outcomes (Galvao 2005; Knols 2005; Schmitz 2005).
Why it is important to do this review
There is no systematic review examining the effect of exercise on: (a) overall HRQoL or HRQoL domains, or both (e.g. physical, psychological, economic, social, and spiritual wellbeing); and (b) disease‐ or treatment‐related symptoms (or both) (e.g. sexual functioning, neuropathy or cognitive changes, and chronic fatigue) among adults with cancer during active treatment. This review is different from previous systematic reviews in the number of databases searched (Galvao 2005; Schmitz 2005) and on the inclusion criteria for the trials. Several of the previous reviews included trials with non‐randomized controlled trial (non‐RCT) designs (Galvao 2005; Schmitz 2005; Stevinson 2004; Thorsen 2008), people with cancer during active treatment and in the immediate post‐treatment phase (Cramp 2008; Galvao 2005; Knols 2005; McNeely 2006; Schmitz 2005; Stevinson 2004), and site‐specific cancers (McNeely 2006; Thorsen 2008). This lack of documentation and evidence coupled with limitations of the previous reviews necessitated a systematic review to determine the effectiveness of exercise on HRQoL among adults with cancer during active treatment. This review complements a previously published protocol that described a systematic review determining the effectiveness of exercise interventions on HRQoL among adult cancer survivors who were beyond the active treatment period (Mishra 2009).
Objectives
To evaluate the effectiveness of exercise on overall HRQoL outcomes and specific HRQoL domains (e.g. physical, psychological, economic, social, and spiritual wellbeing, and key disease or treatment (or both) symptoms such as sexual functioning, neuropathy or cognitive changes, and chronic fatigue) among adults with cancer who are undergoing active treatment (excluding those who are terminally ill and receiving hospice care).
A secondary objective examined, where data were available, the effectiveness of exercise on HRQoL outcomes among adults with cancer who were undergoing active treatment stratified by the following:
age at diagnosis (i.e. less than 65 years or greater than or equal to 65 years);
Age at trial enrolment (i.e. less than 65 years or greater than or equal to 65 years);
Sex;
Type of prescribed exercise (i.e. aerobic, anaerobic, combination);
Intensity of exercise (i.e. mild, moderate, vigorous);
Format of exercise (i.e. individual or group, professionally led or not, home or group facility);
Type of treatment regimen (i.e. radiation, surgery, chemotherapy, or combination); and
Specific chemotherapeutic agents.
Methods
Criteria for considering studies for this review
Types of studies
We included only randomized controlled trials (RCTs) and quasi‐randomized controlled clinical trials (CCTs). The included trials assessed exercise interventions that were initiated when people with cancer were undergoing active cancer treatment (i.e. surgery, chemotherapy, radiation therapy, or hormone therapy) or were scheduled to initiate treatment.
Types of participants
Included trials evaluated the effect of exercise on HRQoL among people with cancer undergoing active treatment who were diagnosed as adults (18 years and over) regardless of age, sex, tumor site, tumor type, tumor stage, and type of anticancer treatment received. We excluded trials including participants who were terminally ill or receiving hospice care, or both, and trials in which fewer than one‐third of participants were undergoing active treatment for either the primary or a recurrent cancer.
Types of interventions
We included trials that evaluated and reported the effects of exercise, excluding dance, on HRQoL outcomes. We excluded trials only evaluating dance as an intervention because there is a Cochrane review on dance movement therapy for improving psychological and physical outcomes in patients with cancer (Bradt 2011). Included trials compared exercise with no exercise, another intervention, or usual care (e.g. with no specific exercise program prescribed).
We defined exercise as any physical activity causing an increase in energy expenditure, and involving a planned or structured movement of the body performed in a systematic manner in terms of frequency, intensity, and duration, and designed to maintain or enhance health‐related outcomes (American College of Sports Medicine 1998; American College of Sports Medicine 2005). The primary exercise intervention included prescribed, active exercise formats of aerobic, anaerobic, or aerobic and anaerobic combinations focused upon cardiopulmonary, musculoskeletal, neuromuscular conditioning, or a combination: active or active‐assisted range of motion (ROM), stretching exercises, and strengthening or resistance exercises. The specific prescribed, active exercise included but was not limited to the following methods: walking programs, aquatic exercise, running, sports, resistance training, yoga, tai chi, and pilates. The prescribed, active exercise program was individual or group, professionally led or not, and home or facility based. Exercise intensity was based on the rate of perceived exertion (RPE) or heart rate (HR), or both, with mild exercise defined as RPE of six to 11 or HR at 30% to 54% of maximum HR, or both; moderate exercise was defined as RPE of 12 to 13 or HR at 55% to 70% of maximal HR, or both; and vigorous exercise was defined as RPE of 14 to 19 or HR at 71% to 95% of maximal HR, or both (American College of Sports Medicine 1998). We classified the intensity of the exercise based on RPE or HR, or both, or when a quantitative measure of intensity of the exercise intervention was not available, we used the authors' classification of an intervention as mild, moderate, or vigorous.
Types of outcome measures
The included trials measured self‐reported participant measures of HRQoL as primary or secondary end points.
Primary outcomes
Overall HRQoL, at four follow‐up intervals: up to 12 weeks; more than 12 weeks but less than six months, six months, and more than six months following the exercise intervention.
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HRQoL domains, at the four time intervals described above including, but not limited to:
physical function (e.g. performance of self‐care activities, mobility, physical activities);
psychological function (e.g. EWB, anxiety, body image, depression, negative affect);
social and economic role function (e.g. performance of work or household responsibilities, social interactions);
spiritual well‐being;
pain;
vitality (e.g. energy and fatigue);
general health perceptions; and
positive attributes (e.g. positive affect, sense of coherence, interpersonal relationships, philosophy of life, spirituality).
Disease‐ or treatment‐related symptoms (or both) (e.g. sexual functioning, neuropathy or cognitive changes, chronic fatigue).
The adverse outcomes of interest included:
any harm associated with the exercise intervention; and
decrease in overall HRQoL or HRQoL domain.
Search methods for identification of studies
Electronic searches
We used, at the minimum, the following databases and searches to obtain relevant trials for this review. We searched all databases from inception to the present. There were no language or date restrictions in the electronic search for trials. We utilized the search strategy for MEDLINE for the review using text and indexing terms in each database, combined with filters for RCT and CCT, and human studies (Glanville 2006). The MEDLINE search strategy was developed for precision and sensitivity and was then appropriately modified for the other databases.
MEDLINE (Appendix 1)
The Cochrane Central Register of Controlled Trials (CENTRAL) (Appendix 2)
EMBASE (Appendix 3)
CINAHL (Appendix 4)
PsycINFO (Appendix 5)
PEDRO (Appendix 6)
LILACS (Appendix 6)
SIGLE (Appendix 6)
SportDiscus (Appendix 6)
OTSeeker (Appendix 6)
Sociological Abstracts (Appendix 6)
We also searched citations of key authors through Web of Science and Scopus, and searched PubMed's related article feature.
The review author team developed and executed the search strategies.
Searching other resources
We performed an expanded search in order to identify additional trials for this review, including unpublished trials and references in the "gray literature". This included the following:
review of the reference list of all retrieved articles and other reviews on the topic;
contacting experts in the field of exercise and HRQoL in order to identify unpublished research;
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searching the following websites:
World Health Organization (WHO) International Clinical Trials Registry Platform (www.who.int/ictrp/en)
Current Controlled Trials (www.controlled-trials.com)
CenterWatch (www.centerwatch.com)
ClinicalTrials.gov (www.clinicaltrials.gov)
We did not handsearch any journals specifically for this review.
Data collection and analysis
Selection of studies
Assessment of search results
Two review authors (SM, RS), working independently, screened all the titles and abstracts resulting from the searches and excluded articles that were clearly irrelevant. We retrieved full‐text copies of all trials if either review author determined that a trial possibly or definitely met the inclusion criteria. We translated into English, where possible, all non‐English language articles. Paired review authors (SM, RS, CS, PG, OT) independently reviewed the retrieved full‐text articles and, using the defined eligibility criteria, determined their eligibility for inclusion. We did not randomly assign articles to review authors neither did we mask trial details such as trial authors, journal of publication, trial location, and institutional affiliations of the trial authors. If there was a need for clarification of any detail of a trial, we contacted the trial authors to obtain such clarification for a complete assessment of the trial's relevance for the review. We resolved by consensus any disagreement between review authors on classification of an article, either between the two review authors or through use of a third review author.
Data extraction and management
Extraction of study characteristics
For each trial, we extracted:
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Characteristics of the studies:
the study sponsors and the authors' affiliations;
trial methods: study design, method of sequence generation, method of allocation concealment, masking (participant, researcher, outcome), exclusions after randomization, selective outcome reporting, loss to follow‐up and compliance.
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Characteristics of study population:
country where participants enrolled;
trial inclusion and exclusion criteria;
number randomized in each arm;
type of control group;
demographic characteristics, including age at trial enrolment, sex, ethnicity, socioeconomic status;
type of cancer, including primary site, stage at diagnosis, and hormone dependency;
age at diagnosis;
time since diagnosis;
primary or secondary cancer;
type of treatment regimen (i.e. radiation, surgery, chemotherapy, or combination)
specific chemotherapeutic agents.
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Characteristics of the intervention:
type of exercise intervention in each intervention group: aerobic, anaerobic, combination;
description/details of the exercise intervention: frequency, duration, intensity, total number of exercise sessions, duration of follow‐up, exercise format (i.e. individual or group, professionally led or not, home or facility based);
description/details of control/comparison intervention;
adherence and contamination;
co‐intervention (e.g. medication use).
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Characteristics of the outcomes:
self‐reported HRQoL measure or HRQoL domain measures, or both (e.g. physical, psychological, economic, social, and spiritual well‐being, pain, vitality, health perceptions, positive attributes);
disease or treatment symptoms, or both (e.g. sexual functioning, neuropathy or cognitive changes, and chronic fatigue);
length of time between end of intervention and outcome measurement;
adverse outcomes (e.g. exercise‐associated harm, noncompliance with exercise program, trial attrition);
economic data on cost and cost‐benefit of the exercise intervention.
Data extraction and entry
Paired review authors (SM, RS, CS, PG, OT) independently extracted data, using a standardized form, from each article. Disagreements between the review authors on the data abstracted were resolved through consensus or, when necessary, there was a meeting with a third review author not involved in the particular extraction (SM, RS). In addition, we attempted to contact all trial authors (using e‐mail, letter, fax, or a combination) to search for additional articles, seek clarity and additional information about trials, confirm data extraction, and obtain missing data using a structured instrument with standardized questions. If the trial authors could not provide the requested information or were unable to comply with the request within two weeks, we proceeded with the review without the information. If available, we extracted similar data for each outcome from each trial included in the review. For the primary and secondary HRQoL outcomes, if more than two time points were reported during a single interval, the one closest to 12 weeks (for the follow‐up time point), or the longest time interval (for the other follow‐up time points) was selected for analyses. We also collected information on any harm reported in the included trials. We collected data, if reported, on cost and cost‐benefit of the exercise interventions. The unit of analysis was individuals, people with cancer undergoing active treatment randomized to each arm of the trial. We entered and combined the trial data using Review Manager, version 5.1 (RevMan 2011). One review author (RS) entered the data into RevMan 5.1, and another review author (SM) worked independently to verify the data entry.
Assessment of risk of bias in included studies
Two review authors (SM, RS) assessed the risk of bias of all the included trials by evaluating the parameters listed on the RevMan 5.1 'Risk of bias' table (RevMan 2011). For RCTs and CCTs this included assessment of sequence generation, allocation concealment, masking or blinding (of participants, researchers/healthcare providers, and outcome assessors), methods of addressing incomplete outcome data, selective reporting of outcomes, and other possible sources of bias including attrition from, and adherence with, the exercise intervention. We assessed and graded each trial quality parameter as high risk, low risk, or unclear risk based on recommendations for judging risk of bias provide in Chapter 8 of the Cochrane Handbook for Systematic Reviews of Interventions (Higgins 2011).
Comparability of treatment groups
Using RCTs and CCTs, by definition, ensures comparability of the treatment groups. However, it is likely that randomization (or quasi‐randomization) may not work as desired. We looked at the baseline characteristics (i.e. demographic characteristics and attributes of the cancer and its treatment) of the treatment groups for any differences between the groups or whether the differences were controlled for during the analyses. In particular, we recorded:
yes, there were differences between the treatment groups on one or more baseline characteristic and the reported differences were controlled for;
no, there were differences between the treatment groups on one or more baseline characteristic and the reported differences were not controlled for;
unclear, differences between the treatment groups were not reported and unclear whether they were controlled for.
Measures of treatment effect
Trials reported data on HRQoL or HRQoL domains, or both in different ways or used different instruments to measure the same construct, but all reported continuous (versus dichotomous) outcomes. If necessary, we planned to transform outcome data to achieve consistency of results, but did not need to do so for this review. We combined data using a weighted mean difference (WMD) and a random effect model when trials measured HRQoL or HRQoL domains using the same measurement method or scale to generate continuous data. We used a standardized mean difference (SMD) analysis and random‐effects model to combine data from different instruments measuring the same domain. When there was significant clinical or statistical heterogeneity, we performed subgroup analyses or provided a qualitative analysis rather than a quantitative analysis of HRQoL or HRQoL domains.
Authors did not report any dichotomous data, such as presence or absence of an HRQoL outcome, but if they had, we would have expressed the treatment effect as risk ratio (RR) together with 95% confidence interval (CI).
Whenever possible, we conducted subgroup analysis of treatment effect based on:
-
Grouping of the exercise intervention on:
type (i.e. aerobic, anaerobic, combination);
intensity (i.e. mild, moderate, vigorous); and
format (i.e. individual or group, professionally led or not, home or facility based).
-
Grouping of people with cancer on:
sex;
cancer type;
age at trial enrolment (i.e. less than 65 years or greater than or equal to 65 years);
age at diagnosis (i.e. less than 65 years or greater than or equal to 65 years);
type of treatment regimen (i.e. radiation, surgery, chemotherapy, or combination); and
specific chemotherapeutic agents.
Assessment of heterogeneity
We evaluated clinical heterogeneity by examining diversity in the people with cancer undergoing active treatment, and differences in cancers, the exercise interventions, and overall HRQoL or HRQoL domains, or both among trials. We did not pool clinically heterogeneous trials. We also checked for statistical heterogeneity by visual inspection of forest plots and by using the Chi square (Chi2) and the I2 tests.
Assessment of reporting biases
To investigate publication bias, we prepared funnel plots and visually examined them for signs of asymmetry. We followed the recommendations in Chapter 10 of the Cochrane Handbook for Systematic Reviews of Interventions (Sterne 2011) for any statistical testing for funnel plot asymmetry. If there was statistically significant asymmetry, we considered interpretations other than publication bias.
Data synthesis
Measurement of intervention intensity
We reported the authors' classification of the intensity of the exercise based on RPE, HR, or both, or on authors' classification of the intensity of the exercise intervention as mild, moderate, or vigorous.
We combined data from trials in a meta‐analysis when appropriate to pool for a meta‐analysis, that is, those data showing no clinical heterogeneity. When there was moderate clinical heterogeneity, we conducted prespecified subgroup analyses (i.e. type of cancer, intensity of exercise, etc. as mentioned above). When there was significant heterogeneity as demonstrated by a statistically significant Chi2 test or I2 above 50%, we investigated source of heterogeneity and if possible, conducted a quantitative meta‐analysis by subgroups only. We pooled all studies (or all similar studies) for a random‐effects meta‐analysis to determine the pooled intervention effect estimate (odds ratio (OR) and 95% CI).
Sensitivity analysis
We also conducted sensitivity analysis to assess the effects of including trials with a high risk of bias.
Results
Description of studies
Results of the search
See: Characteristics of included studies; Characteristics of excluded studies; Characteristics of studies awaiting classification; Characteristics of ongoing studies
Through a comprehensive literature search, we identified and screened for retrieval 1896 nonduplicate potentially relevant references. We excluded a total of 1703 references based on the title and abstract and retrieved 193 references for more detailed evaluation. From these, we excluded 102 trials as they did not meet the inclusion criteria and 56 trials were appropriate for inclusion in the current review. In addition, six trials (Christensen 2011; Galvao 2009; Haseen 2010; Newton 2009; van Waart 2010; Velthuis 2010) were ongoing and four trials (Courneya 2001; Harandi 2010; Sun 2009; Utz‐Billing 2010) were awaiting classification and these trials were not included in the analysis presented below but will be considered in future updates of this review. Twenty‐five eligible trials were also not included in the analysis as these trials were classified as secondary publications for some of the 56 trials included in the current review. All searches were completed in November 2011. See Figure 1 for a flowchart of the search process based on the PRISMA template (Moher 2009).
Included studies
The final selection based on consensus resulted in 56 trials being included in this review (Adamsen 2009; Arbane 2009; Banerjee 2007; Battaglini 2008; Bourke 2011; Brown 2006; Cadmus 2009; Caldwell 2009; Campbell 2005; Chandwani 2010; Chang 2008; Cheville 2010; Cohen 2004; Courneya 2003a; Courneya 2007a; Courneya 2008; Courneya 2009; Crowley 2003; Culos‐Reed 2010; Danhauer 2009; de Oliveira 2010; Dimeo 1999; DiSipio 2009; Donnelly 2011; Galvao 2010; Gomes 2011; Griffith 2009; Hacker 2011; Haddad 2011; Headley 2004; Hwang 2008; Jarden 2009; Lanctot 2010; Moadel 2007; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Monga 2007; Moros 2010; Mustian 2009; Mutrie 2007; Oh 2008; Oh 2010; Raghavendra 2007; Rogers 2009; Segal 2001; Segal 2003; Segal 2009; Tang 2010; Targ 2002; Vadiraja 2009b; Wang 2010; Windsor 2004; Wiskemann 2011; Yang 2011). We also reviewed and included information on study characteristics and outcomes related data from an additional 25 publications that were secondary publications to several of the 56 trials. For seven trials, there were limited data available for extraction and quantitative analysis (Brown 2006; DiSipio 2009; Gomes 2011; Haddad 2011; Headley 2004; Mock 1997; Oh 2008) and for two trials there were no data available for extraction and use in the quantitative analyses (Battaglini 2008; Mock 2001). We corresponded with, and requested additional data from, these nine trial authors and an additional 13 trial authors (Arbane 2009; Campbell 2005; Cheville 2010; Crowley 2003; Culos‐Reed 2010; Griffith 2009; Jarden 2009; Lanctot 2010; Mock 1994; Raghavendra 2007; Segal 2001; Tang 2010; Yang 2011), and five of the 22 trial authors contacted were able to provide additional data. Of the remaining 17 trials for which we requested additional data, we were unable to contact the primary author for seven trials, received no response from six trial authors, and four trial authors either did not have access to their database or were unable to provide additional information for some other reasons. For trial characteristics and outcomes see the Characteristics of included studies table.
Overall study characteristics
Of the 56 included trials, 54 were RCTs, although one trial (Courneya 2003a) used a variation of the RCT design in that it randomized clusters, where clusters were psychotherapy classes. Two trials (Dimeo 1999; Mock 1997) used a quasi‐randomized design to allocate participants to treatment. All trials, except for four (Courneya 2007a; Haddad 2011; Segal 2001; Segal 2009), randomized eligible participants to either the exercise or comparison arm. The other four trials included more than two study arms. The additional study arm comprised variations in the exercise arm, such as aerobic exercise or resistance exercise group (Courneya 2007a; Segal 2009), yoga exercise or stretching exercise group (Haddad 2011), and home‐based exercise or supervised exercise group (Segal 2001). In all, 4826 (range 14 to 337) participants were randomized to an exercise intervention (n = 2286; range 9 to 135) or a comparison group (n = 1985; range 5 to 134). Six trials (Battaglini 2008; DiSipio 2009; Gomes 2011; Headley 2004; Mock 2001; Monga 2007) did not report the number of participants assigned to the exercise and control groups. In five trials (Chandwani 2010; Hacker 2011; Hwang 2008; Mock 1997; Yang 2011), the number of participants randomized to the exercise and comparison arms did not add up to the number of participants randomized in the trial. For detailed information on overall study characteristics see Characteristics of included studies table.
Participants
Participants enrolled in the trials had various cancer diagnoses including breast, prostate, gynecologic, hematologic, and other. Thirty trials investigated participants with breast cancer only (Banerjee 2007; Battaglini 2008; Cadmus 2009; Caldwell 2009; Campbell 2005; Chandwani 2010; Courneya 2007a; Crowley 2003; Danhauer 2009; de Oliveira 2010; DiSipio 2009; Gomes 2011; Haddad 2011; Headley 2004; Hwang 2008; Lanctot 2010; Moadel 2007; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Moros 2010; Mutrie 2007; Raghavendra 2007; Rogers 2009; Segal 2001; Targ 2002; Vadiraja 2009b; Wang 2010; Yang 2011) and an additional seven trials investigated participants with prostate cancer only (Bourke 2011; Culos‐Reed 2010; Galvao 2010; Monga 2007; Segal 2003; Segal 2009; Windsor 2004). Twelve trials investigated participants with a range of cancer diagnoses (Adamsen 2009; Brown 2006; Cheville 2010; Courneya 2003a; Courneya 2008; Dimeo 1999; Donnelly 2011; Griffith 2009; Mustian 2009; Oh 2008; Oh 2010; Tang 2010).
Thirty‐six trials were conducted among participants who were currently undergoing active treatment for their cancer (Adamsen 2009; Arbane 2009; Banerjee 2007; Bourke 2011; Cadmus 2009; Campbell 2005; Chang 2008; Cheville 2010; Courneya 2007a; Courneya 2008; Crowley 2003; de Oliveira 2010; Dimeo 1999; DiSipio 2009; Galvao 2010; Gomes 2011; Griffith 2009; Hacker 2011; Haddad 2011; Lanctot 2010; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Monga 2007; Moros 2010; Mustian 2009; Mutrie 2007; Raghavendra 2007; Rogers 2009; Segal 2001; Segal 2009; Vadiraja 2009b; Wang 2010; Wiskemann 2011; Yang 2011), 10 trials were conducted among participants both during and post active cancer treatment (Cohen 2004; Courneya 2003a; Courneya 2009; Danhauer 2009; Donnelly 2011; Moadel 2007; Oh 2008; Oh 2010; Tang 2010; Targ 2002), and the remaining 10 trials were conducted among participants scheduled for active cancer treatment (Battaglini 2008; Brown 2006; Caldwell 2009; Chandwani 2010; Culos‐Reed 2010; Headley 2004; Hwang 2008; Jarden 2009; Segal 2003; Windsor 2004). One of the trials (Moadel 2007) conducted among participants both during and post active treatment reported data separately on participants who had completed treatment and those who were undergoing treatment, and we included only data on those undergoing treatment in this review. Eleven trials reported the time since cancer diagnosis and it ranged across the trials from about a mean of 11 weeks to about a mean of 3.5 years (Adamsen 2009; Cadmus 2009; Courneya 2003a; Courneya 2009; Danhauer 2009; Donnelly 2011; Moadel 2007; Mutrie 2007; Segal 2003; Tang 2010; Targ 2002). Twenty‐nine trials were conducted among females (Banerjee 2007; Battaglini 2008; Cadmus 2009; Campbell 2005; Chandwani 2010; Courneya 2007a; Crowley 2003; Danhauer 2009; de Oliveira 2010; DiSipio 2009; Donnelly 2011; Gomes 2011; Hacker 2011; Haddad 2011; Headley 2004; Hwang 2008; Moadel 2007; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Moros 2010; Mutrie 2007; Raghavendra 2007; Rogers 2009; Segal 2001; Targ 2002; Vadiraja 2009b; Wang 2010), nine trials among men (Arbane 2009; Bourke 2011; Caldwell 2009; Culos‐Reed 2010; Galvao 2010; Monga 2007; Segal 2003; Segal 2009; Windsor 2004), 17 trials included a mixed sample of males and females (Adamsen 2009; Brown 2006; Chang 2008; Cheville 2010; Cohen 2004; Courneya 2003a; Courneya 2008; Courneya 2009; Dimeo 1999; Griffith 2009; Jarden 2009; Mustian 2009; Oh 2008; Oh 2010; Tang 2010; Wiskemann 2011; Yang 2011), with one trial not reporting on the gender of the participants (Lanctot 2010). The mean age of participants ranged between 40 and 71 years, with two trials reporting an age range rather than mean age of participants (Moros 2010; Oh 2008) and six trials not reporting on the age of the participants (Brown 2006; Crowley 2003; de Oliveira 2010; DiSipio 2009; Lanctot 2010; Raghavendra 2007). Twenty‐one trials reported the ethnicity of the participants and 33 trials reported the education level of the participants. Eleven trials reported on the socio‐demographic status of the participants and 23 trials reported on the employment status of the participants. Eighteen trials reported the past exercise history of the participants (Adamsen 2009; Bourke 2011; Campbell 2005; Chandwani 2010; Cohen 2004; Courneya 2003a; Courneya 2007a; Courneya 2008; Courneya 2009; Danhauer 2009; Jarden 2009; Mustian 2009; Segal 2001; Segal 2003; Targ 2002; Vadiraja 2009b; Wang 2010; Wiskemann 2011). For detailed information on trial characteristics see Characteristics of included studies table.
Interventions
Mode of exercise differed across trials. Twenty‐two trials prescribed walking by itself (Chang 2008; Courneya 2003a; Griffith 2009; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Monga 2007; Rogers 2009; Segal 2001; Tang 2010; Wang 2010; Windsor 2004; Yang 2011) or in combination with cycling, resistance training, or strength training (Courneya 2007a; Crowley 2003; Culos‐Reed 2010; Donnelly 2011; Galvao 2010; Hwang 2008; Mustian 2009; Wiskemann 2011). Ten trials prescribed resistance training in combination with cycling, walking, stretching, strength training, or various other exercise modalities (Adamsen 2009; Battaglini 2008; Bourke 2011; Brown 2006; Courneya 2007a; Culos‐Reed 2010; Galvao 2010; Jarden 2009; Mustian 2009; Segal 2009) and two additional trials prescribed resistance training by itself (Hacker 2011; Segal 2003); and eight trials prescribed cycling by itself (Courneya 2008; Courneya 2009; Dimeo 1999) or in combination with resistance training, walking, stretching, or strength training (Courneya 2007a; Galvao 2010; Hwang 2008; Jarden 2009; Wiskemann 2011). Eight trials prescribed yoga by itself (Banerjee 2007; Chandwani 2010; Cohen 2004; Danhauer 2009; Lanctot 2010; Moadel 2007; Raghavendra 2007; Vadiraja 2009b) and one trial prescribed yoga to one intervention arm and stretching exercise to the second intervention arm (Haddad 2011) and two trials incorporated practices of Qigong (Oh 2008; Oh 2010). Thirteen trials incorporated a range of modalities or allowed participants to choose from a range of preferred modalities (Adamsen 2009; Bourke 2011; Brown 2006; Caldwell 2009; Campbell 2005; Cheville 2010; Courneya 2003a; de Oliveira 2010; Griffith 2009; Headley 2004; Mutrie 2007; Segal 2009; Targ 2002). Five trials did not provide details of their exercise program (Arbane 2009; Cadmus 2009; DiSipio 2009; Gomes 2011; Moros 2010).
In the majority of trials (n = 46) the comparison arm did not receive an exercise prescription (i.e. 'usual care' or 'no intervention') during the course of the trial. For 15 of these trials (Cadmus 2009; Chang 2008; Donnelly 2011; Galvao 2010; Griffith 2009; Hacker 2011; Headley 2004; Hwang 2008; Mock 1997; Mock 2001; Mock 2005; Rogers 2009; Segal 2009; Windsor 2004; Yang 2011), participants in the control arm were instructed to either continue their customary physical activity, requested not to exercise, received written materials about physical activity, advised to rest, or received visits or telephone call from trial staff for attention control; and, for an additional ten trials (Chandwani 2010; Cohen 2004; Courneya 2007a; Courneya 2009; Culos‐Reed 2010; Danhauer 2009; Haddad 2011; Moadel 2007; Segal 2003; Tang 2010), the comparison arm was a 'waiting list' control where participants were offered either a portion or the full exercise program at the completion of the trial. The comparison group in seven trials received an intervention that included group therapy (Courneya 2003a); brief supportive therapy (Vadiraja 2009b); psychodynamic supportive‐expressive therapy with coping preparation (Raghavendra 2007); psycho‐educational support group (Targ 2002); informed that moderate physical activity was beneficial and told to wear a pedometer (Wiskemann 2011); and advised on the benefits of exercise (Segal 2001) coupled with suggestions to exercise (Banerjee 2007; Segal 2001). Three trials did not either provide sufficient information (Battaglini 2008; Lanctot 2010) or report on care received (DiSipio 2009) by the comparison arm.
Thirty‐two trials implemented an aerobic exercise program and three trials implemented an anaerobic exercise program. Fourteen trials implemented a combined (aerobic and anaerobic) exercise program and an additional three trials had two exercise arms which implemented either an aerobic or anaerobic exercise program (Courneya 2007a; Haddad 2011; Segal 2009). The nature of the exercise program for four trials was unclear (Arbane 2009; Cadmus 2009; DiSipio 2009; Lanctot 2010).
Length of the exercise intervention varied greatly between trials with a range from three weeks (Chang 2008; Cheville 2010) to 26 weeks (Segal 2001) or six months (Cadmus 2009), with a modal exercise intervention period of 12 weeks (n = 14 trials). For 11 trials length of the exercise intervention varied with duration of the treatment with radiation, chemotherapy, or a combination (Courneya 2007a; de Oliveira 2010; Dimeo 1999; Griffith 2009; Jarden 2009; Mock 1994; Mock 2001; Mock 2005; Raghavendra 2007; Windsor 2004; Wiskemann 2011). The majority of trials (n = 33) had no follow‐up period between the end of the exercise intervention and the postexercise assessment. Among the 22 trials with a follow‐up period, this period ranged from one to two weeks postintervention (Courneya 2008; Moros 2010) to 12 months postintervention (Culos‐Reed 2010), with a modal length of six months from the end of the intervention (n = 10). Length of the follow‐up for one trial was unclear (DiSipio 2009).
The intensity of the exercise varied substantially between trials, as did the methods used to measure and monitor intensity. Methods used to measure intensity of the exercise included relatively objective measures such as percentage of the maximum HR, percentage of maximum oxygen consumption, HR, and ratings of perceived exertion, and perceived effort to reach a value on the Borg scale (Adamsen 2009; Battaglini 2008; Bourke 2011; Cadmus 2009; Campbell 2005; Chang 2008; Courneya 2003a; Courneya 2007a; Courneya 2008; Courneya 2009; Crowley 2003; Dimeo 1999; Galvao 2010; Griffith 2009; Hwang 2008; Jarden 2009; Mock 2005; Moros 2010; Mutrie 2007; Segal 2001; Segal 2003; Segal 2009; Tang 2010; Windsor 2004; Wiskemann 2011). Sixteen trials used a relatively subjective assessment of intensity by documenting a rating of mild, low‐ to moderate, mild‐ to moderate, moderate, or somewhat hard (Caldwell 2009; Chandwani 2010; Cohen 2004; Culos‐Reed 2010; Danhauer 2009; Donnelly 2011; Hacker 2011; Headley 2004; Moadel 2007; Mustian 2009; Oh 2008; Oh 2010; Rogers 2009; Targ 2002; Wang 2010; Yang 2011). Fifteen trials did not report intensity of the exercise program.
The frequency and duration of individual exercise sessions, and the total number of exercise sessions varied greatly across the trials. Frequency of the exercise program ranged between once per week and daily. Duration of exercise sessions ranged from 12 to 120 minutes, with a modal duration of 90 minutes (n = 6; and 3 additional trials provided duration as a range between 30 and 90 minutes or 60 and 90 minutes). In some trials the frequency of the exercise program and duration of each exercise session increased during the course of the trial. The total number of exercise sessions varied greatly, ranging from a low of 7 sessions (Cohen 2004) to a high of more than 275 sessions (Bourke 2011; Culos‐Reed 2010).
The exercise program was implemented at a facility or the participant's home or at both locations, and the location of implementation determined in the most part the format (individual or group) of the exercise program and whether it was professionally led or not. Eighteen trials implemented the exercise program in a facility such as a university or hospital facility, community center, or yoga studio (Adamsen 2009; Battaglini 2008; Brown 2006; Campbell 2005; Chang 2008; Courneya 2007a; Courneya 2008; Courneya 2009; Danhauer 2009; de Oliveira 2010; Dimeo 1999; Galvao 2010; Jarden 2009; Monga 2007; Moros 2010; Segal 2003; Segal 2009; Targ 2002), 18 trials implemented the exercise program at both a facility and the participant's home (Banerjee 2007; Bourke 2011; Chandwani 2010; Cheville 2010; Cohen 2004; Culos‐Reed 2010; Hacker 2011; Lanctot 2010; Moadel 2007; Mustian 2009; Mutrie 2007; Oh 2008; Oh 2010; Raghavendra 2007; Rogers 2009; Segal 2001; Vadiraja 2009b; Wiskemann 2011), and 16 trials implemented the exercise program only at the participant's home (Cadmus 2009; Caldwell 2009; Courneya 2003a; Crowley 2003; Donnelly 2011; Gomes 2011; Griffith 2009; Headley 2004; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Tang 2010; Wang 2010; Windsor 2004; Yang 2011), and four trials either did not report the location of implementation of the exercise program (DiSipio 2009; Hwang 2008) or the description of the location was not clear (Arbane 2009; Haddad 2011). In terms of the format of implementing the exercise program, 32 trials used an individual format (Bourke 2011; Cadmus 2009; Caldwell 2009; Chang 2008; Courneya 2003a; Courneya 2007a; Courneya 2008; Crowley 2003; de Oliveira 2010; Dimeo 1999; Donnelly 2011; Gomes 2011; Griffith 2009; Hacker 2011; Headley 2004; Jarden 2009; Mock 1994; Mock 1997; Mock 2001; Mock 2005; Moros 2010; Mustian 2009; Raghavendra 2007; Segal 2001; Segal 2003; Segal 2009; Tang 2010; Vadiraja 2009b; Wang 2010; Windsor 2004; Wiskemann 2011; Yang 2011), 12 trials used a group format (Adamsen 2009; Banerjee 2007; Battaglini 2008; Brown 2006; Campbell 2005; Cheville 2010; Courneya 2009; Danhauer 2009; Galvao 2010; Moadel 2007; Rogers 2009; Targ 2002), six trials used both an individual and group format (Chandwani 2010; Cohen 2004; Culos‐Reed 2010; Mutrie 2007; Oh 2008; Oh 2010), and for six trials the format was either not reported (DiSipio 2009; Haddad 2011; Hwang 2008; Lanctot 2010) or not clearly described (Arbane 2009; Monga 2007). The majority of exercise programs (n = 37) were either supervised or professionally led by yoga instructors, sports trainers, exercise physiologists, or other professionals.
For detailed information on interventions see Characteristics of included studies table.
Outcome measures
See Table 2 for a summary of instruments, the HRQoL domains assessed, and trials using each scale.
1. HRQoL instruments used by investigators.
Instrumentname | Abbreviation | Overall domain or subscale | Direction of response | Trials using this scale |
Health‐related quality of life | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | HRQoL | Higher score indicates better status | Adamsen 2009; Arbane 2009; Culos‐Reed 2010; Gomes 2011; Hacker 2011; Jarden 2009; Moros 2010; Wiskemann 2011 |
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐RB23 | QLQ‐B23 | HRQoL | Higher score indicates better status | Gomes 2011 |
Functional Assessment of Cancer Therapy ‐ Anemia | FACT‐An | HRQoL | Higher score indicates better status | Courneya 2007a; Courneya 2008; Courneya 2009; Jarden 2009 |
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | HRQoL | Higher score indicates better status | Campbell 2005; Courneya 2003a; Danhauer 2009; de Oliveira 2010; DiSipio 2009; Rogers 2009; Segal 2001 |
Functional Assessment of Cancer Therapy ‐ General | FACT‐G | HRQoL | Higher score indicates better status | Bourke 2011; Cadmus 2009; Campbell 2005; Courneya 2003a; de Oliveira 2010; Donnelly 2011; Jarden 2009; Moadel 2007; Mutrie 2007; Oh 2010; Rogers 2009; Segal 2001; Segal 2009; Wang 2010 |
Functional Assessment of Cancer Therapy ‐ Prostate | FACT‐P | HRQoL | Higher score indicates better status | Bourke 2011; Monga 2007; Segal 2003 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | HRQoL | Higher score indicates better status | Griffith 2009; Haddad 2011 |
Functional Assessment of Chronic Illness Therapy‐Fatigue | FACIT‐F | HRQoL | Higher score indicates better status | Headley 2004; Mustian 2009; Targ 2002 |
World Health Organization Quality of Life (mean score) | WHO QOL‐BREF | HRQoL | Higher score indicates better status | Hwang 2008 |
World Health Organization Quality of Life (single item) | WHO QOL‐BREF | HRQoL | Higher score indicates better status | Hwang 2008 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | HRQoL | Higher score indicates better status | Griffith 2009; Mock 2001 |
Ferrans and Powers Quality of Life Instrument | FPQLI | HRQoL | Higher score indicates better status | Hacker 2011 |
Functional Living Index for Cancer | FLIC | HRQoL | Higher score indicates better status | Raghavendra 2007 |
Spitzer QOL Uniscale | HRQoL | Higher score indicates better status | Cheville 2010 | |
Linear Analog Scales of Assessment | LASA | HRQoL | Higher score indicates better status | Cheville 2010 |
Quality of Life Systematic Inventory | HRQoL | Unclear | Lanctot 2010 | |
Condition‐specific HRQoL | ||||
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Additional breast cancer concerns | Higher score indicates better status | Cadmus 2009; Campbell 2005; Courneya 2003a; Courneya 2007a; Danhauer 2009; de Oliveira 2010; Mutrie 2007; Rogers 2009 |
Functional Assessment of Cancer Therapy | FACT | Lymphoma cancer concerns | Higher score indicates better status | Courneya 2009 |
Functional Assessment of Cancer Therapy ‐ Prostate | FACT‐P | Prostate cancer concerns | Higher score indicates better status | Monga 2007; Segal 2009 |
Functional Assessment of Chronic Illness Therapy‐Fatigue | FACIT‐F | General cancer concerns | Higher score indicates better status | Targ 2002 |
Expanded Prostate Cancer Index Composite | EPIC | Prostate cancer concerns | Higher score indicates worse status | Culos‐Reed 2010 |
Anxiety | ||||
Hospital Anxiety and Depression Scale | HADS | Anxiety | Higher score indicates worse status | Adamsen 2009; Banerjee 2007; Jarden 2009; Wiskemann 2011 |
State‐Trait Anxiety Scale | STAI | State anxiety | Higher score indicates worse status | Cadmus 2009; Chandwani 2010; Cohen 2004; Courneya 2003a; Courneya 2007a; Courneya 2009; Raghavendra 2007 |
Profile of Mood Scale | POMS | Tension‐anxiety | Higher score indicates worse status | Chang 2008; Moadel 2007; Oh 2010; Targ 2002 |
Symptom Checklist 90 Revised | SCL‐90‐R | Anxiety | Higher score indicates better status | Dimeo 1999 |
Symptom Checklist 90 Revised | SCL‐90‐R | Phobic anxiety | Higher score indicates better status | Dimeo 1999 |
General Health Questionnaire | GHQ | Anxiety | Higher score indicates worse status | Moros 2010 |
Symptom Assessment Scale | SAS | Anxiety | Higher score indicates worse status | Mock 1997 |
Body Image/self‐esteem | ||||
Tennessee Self‐Concept Scale | TSCS | Self‐concept | Higher score indicates better status | Mock 1994 |
Body Image Visual Analogue Scale | BIVAS | Body image | Higher score indicates better status | Mock 1994 |
Rosenberg Self‐Esteem | Self‐esteem | Higher score indicates better status | Cadmus 2009; Courneya 2007a | |
Symptom Assessment Scale | SAS | Body dissatisfaction | Higher score indicates worse status | Mock 1997 |
Cognitive function | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Cognitive functioning | Higher score indicates better status | Adamsen 2009; Hacker 2011; Jarden 2009; Moros 2010; Wiskemann 2011 |
Functional Assessment of Cancer Therapy‐Cognitive | FACT‐Cog | Cognitive functioning | Higher score indicates worse status | Oh 2010; Rogers 2009 |
Profile of Mood Scale | POMS | Confusion‐bewilderment | Higher score indicates worse status | Moadel 2007; Oh 2010; Targ 2002 |
Linear Analog Scales of Assessment | LASA | Cognitive | Higher score indicates better status | Cheville 2010 |
Attentional Functional Index | AFI | Cognitive functioning | Higher score indicates better status | Crowley 2003 |
Depression | ||||
Centers for Epidemiological Studies ‐ Depression Scale | CES‐D | Depression | Higher score indicates worse status | Cadmus 2009; Chandwani 2010; Cohen 2004; Courneya 2003a; Courneya 2007a; Courneya 2009; Culos‐Reed 2010; Danhauer 2009; Haddad 2011 |
Hospital Anxiety and Depression Scale | HADS | Depression | Higher score indicates worse status | Adamsen 2009; Banerjee 2007; Jarden 2009; Wiskemann 2011 |
Beck Depression Inventory‐II | BDI | Depression | Higher score indicates worse status | Donnelly 2011; Lanctot 2010; Monga 2007; Mutrie 2007; Raghavendra 2007 |
Profile of Mood Scale | POMS | Depression‐dejection | Higher score indicates worse status | Chang 2008; Dimeo 1999; Oh 2010; Targ 2002; Wiskemann 2011 |
Symptom Checklist 90 Revised | SCL‐90‐R | Depression | Higher score indicates better status | Dimeo 1999 |
General Health Questionnaire | GHQ | Depression | Higher score indicates worse status | Moros 2010 |
Symptom Assessment Scale | SAS | Depression | Higher score indicates worse status | Mock 1997 |
Emotional function/mental health | ||||
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Emotional well‐being | Higher score indicates better status | Danhauer 2009; de Oliveira 2010; Rogers 2009 |
Functional Assessment of Cancer Therapy ‐ General | FACT‐G | Emotional well‐being | Higher score indicates better status | Cadmus 2009; Moadel 2007; Monga 2007; Mutrie 2007; Oh 2010 |
Functional Assessment of Chronic Illness ‐ Fatigue | FACIT‐F | Emotional well‐being | Higher score indicates better status | Targ 2002 |
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Emotional functioning | Higher score indicates better status | Adamsen 2009; Hacker 2011; Jarden 2009; Moros 2010; Wiskemann 2011 |
Profile of Mood Scale | POMS | Mood | Higher score indicates worse status | Griffith 2009; Moadel 2007; Mock 2001; Oh 2010; Targ 2002; Yang 2011 |
Profile of Mood Scale | POMS | Anger‐hostility | Higher score indicates worse status | Dimeo 1999; Oh 2010; Targ 2002; Wiskemann 2011 |
Profile of Mood Scale | POMS | Irritability |
Higher score indicates worse status | Moadel 2007; Oh 2010 |
Fordyce Happiness Measure | FORDYCE | Happiness | Higher score indicates better status | Cadmus 2009 |
Happiness Measure | HM | Happiness | Higher score indicates better status | Courneya 2009 |
Medical Outcomes Study Short Form‐12 | MOS SF‐12 | Mental health component | Higher score indicates better status | Danhauer 2009 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Mental health component | Higher score indicates better status | Adamsen 2009; Cadmus 2009; Chandwani 2010; Galvao 2010; Tang 2010 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Mental health | Higher score indicates better status | Adamsen 2009; Chandwani 2010; Crowley 2003; Galvao 2010; Mock 2001; Segal 2001 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Role emotional | Higher score indicates better status | Cadmus 2009; Chandwani 2010; Crowley 2003; Galvao 2010; Mock 2001; Segal 2001 |
Positive and Negative Affect Scale | PANAS | Positivity | Higher score indicates better status | Danhauer 2009; Donnelly 2011; Mutrie 2007 |
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Psychological functioning | Higher score indicates better status | Danhauer 2009; Rogers 2009 |
Satisfaction with Life Scale | SWLS | Satisfaction | Higher score indicates better status | Campbell 2005; Courneya 2003a |
Psychosocial Adjustment to Illness Scale | PAIS | Psychosocial response to illness | Higher score indicates worse status | Mock 1994 |
WHO QOL‐BREF subscale | WHO QOL‐BREF | Psychological functioning | Higher score indicates better status | Hwang 2008 |
Perceived Stress Scale | PSS | Stress | Higher score indicates worse status | Banerjee 2007 |
Brief Symptom Inventory (subset of SCL‐90‐R) | BSI | Psychological distress | Higher score indicates better status | Mock 1994 |
National Comprehensive Cancer Network Distress Thermometer | NCCN | Distress | Higher score indicates worse status | Wiskemann 2011 |
Cohen's Perceived Stress Scale | Stress | Higher score indicates worse status | Cadmus 2009 | |
Linear Analog Scales of Assessment | LASA | Emotional | Higher score indicates better status | Cheville 2010 |
Symptom Distress Scale (modification of Symptom Checklist 90) | SDS | Stress | Higher score indicates worse status | Cheville 2010; Griffith 2009 |
Symptom Checklist 90 Revised | SCL‐90‐R | Psychological distress | Higher score indicates better status | Dimeo 1999 |
Symptom Checklist 90 Revised | SCL‐90‐R | Obsessive compulsive | Higher score indicates better status | Dimeo 1999 |
Symptom Checklist 90 Revised | SCL‐90‐R | Hostility | Higher score indicates better status | Dimeo 1999 |
Symptom Checklist 90 Revised | SCL‐90‐R | Somatization | Higher score indicates better status | Dimeo 1999 |
General Health Questionnaire | GHQ | Psychological status | Higher score indicates worse status | Moros 2010 |
General Health Questionnaire | GHQ | Somatization | Higher score indicates worse status | Moros 2010 |
Fatigue | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Fatigue | Higher score indicates worse status | Adamsen 2009; Hacker 2011; Jarden 2009; Wiskemann 2011 |
Functional Assessment of Cancer Therapy ‐ Anemia | FACT‐An | Fatigue | Higher score indicates better status | Courneya 2007a; Courneya 2008; Courneya 2009; Jarden 2009 |
Functional Assessment of Cancer Therapy | FACT | Fatigue | Higher score indicates worse status | Courneya 2003a |
Functional Assessment of Cancer Therapy ‐ Fatigue | FACT‐F | Fatigue | Higher score indicates worse status | Bourke 2011; Danhauer 2009; Mutrie 2007; Segal 2003; Segal 2009 |
Profile of Mood Scale | POMS | Fatigue‐inertia | Higher score indicates worse status | Brown 2006; Cheville 2010; Dimeo 1999; Oh 2010; Targ 2002; Wiskemann 2011 |
Profile of Mood Scale | POMS | Vigor‐activity | Higher score indicates better status | Brown 2006; Cheville 2010; Dimeo 1999; Oh 2010; Targ 2002; Wiskemann 2011 |
Linear Analog Self‐Assessment | LASA | Fatigue | Higher score indicates worse status | Brown 2006 |
Schwartz Cancer Fatigue Scale | SCFS | Fatigue | Higher score indicates worse status | Caldwell 2009 |
Multidimensional Fatigue Inventory | MFI | Fatigue | Higher score indicates worse status | Donnelly 2011; Wiskemann 2011 |
Piper Fatigue Scale | PFS | Fatigue | Higher score indicates worse status | Battaglini 2008; Campbell 2005; Crowley 2003; Griffith 2009; Mock 1997; Mock 2001; Mock 2005; Monga 2007 |
Functional Assessment of Chronic Illness Therapy ‐ Fatigue | FACIT‐F | Fatigue | Higher score indicates better status | Donnelly 2011; Headley 2004; Moadel 2007; Mustian 2009; Oh 2010; Wang 2010 |
Linear Analog Scales of Assessment | LASA | Fatigue | Higher score indicates better status | Cheville 2010 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Vitality | Higher score indicates better status | Adamsen 2009; Cadmus 2009; Chandwani 2010; Crowley 2003; Galvao 2010; Mock 2001; Segal 2001 |
Brief Fatigue Inventory | BFI | Fatigue | Higher score indicates worse status | Chandwani 2010; Chang 2008; Cohen 2004; Haddad 2011; Hwang 2008; Mustian 2009; Windsor 2004 |
Daily diary | Fatigue | Higher score indicates worse status | Mock 2001 | |
State‐Trait Anxiety Scale | STAI | Fatigue | Higher score indicates worse status | Brown 2006 |
Symptom Distress Scale (modification of Symptom Checklist 90) | SDS | Fatigue | Higher score indicates worse status | Brown 2006; Chang 2008 |
Attentional Functional Index | AFI | Attentional fatigue | Higher score indicates better status | Crowley 2003 |
Fatigue Severity Score | FSS | Fatigue | Higher score indicates worse status | Culos‐Reed 2010 |
Symptom Assessment Scale | SAS | Fatigue | Higher score indicates worse status | Mock 1997 |
Chalder Fatigue Questionnaire | Fatigue | Unclear | Gomes 2011 | |
General health perspective | ||||
Medical Outcomes Study Short Form‐12 | MOS SF‐12 | Item on health | Higher score indicates better status | Cadmus 2009; Chandwani 2010; Courneya 2009; Crowley 2003; Galvao 2010; Mock 2001; Segal 2001 |
Single question on health | Perceived health | Higher score indicates better status | Rogers 2009 | |
WHO QOL‐BREF single item | WHO QOL‐BREF | General health score | Higher score indicates better status | Hwang 2008 |
Ferrans and Powers Quality of Life Instrument | FPQLI | Health and functioning subscale | Higher score indicates better status | Hacker 2011 |
Pain | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Pain | Higher score indicates worse status | Adamsen 2009; Hacker 2011; Jarden 2009; Wiskemann 2011 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Bodily pain | Higher score indicates better status | Adamsen 2009; Cadmus 2009; Chandwani 2010; Crowley 2003; Galvao 2010; Griffith 2009; Mock 2001; Segal 2001 |
Visual Analog Scale | VAS | Pain | Higher score indicates worse status | Hwang 2008 |
Linear Analog Scales of Assessment | LASA | Pain frequency | Higher score indicates better status | Cheville 2010 |
Linear Analog Scales of Assessment | LASA | Pain severity | Higher score indicates better status | Cheville 2010 |
Physical well‐being | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Physical function | Higher score indicates better status | Adamsen 2009; Hacker 2011; Jarden 2009; Moros 2010; Wiskemann 2011 |
Functional Assessment of Cancer Therapy ‐ Anemia | FACT‐An TOI | Physical well‐being | Higher score indicates better status | Courneya 2009 |
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Physical well‐being | Higher score indicates better status | Campbell 2005; Courneya 2003a; Danhauer 2009; de Oliveira 2010; Rogers 2009 |
Functional Assessment of Cancer Therapy ‐ General | FACT‐G | Physical well‐being | Higher score indicates better status | Cadmus 2009; Moadel 2007; Monga 2007; Mutrie 2007; Oh 2010 |
Functional Assessment of Chronic Illness Fatigue | FACIT‐F | Physical well‐being | Higher score indicates better status | Targ 2002 |
Medical Outcomes Study Short Form‐12 | MOS SF‐12 | Physical function | Higher score indicates better status | Cadmus 2009; Chandwani 2010; Danhauer 2009; Mock 2001; Segal 2001 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Physical component | Higher score indicates better status | Adamsen 2009; Chandwani 2010; Galvao 2010; Tang 2010 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Role physical | Higher score indicates better status | Adamsen 2009; Cadmus 2009; Chandwani 2010; Galvao 2010; Griffith 2009; Mock 2001; Segal 2001 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Physical functioning | Higher score indicates better status | Adamsen 2009; Crowley 2003; Galvao 2010; Griffith 2009; Mock 2001; Mock 2005; Segal 2001 |
WHO QOL‐BREF subscale | WHO QOL‐BREF | Physical functioning | Higher score indicates better status | Hwang 2008 |
Linear Analog Scales of Assessment | LASA | Physical | Higher score indicates better status | Cheville 2010 |
Role function | ||||
Functional Assessment of Cancer Therapy ‐ Anemia | FACT‐An | Functional well‐being | Higher score indicates better status | Jarden 2009 |
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Functional well‐being | Higher score indicates better status | Campbell 2005; Courneya 2003a; Danhauer 2009; de Oliveira 2010; Rogers 2009 |
Functional Assessment of Cancer Therapy ‐ General | FACT‐G | Functional well‐being | Higher score indicates better status | Cadmus 2009; Moadel 2007; Monga 2007; Mutrie 2007; Oh 2010 |
Functional Assessment of Chronic Illness Fatigue | FACIT‐F | Functional well‐being | Higher score indicates better status | Targ 2002 |
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Functional well‐being | Higher score indicates better status | Adamsen 2009; Hacker 2011; Jarden 2009; Moros 2010; Wiskemann 2011 |
WHO QOL‐BREF subscale | WHO QOL‐BREF | Environmental functioning | higher score indicates better status | Hwang 2008 |
Ferrans and Powers Quality of Life Instrument | FPQLI | Family | Higher score indicates better status | Hacker 2011 |
Symptom Checklist 90 Revised | SCL‐90‐R | Interpersonal sensitivity | Higher score indicates better status | Dimeo 1999 |
Sleep | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Insomnia | Higher score indicates worse status | Hacker 2011; Jarden 2009; Wiskemann 2011 |
Pittsburgh Sleep Quality Index | PSQI | Sleep disturbance | Higher score indicates worse status | Chandwani 2010; Cohen 2004; Danhauer 2009; Donnelly 2011; Rogers 2009; Wang 2010 |
Taiwanese Pittsburgh Sleep Quality Index | PSQI | Sleep disturbance | Higher score indicates worse status | Tang 2010 |
Social functioning | ||||
European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 | QLQ‐C30 | Social functioning | Higher score indicates better status | Adamsen 2009; Hacker 2011; Jarden 2009; Moros 2010; Wiskemann 2011 |
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Social/family well‐being | Higher score indicates better status | Courneya 2003a; Danhauer 2009; de Oliveira 2010; Rogers 2009 |
Functional Assessment of Cancer Therapy ‐ General | FACT‐G | Social/family well‐being | Higher score indicates better status | Cadmus 2009; Moadel 2007; Monga 2007; Mutrie 2007; Oh 2010 |
Functional Assessment of Chronic Illness Therapy‐Fatigue | FACIT‐F | Social/family well‐being | Higher score indicates better status | Targ 2002 |
Medical Outcomes Study Short Form‐36 | MOS SF‐36 | Social/family well‐being | Higher score indicates better status | Adamsen 2009; Cadmus 2009; Chandwani 2010; Crowley 2003; Galvao 2010; Mock 2001; Segal 2001 |
WHO QoL‐BREF subscale | WHO QoL‐BREF | Social functioning | Higher score indicates better status | Hwang 2008 |
Ferrans and Powers Quality of Life Instrument | FPQLI | Social/economic | Higher score indicates better status | Hacker 2011 |
Linear Analog Scales of Assessment | LASA | Social well‐being | Higher score indicates better status | Cheville 2010 |
Linear Analog Scales of Assessment | LASA | Social support | Higher score indicates better status | Cheville 2010 |
General Health Questionnaire | GHQ | Social dysfunction | Higher score indicates worse status | Moros 2010 |
Spiritual function | ||||
Functional Assessment of Cancer Therapy ‐ Breast | FACT‐B | Spiritual | Higher score indicates better status | Courneya 2003a; Haddad 2011; Rogers 2009; Targ 2002 |
Functional Assessment of Chronic Illness Therapy‐Spirituality | FACIT‐SP | Peace | Higher score indicates better status | Cheville 2010; Danhauer 2009; Moadel 2007 |
Principles of Living Survey | PLS | Spiritual | Higher score indicates better status | Targ 2002 |
Ferrans and Powers Quality of Life Instrument | FPQLI | Psychological/spiritual | Higher score indicates better status | Hacker 2011 |
Linear Analog Scales of Assessment | LASA | Spiritual well‐being | Higher score indicates better status | Cheville 2010 |
HRQoL assessment included a wide range of measures including, for example, the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐C30 (EORTC QLQ), Functional Assessment of Cancer Therapy (FACT), and Medical Outcomes Study Short Form (MOS‐SF). In addition to measuring overall HRQoL, trials measured HRQoL domains including anxiety, body image/self‐esteem, cognitive function, depression, emotional function/mental health, fatigue, general health perspective, pain, physical well‐being (PWB), role function, sleep, social functioning, and spiritual function. Similar to the assessment of overall HRQoL, HRQoL domains were assessed using a plethora of measures. Table 2 provides a summary of instruments, the HRQoL domains assessed, and trials using each scale.
Twenty‐two trials measured only HRQoL outcomes (Adamsen 2009; Brown 2006; Cadmus 2009; Campbell 2005; Chandwani 2010; Cheville 2010; Cohen 2004; Courneya 2003a; Courneya 2007a; Courneya 2009; Danhauer 2009; Dimeo 1999; DiSipio 2009; Donnelly 2011; Gomes 2011; Haddad 2011; Headley 2004; Lanctot 2010; Moadel 2007; Mock 1994; Tang 2010; Targ 2002) and 34 trials measured both HRQoL and non‐HRQoL outcomes (Arbane 2009; Banerjee 2007; Battaglini 2008; Bourke 2011; Caldwell 2009; Chang 2008; Courneya 2008; Crowley 2003; Culos‐Reed 2010; de Oliveira 2010; Galvao 2010; Griffith 2009; Hacker 2011; Hwang 2008; Jarden 2009; Mock 1997; Mock 2001; Mock 2005; Monga 2007; Moros 2010; Mustian 2009; Mutrie 2007; Oh 2008; Oh 2010; Raghavendra 2007; Rogers 2009; Segal 2001; Segal 2003; Segal 2009; Vadiraja 2009b; Wang 2010; Windsor 2004; Wiskemann 2011; Yang 2011). The most frequently measured non‐HRQoL outcomes included physical function or activity (n = 15), strength training (n = 9), and fitness (n = 7). Other non‐HRQoL outcomes assessed included flexibility, exercise level, physiologic measures, anthropometric measures, functional capacity, ROM, micronutrient intake, caloric intake, biomarkers, nausea and vomiting, and treatment toxicity. Among the 34 trials that measured both HRQoL and non‐HRQoL outcomes, nine trials each identified HRQoL outcome(s) (Caldwell 2009; Courneya 2008; Mock 2005; Mutrie 2007; Oh 2008; Oh 2010; Segal 2003; Segal 2009; Wiskemann 2011) and non‐HRQoL outcome(s) (Battaglini 2008; Crowley 2003; Culos‐Reed 2010; de Oliveira 2010; Galvao 2010; Griffith 2009; Jarden 2009; Raghavendra 2007; Segal 2001) as primary outcome measure(s), and the remaining 16 trials did not identify any primary outcome measure(s) (Arbane 2009; Banerjee 2007; Bourke 2011; Chang 2008; Hacker 2011; Hwang 2008; Mock 1997; Mock 2001; Monga 2007; Moros 2010; Mustian 2009; Rogers 2009; Vadiraja 2009b; Wang 2010; Windsor 2004; Yang 2011).
For detailed information on outcome measures see the Characteristics of included studies table.
Excluded studies
The 102 trials retrieved and subsequently excluded did not meet the inclusion criteria for the following reasons: 26 trials included only participants who had completed active cancer treatment for either their primary or recurrent cancer and the exercise intervention was initiated after completion of active treatment (Banasik 2011; Bourke 2011a; Cho 2006; Daley 2004; Daley 2007; Daley 2007a; Daubenmier 2006; Dimeo 2004; Frattaroli 2008; Galantino 2003; Hayes 2011; Heim 2007; Heim 2011; Houborg 2006; Jones 2010; Kampshoff 2010; Knols 2011; Latka 2009; Mehnert 2011; Penttinen 2009; Persoon 2010; Pinto 2003; Pinto 2005; Sekse 2011; Thorsen 2005; Vardy 2010); 20 trials did not compare exercise with no exercise, another intervention, or usual care (Baumann 2011; Carmack Taylor 2004; Carmack Taylor 2006; Carmack Taylor 2007; Demark‐Wahnefried 2008; Haines 2010; Hartmann 2007; Henderson 2012; John 2007; Koller 2006; Korstjens 2008; Lau 2010; Le Vu 1997; Manassero 2007; McClure 2010; Mina 2010; Patel 2005; Roscoe 2005; Stephenson 2000; von Gruenigen 2009); 12 trials focused on complications owing to treatment (e.g. menopause, lymphedema, shoulder dysfunction) rather than on improving whole body function or HRQoL (Aaronson 2011; Beurskens 2007; Bloom 2011; Duijts 2009; Duijts 2009a; Duijts 2010; Duijts 2010a; Kilbreath 2006a; Lee 2007a; McKenzie 2003; Todd 2008; Xie 2010); four trials were not RCTs or CCTs (Aghili 2007; Baumann 2008; Cho 2004; Park 2006); four trials did not measure overall HRQoL or an HRQoL domain as a study outcome (Dimeo 1997; MacVicar 1989; Pickett 2002; Schwartz 2009); and one trial included participants below 18 years of age (Marchese 2004). The remaining 35 trials were excluded for meeting more than one of the reasons for exclusion. For detailed information on reasons for exclusion of retrieved studies see Characteristics of excluded studies table.
Risk of bias in included studies
The included studies were assessed for risk of bias using the 'Risk of Bias' assessment tool and recommendations for judging risk of bias provided in Chapter 8 of the Cochrane Handbook for Systematic Reviews of Interventions (Higgins 2011). For each trial the risk of bias is detailed in the 'Risk of bias' tables included with the Characteristics of included studies and the 'Risk of bias' summary (Figure 2). In addition, an overall assessment of risk of bias is presented in Figure 3.
Allocation
Thirty‐three trials were at a low risk of selection bias owing to adequate generation of the randomized sequence as the trials used a random component to generate their sequence. Two trials had a high risk of selection bias as they used a nonrandom component to generate their sequence (Dimeo 1999; Mock 1997). Twenty‐one trials were considered to have an unclear risk of selection bias, largely because the generation of the random sequence was not described (Arbane 2009; Battaglini 2008; Brown 2006; Campbell 2005; Chang 2008; Culos‐Reed 2010; Danhauer 2009; DiSipio 2009; Gomes 2011; Griffith 2009; Hacker 2011; Haddad 2011; Hwang 2008; Lanctot 2010; Moadel 2007; Mock 1994; Monga 2007; Moros 2010; Targ 2002; Wang 2010; Windsor 2004).
Eighteen trials were at a low risk of selection bias owing to adequate concealment of allocation to the intervention as the participants and investigators could not foresee assignment to the study groups. Two trials had a high risk of selection bias as the participants or investigators might foresee assignment to the study groups (Courneya 2003a; Mock 1997). Thirty‐six trials were considered to have an unclear risk of selection bias owing to allocation concealment, largely because the method of concealment either was not described or not described in detail to allow a definite judgment (Arbane 2009; Battaglini 2008; Brown 2006; Caldwell 2009; Campbell 2005; Chandwani 2010; Chang 2008; Cheville 2010; Culos‐Reed 2010; Danhauer 2009; de Oliveira 2010; Dimeo 1999; DiSipio 2009; Gomes 2011; Griffith 2009; Hacker 2011; Haddad 2011; Headley 2004; Hwang 2008; Jarden 2009; Lanctot 2010; Moadel 2007; Mock 1994; Mock 2001; Monga 2007; Moros 2010; Mustian 2009; Oh 2008; Oh 2010; Rogers 2009; Segal 2001; Tang 2010; Targ 2002; Wang 2010; Wiskemann 2011; Yang 2011).
Blinding
All trials included in this review were at high risk for performance bias because, owing to the nature of the intervention (exercise), it was not possible to blind the study personnel and participants.
With the exception of two trials that were considered to have unclear risk for detection bias (Mutrie 2007; Segal 2003), the remaining 54 trials were at high risk for detection bias.
Incomplete outcome data
Sixteen trials were at a low risk of attrition bias owing to the amount, nature, or handling of incomplete outcome data (Adamsen 2009; Cadmus 2009; Chandwani 2010; Courneya 2007a; Courneya 2008; Culos‐Reed 2010; Donnelly 2011; Galvao 2010; Jarden 2009; Mock 1994; Mustian 2009; Oh 2010; Segal 2001; Segal 2009; Tang 2010; Vadiraja 2009b) and nine trials were considered to have an unclear risk for attrition bias (Arbane 2009; Battaglini 2008; Cheville 2010; de Oliveira 2010; DiSipio 2009; Gomes 2011; Haddad 2011; Lanctot 2010; Wang 2010). Thirty‐one trials were at high risk for attrition bias.
Selective reporting
Forty‐seven trials were at a low risk of reporting bias as, based on the information provided by the trial authors, there was no reason to believe that there was selective reporting of the primary and secondary outcomes. Three trials were considered at high risk (Brown 2006; Cheville 2010; Mock 1994) and six trials were considered as unclear risk (Arbane 2009; Battaglini 2008; DiSipio 2009; Gomes 2011; Haddad 2011; Lanctot 2010) for reporting bias.
Other potential sources of bias
Fifty trials were at a low risk for other biases such as description of the sample, generalizability of findings, and sample size and six trials were considered to be at high risk for other biases (Adamsen 2009; Arbane 2009; Oh 2008; Raghavendra 2007; Wang 2010; Windsor 2004).
Effects of interventions
See: Table 1
Authors reported trial results either as change in score from baseline to follow‐up or follow‐up values. We completed meta‐analyses for both types of outcomes and for each follow‐up time period, categorizing follow‐up as: up to 12 weeks, more than 12 weeks to less than 6 months, 6 months, and more than 6 months. If authors reported results in another manner (e.g. to end of chemotherapy treatment) where the length of follow‐up differed for each trial participant, we classified the follow‐up time by the average follow‐up time, if reported. If not, we determined the mid‐point of the extremes for follow‐up and used that as an “average”. In cases where authors included more than one measurement within a time period (e.g. 6 week and 12 weeks) we included measures from the longer time point. Because the change in scores from baseline to follow‐up takes into account baseline variability, we preferentially pooled results for change scores. However, authors frequently only reported follow‐up values, and so we also pooled results of follow‐up values. We combined data using a WMD and a random‐effects model when trials measured HRQoL or HRQoL domains using either the same measurement method or scale to generate continuous data. We used a SMD analysis and random‐effects model to combine data from different instruments measuring the same domain. If we found heterogeneity in an analysis, we investigated subgroups by cancer type, intensity of the exercise intervention, or by inclusion of participants who had completed all therapy. All trials showed a relatively high risk of bias, so we conducted sensitivity analysis of trials where the allocation concealment scored as low risk of bias versus unclear or with a high risk of bias. We did not complete subgroup analyses when there was only one trial in a subgroup.
For detailed information on HRQoL and HRQoL domain outcomes, number of trials reporting the outcomes, number of participants on whom the outcomes were reported, statistical methods used for analysis, and effect estimates see the Data and analyses table.
Overall health‐related quality of life
Change in HRQoL from baseline following an exercise intervention showed a significant improvement compared with control in 806 study participants at 12 weeks (SMD 0.47; 95% CI 0.16 to 0.79), no difference at follow‐up between 12 weeks and 6 months in 442 participants (SMD 1.25; 95% CI ‐0.03 to 2.53), and no difference in 282 participants at 6 months' follow‐up (SMD 0.14; 95% CI ‐0.11 to 0.39) (Analysis 1.1). At 12 weeks' follow‐up, subgroups by cancer type resulted in breast cancer (SMD 0.40; 95% CI ‐0.11 to 0.92) not showing a significant effect of exercise in contrast to all other types of cancer (SMD 0.55; 95% CI 0.19 to 0.92). At follow‐up time of more than 12 weeks to less than 6 months, we observed no significant effect by cancer type (breast cancer, SMD 0.25; 95% CI ‐0.01 to 0.50) versus all other types of cancer (SMD 2.95; 95% CI ‐2.21 to 8.12). At 12 weeks' follow‐up, trials in which the investigators described the exercise as moderate or vigorous showed a positive effect (SMD 0.51; 95% CI 0.13 to 0.89) compared with those described as mild (SMD 0.45; 95% CI ‐0.30 to 1.19); this effect was also observed at follow‐up from 12 weeks to 6 months (SMD 1.57; 95% CI 0.01 to 3.12), but not at 6 months' follow‐up. The effect of exercise was still significant when we excluded trials that included participants who had completed treatment at 12 weeks' follow‐up (SMD 0.52; 95% CI 0.16 to 0.88) but not at longer follow‐up time periods.
All trials showed a relatively high risk of bias, so we conducted a sensitivity analysis of trials where the allocation concealment scored as low risk of bias versus unclear or with a high risk of bias. We found that the effect of exercise on the change from baseline to 12 weeks' follow‐up resulted in a nonsignificant effect at 12 weeks (SMD 0.33; 95% CI ‐0.02 to 0.68) when we included only trials scoring as low risk of bias for allocation concealment.
Because there was significant clinical and statistical heterogeneity when combining all trials in an SMD model, we also examined the treatment effect by individual HRQoL instrument. The most commonly used instruments included those in the FACT series; including FACT‐An (anemia), FACT‐B (breast), FACT‐G (general), FACT‐P (prostate), and Functional Assessment of Chronic Illness Therapy (FACIT); and the QLQ‐C30. A significant change in the HRQoL score from baseline to 12 weeks compared with change in the control group was seen at 12 weeks' follow‐up with the FACT‐G (MD 5.70; 95% CI 2.30 to 9.09) and FACT‐P (MD 8.55; 95% CI 0.45 to 16.65), but not the FACT‐An (MD ‐6.90; 95% CI ‐21.73 to 7.93), FACT‐B (MD 6.81; 95% CI ‐5.81 to 19.43), FACIT (MD 1.55; 95% CI ‐6.37 to 9.48), or QLQ‐C30 (MD ‐5.14; 95% CI ‐15.97 to 5.69). Additional instruments were used in only a single trial or only a few trials. Similar results were seen at longer follow‐up periods.
We found similar results when we looked at the follow‐up values reported rather than the differences between baseline and follow‐up (Analysis 1.2). Again, we found a significant effect at 12 weeks (SMD 0.33; 95% CI 0.12 to 0.55), and follow‐up at more than 12 weeks to less than 6 months (SMD 0.25; 95% CI 0.07 to 0.43), but not at 6 months (SMD 0.13; 95% CI ‐0.09 to 0.35). Subgroup analyses at 12 weeks' follow‐up did not show a significant effect for breast cancer (SMD 0.31; 95% CI ‐0.03 to 0.65), but did for other types of cancer (SMD 0.34; 95% CI 0.15 to 0.53). Including only studies in which authors reported that the exercise was moderate to vigorous did not show a significant effect (SMD 0.16; 95% CI ‐0.07 to 0.40). Limiting the analyses to trials with a low risk of bias for allocation concealment continued to show a significant effect of exercise at 12 weeks (SMD 0.29; 95% CI 0.03 to 0.55).
Looking at the treatment effect by the individual instrument administered, we found significant effects with FACT‐G (MD 6.89; 95% CI 0.44 to 13.35), FACT‐P (MD 7.36; 95% CI ‐1.59 to 16.31), and QLQ‐C30 (MD 7.31; 95% CI 1.99 to 12.63), but not with the FACT‐An (MD 4.50; 95% CI ‐4.31 to 13.32), FACT‐B (MD 0.73; 95% CI ‐8.23 to 9.69), or FACIT (MD 13.30; 95% CI ‐3.16 to 29.76). Again, few trials contributed to each analysis and there were insufficient trials to complete subgroup analyses or look at longer times of follow‐up.
Trials for which we were unable to extract data and that measured HRQoL included Brown 2006, DiSipio 2009, Gomes 2011, Headley 2004, and Oh 2008. All but one trial reported a higher HRQoL in the exercise group compared with the control group, although this difference was typically manifested as less of a decrease in HRQoL during active treatment (Brown 2006; DiSipio 2009; Gomes 2011; Headley 2004).
Cancer‐specific health‐related quality of life
Although we observed a significant effect of exercise compared to control in change in scores from baseline to 12 weeks' follow‐up for prostate cancer concerns (SMD 0.41; 95% CI 0.15 to 0.67), we did not observe a significant improvement at longer follow‐up times for either breast cancer or prostate cancer concerns (Analysis 2.1). Similar findings were obtained when we examined differences in follow‐up scores rather than the difference between baseline and follow‐up, with a single significant observation at 6 months for breast cancer (MD 1.45; 95% CI 0.08 to 2.81).
Anxiety
We did not observe a significant reduction in change scores in instruments assessing anxiety in the group exposed to exercise compared with the control group at 12 weeks (SMD ‐0.17; 95% CI ‐0.41 to 0.06) or at longer time periods such as more than 12 weeks to less than 6 months (SMD ‐0.16; 95% CI ‐0.44 to 0.12), and at 6 months' follow‐up (SMD ‐0.18; 95% CI ‐0.49 to 0.12) (Analysis 3.1). There were insufficient trials to examine subgroups within the comparison of change scores.
A larger number of authors reported follow‐up values rather than looking at the change from baseline to follow‐up, and we observed a significant effect of exercise on anxiety when we looked at the difference in follow‐up scores after 12 weeks (SMD ‐0.46; 95% CI ‐0.81 to ‐0.11) or 6 months' follow‐up (SMD ‐0.44; 95% CI ‐0.71 to ‐0.17), but not when follow‐up was between 12 weeks and 6 months (SMD ‐0.20; 95% CI ‐0.57 to 0.17). There was statistical heterogeneity across studies, however, and examining subgroups, we found a significant effect at follow‐up for breast cancer at all time points (12 weeks: SMD ‐0.90; 95% CI ‐1.68 to ‐0.11; more than 12 weeks to less than 6 months: SMD ‐0.27; 95% CI ‐0.52 to ‐0.02; 6 months: SMD ‐0.40; 95% CI ‐0.70 to ‐0.10), but not for other types of cancer. When we compared subgroup by the intensity of the exercise intervention, we found a modest effect of exercise reported as moderate to vigorous on anxiety at 12 weeks (SMD ‐0.18; 95% CI ‐0.32 to ‐0.03) but not at longer times of follow‐up. Examining the effect of exercise compared with control on anxiety in trials with a low risk of bias for allocation concealment resulted in these results becoming significant at all time points (12 weeks: SMD ‐0.72; 95% CI ‐1.41 to ‐0.03; more than 12 weeks to less than 6 months: SMD ‐0.27; 95% CI ‐0.52 to ‐0.02; 6 months: SMD ‐0.40; 95% CI ‐0.70 to ‐0.10).
Examination by individual instruments assessing anxiety showed a significant effect at six months' follow‐up only when the anxiety subscale of the Hospital Anxiety and Depression Scale (HADS; MD ‐2.50; 95% CI ‐4.89 to ‐0.11) or the State‐Trait Anxiety Scale (STAI) (MD ‐2.12; 95% CI ‐3.44 to ‐0.81) were used to assess anxiety at six months' follow‐up, but not shorter times of follow‐up.
In addition to these results, a single trial (Mock 1997) reported a significant difference between exercise and control groups at 6 weeks on anxiety assessed using the Symptom Assessment Scale.
Body image
No significant effect of exercise was observed on body image when comparing an exercise with a control intervention and looking at differences in scores except for a single trial of 223 breast cancer participants that reported change at approximately 3 months in the Rosenberg Self‐esteem Instrument (MD 1.30; 95% CI 0.51 to 2.09) (Analysis 4.1). This significant effect was not maintained through six months in this trial and no other significant differences were observed in body image or self‐esteem.
Mock 1997 also assessed dissatisfaction with body using the Symptom Assessment Scale and reported a significant difference between scores at 6 weeks as reported by the exercise and control groups.
Cognitive function
We observed no significant effect of exercise on any measure of cognitive function, except for a modest effect when looking at the follow‐up scores in cognitive functioning at 12 weeks (SMD ‐0.16; 95% CI ‐0.31 to ‐0.01) (Analysis 5.1). When we examined this effect by subgroup, the effect was not significant by type of cancer (breast (SMD ‐0.22; 95% CI ‐0.47 to 0.02) or other (SMD ‐0.15; 95% CI ‐0.45 to 0.14)) or by level of exercise intensity (moderate to intense (SMD ‐0.20; 95% CI ‐0.41 to 0.02)).
One trial whose data were not extracted reported a significant effect on cognitive function with exercise without a corresponding effect in the control group (Oh 2008).
Depression
We observed no significant effect of exercise on depression in 418 participants looking at the change in score across instruments from baseline to follow‐up (Analysis 6.1). Because there was heterogeneity, we examined results by subgroup including cancer type (breast versus other) and observed a significant effect for other types of cancer (SMD ‐0.45; 95% CI ‐0.70 to ‐0.20) but not in the single trial that looked at breast cancer (Targ 2002). No differences were noted when we looked at trials by reported intensity of exercise (vigorous to moderate versus mild to moderate), but we did see a significant effect of exercise after excluding two trials that included patients who had completed therapy (Oh 2010; Targ 2002) (SMD ‐0.55; 95% CI ‐0.87 to ‐0.22).
When we looked at follow‐up values (Analysis 6.2), we observed a significant effect of the exercise intervention at 12 weeks (SMD ‐0.55; 95% CI ‐0.87 to ‐0.22) and 6 months' follow‐up (SMD ‐0.29; 95% CI ‐0.48 to ‐0.09), but not at follow‐up between these two time points (SMD ‐0.21; 95% CI ‐0.43 to 0.01). This effect was still significant at both 12 weeks (SMD ‐0.67; 95% CI ‐1.13 to ‐0.22) and 6 months (SMD ‐0.26; 95% CI ‐0.51 to ‐0.01) after excluding trials that included individuals who had completed treatment. Subgroup analysis by cancer type continued to be significant at both 12 weeks (SMD ‐0.98; 95% CI ‐1.64 to ‐0.32) and 6 months' follow‐up (SMD ‐0.27; 95% CI ‐0.47 to ‐0.07) for trials of breast cancer, as it was for other types of cancer for 12 weeks' follow‐up (SMD ‐0.28; 95% CI ‐0.44 to ‐0.11) and more than 12 weeks but less than 6 months (SMD ‐0.58; 95% CI ‐1.10 to ‐0.06). There was only a single trial of cancer other than breast at six months' follow‐up and it did not show a significant effect of exercise on depression (Jarden 2009). There was improvement in depression when the exercise intervention was noted to be moderate to vigorous at 12 weeks' follow‐up (SMD ‐0.26; 95% CI ‐0.39 to ‐0.13), but not when it was reported to be mild (SMD ‐0.31; 95% CI ‐0.91 to 0.28), although this latter subgroup included only two trials (Chandwani 2010; Danhauer 2009). When we performed a sensitivity analysis including only trials with a low risk of bias for allocation concealment, there was a significant effect of exercise on depression at 12 weeks' follow‐up (SMD ‐0.76; 95% CI ‐1.24 to ‐0.28) and at 6 months' follow‐up (SMD ‐0.27; 95% CI ‐0.47 to ‐0.07), but not when follow‐up was more than 12 weeks to less than 6 months (SMD ‐0.08; 95% CI ‐0.32 to 0.17).
We also looked at the effect of the exercise intervention by individual instrument, and observed a significant treatment effect looking at change at 12 weeks in the Centers for Epidemiological Studies ‐ Depression Scale (CES‐D; MD ‐2.40; 95% CI ‐4.05 to ‐0.75) and follow‐up values in the Beck Depression Inventory at 12 weeks (MD ‐3.36; 95% CI ‐5.87 to ‐0.85) and at 6 months' follow‐up (MD ‐2.40; 95% CI ‐4.57 to ‐0.23).
We were unable to extract data from two trials that reported on depression, with one trial reporting a significant difference in depression between treatment groups (Mock 1997) and the second showing no difference (Haddad 2011).
Emotional well‐being
Meta‐analyses of the change in score from baseline to follow‐up and comparing exercise with control intervention did not show a significant improvement in EWB at any follow‐up time point (Analysis 7.1). When we looked at the effect of exercise by type of cancer or by excluding studies that included participants who had completed treatment, we found no significant effect of exercise on change in emotional status. Similarly, there was no significant difference when we looked at subgroups by reported exercise intensity.
By comparing the differences in follow‐up values, we observed a significant effect of exercise compared with control at follow‐up of more than 12 weeks but less than 6 months (SMD 0.59; 95% CI 0.12 to 1.07) but not at either 12 weeks (SMD 0.05; 95% CI ‐0.18 to 0.28) or 6 months' follow‐up (SMD 0.25; 95% CI ‐0.08 to 0.57). However, when we looked at trials by type of cancer, we found a significant effect for types of cancer other than breast cancer (between 12 weeks' and 6 months' follow‐up: SMD 0.86; 95% CI 0.28 to 1.44; 6 months' follow‐up: SMD 1.16; 95% CI 0.36 to 1.95), but no effect for breast cancer trials. Including only trials where all trial participants were undergoing active treatment resulted in a nonsignificant effect of exercise on emotional state at all follow‐up times. A sensitivity analysis including only trials with a low risk of bias for allocation concealment also did not show a significant effect at 12 weeks' follow‐up (SMD ‐0.31; 95% CI ‐0.86 to 0.25).
Looking at each type of instrument separately, we found a significant difference between the exercise and the control interventions in QLQ‐C30 follow‐up values at longer follow‐up periods (more than 12 weeks to less than 6 months: MD 13.33; 95% CI 5.19 to 21.47; 6 months: MD 19.10; 95% CI 6.39 to 31.81), change in the Profile of Mood Scale (POMS) total mood disturbance score from baseline to 12 weeks' follow‐up (MD ‐8.92; 95% CI ‐10.81 to ‐7.03), follow‐up scores in the POMS total mood (MD ‐7.16; 95% CI ‐12.64 to ‐1.69), and the positivity subscale of the Positive and Negative Affect Scale (PANAS) at 6 months' follow‐up (MD 3.80; 95% CI 0.98 to 6.62). We did see significant results in some additional individual instruments (Brief Symptom Inventory, Symptom Checklist (SCL), National Comprehensive Cancer Network Distress Scale, M.D. Anderson Symptom Inventory (MDASI) subscales), but these included only a single trial in each case.
Two trials without extractable data reported no change over time in EWB in either the exercise or control group (Headley 2004; Oh 2008).
Fatigue
We observed a significant effect of exercise on change in fatigue at follow‐up of 12 weeks (SMD ‐0.73; 95% CI ‐1.14 to ‐0.31), although this effect was not present at follow‐up between 12 weeks and 6 months (SMD ‐0.11; 95% CI ‐0.37 to 0.14) (Analysis 8.1). Although we observed no treatment difference within a subgroup of breast cancer trial participants, we found that a positive effect of exercise was present in participants with other types of cancer at 12 weeks (SMD ‐0.72; 95% CI ‐1.23 to ‐0.20). A subgroup analysis looking at trials where the exercise intervention was reported as moderate to vigorous provided an effect at 12 weeks' follow‐up (SMD ‐0.93; 95% CI ‐1.60 to ‐0.26) but not at longer time periods. Only two trials reported that the exercise was mild (Oh 2010; Targ 2002) and in these two trials the exercise intervention showed a significant effect compared with control on change in fatigue at 12 weeks (SMD ‐0.82; 95% CI ‐1.16 to ‐0.48). The effect of exercise remained significant when we excluded trials with participants who had completed treatment (SMD ‐0.78; 95% CI ‐1.29 to ‐0.27). A sensitivity analysis including only trials with a low risk of bias for allocation concealment resulted in a nonsignificant effect of exercise on fatigue compared with control at all time points.
We continued to observe a positive effect of exercise on fatigue compared with a control intervention when we completed meta‐analyses looking at differences in follow‐up scores at all follow‐up time points (12 weeks' follow‐up: SMD ‐0.38; 95% CI ‐0.57 to ‐0.18; more than 12 weeks to less than 6 months' follow‐up: SMD ‐0.19; 95% CI ‐0.33 to ‐0.05; 6 months' follow‐up: SMD ‐0.18; 95% CI ‐0.35 to ‐0.00) (Analysis 8.2). This effect was present in trial participants with breast cancer at 12 weeks (SMD ‐0.32; 95% CI ‐0.57 to ‐0.07), but not at longer time points. We continued to find a significant effect at all three follow‐up time points for trials that enrolled participants with other types of cancer (12 weeks' follow‐up; SMD ‐0.43; 95% CI ‐0.75 to ‐0.12; more than 12 weeks' to less than 6 months' follow‐up: SMD ‐0.25; 95% CI ‐0.45 to ‐0.04; 6 months' follow‐up: SMD ‐0.49; 95% CI ‐0.93 to ‐0.05). We also continued to see a significant effect of exercise compared with a control intervention after excluding trials that included participants who had completed treatment. Including only trials with a low risk of bias for allocation concealment showed a positive effect of exercise at 12 weeks (SMD ‐0.35; 95% CI ‐0.67 to ‐0.03), but not at longer follow‐up times.
Comparing results by individual instruments showed mixed effects in that analyses for some instruments showed a significant effect of exercise at some follow‐up times, while others did not. We observed a significant improvement in fatigue from baseline to follow‐up when we combined trials at 12 weeks for the FACT‐F subscale and the Piper Fatigue Scale (PFS). We observed a significant effect of exercise on differences between follow‐up scores at 12 weeks when pooling results from trials using the FACT fatigue subscale, FACIT, the POMS fatigue scale or vitality subscales, the PFS, the MOS SF‐36 vitality subscale, and the Multidimensional Fatigue Inventory (MFI) at various times of follow‐up.
We were unable to extract data from a number of trials reporting on the differences in fatigue between exercise and control groups. Four of these trials reported a significant difference between the exercise and control groups (Brown 2006; Gomes 2011; Haddad 2011; Mock 1997) and two reported no difference (Headley 2004; Oh 2008).
General health perspective
We only observed a single significant effect of exercise on general health perspective by looking at the difference in follow‐up scores at 12 weeks (SMD 0.33; 95% CI 0.01 to 0.64) (Analysis 9.1). Neither change from baseline to follow‐up nor any other measure of difference in scores at any time point or for any single instrument showed an effect of exercise on general health perspective.
A single trial without extractable data reported a significant difference in general health as measured by the MOS SF‐36 between a yoga exercise group with either a waiting list control or stretching control group (Haddad 2011).
Pain
Few trials reported on pain or change in pain related to the exercise intervention. No significant effect was obtained when pooling trials that reported change in pain from baseline to follow‐up (Analysis 10.1). We did not observe a significant effect when looking at follow‐up scores either, although a single trial reported a significant reduction in pain at six months (Jarden 2009). When we looked at the comparison of exercise with control on pain by individual instrument, although we sometimes observed a significant effect, but only when a single trial was included in the analysis.
One small trial for which we could not extract data also reported on pain (Oh 2008), finding a significant difference between the exercise and control groups.
Physical functioning
A significant effect of an exercise intervention on physical function appeared relatively consistently at 12 weeks across most measures (Analysis 11.1). We observed a significant difference from baseline to 12 weeks' follow‐up (SMD 0.69; 95% CI 0.16 to 1.22) and at 6 months follow‐up (SMD 0.28; 95% CI ‐0.00 to 0.55) but not when follow‐up was between 12 weeks and 6 months (SMD ‐0.18; 95% CI ‐0.53 to 0.17) (Analysis 11.1). Trials that included only breast cancer participants did not show a significant effect of exercise on physical functioning (SMD 0.96; 95% CI ‐0.26 to 2.17) at 12 weeks; neither did trials that only included other types of cancer (SMD 0.46; 95% CI ‐0.04 to 0.97) or trials where the author reported moderate to vigorous‐intensity exercise (SMD 0.96; 95% CI ‐0.26 to 2.17). However, a significant effect at 12 weeks was observed when we only looked at trials that had all participants undergoing active treatment (i.e. when we excluded trials that included participants who had completed treatment) (SMD 1.00; 95% CI 0.26 to 1.74).
A similar pattern emerged when we looked at difference in follow‐up scores, with significant effects seen at 12 weeks (SMD 0.28; 95% CI 0.11 to 0.45), and 6 months' follow‐up (SMD 0.29; 95% CI 0.07 to 0.50), but not at follow‐up of more than 12 weeks to less than 6 months (SMD 0.33; 95% CI ‐0.17 to 0.82) (Analysis 11.2). Subgroup analyses by type of cancer showed no effect at 12 weeks for trials of breast cancer participants, but a significant effect for trials examining participants with other types of cancer (SMD 0.37; 95% CI 0.19 to 0.55), as did including only trials that did not include any participants who had completed treatment (SMD 0.38; 95% CI 0.17 to 0.58). Looking at trials that reported moderate to vigorous intensity of exercise also showed a significant effect of exercise at 12 weeks' follow‐up (SMD 0.41; 95% CI 0.17 to 0.64). A sensitivity analysis that included only trials at a low risk of bias for allocation concealment also showed a positive effect at 12 weeks (SMD 0.24; 95% CI 0.07 to 0.40). We could not perform sensitivity analyses for longer times of follow‐up because there were too few trials at a low risk of bias for allocation concealment.
Looking at individual instruments, a significant effect of exercise compared with control was observed in change from baseline to 12 weeks' follow‐up in the FACT physical well‐being subscale (MD 2.31; 95% CI 0.65 to 3.98). Difference in scores at follow‐up was observed at 6 months in the FACT physical well‐being subscale (6 months: MD 1.17; 95% CI 0.14 to 2.19); the QLQ‐C30 physical functioning subscale (12 weeks' follow‐up: MD 3.72; 95% CI 0.61 to 6.84; more than 12 weeks' to less than 6 months' follow‐up: MD 3.72; 95% CI 0.61 to 6.84); and the MOS‐SF 36 physical component scale (PCS) (12 weeks' follow‐up: MD 3.96; 95% CI 0.99 to 6.94), physical functioning subscale (12 weeks' follow‐up: MD 4.04; 95% CI 0.63 to 7.46), and physical role subscale (12 weeks' follow‐up: MD 11.24; 95% CI 3.10 to 19.39). In addition, single trials reported a significant effect on physical functioning using a variety of other instruments, including the WHO QOL BREF, MDASI, and the Quality of Life Symptom Inventory.
There were four trials whose investigators measured physical functioning in trial participants assigned to exercise and control groups. Of these, three found a significant difference between treatment groups (Haddad 2011; Mock 1997; Oh 2008) and one reported no difference (Headley 2004).
Role function
Results for role function showed a significant effect of exercise on role function compared with control when we pooled results for change from baseline to follow‐up at 12 weeks (SMD 0.48; 95% CI 0.07 to 0.90) or differences in follow‐up scores at 12 weeks (SMD 0.17; 95% CI 0.00 to 0.34) and 6 months (SMD 0.32; 95% CI 0.03 to 0.61), but not at other time points (Analysis 12.1). Subgroup analyses of the change from baseline to follow‐up at 12 weeks in role function showed a significant effect for trials examining types of cancer other than breast (SMD 0.58; 95% CI 0.04 to 1.12), and when excluding trials that included participants who had completed treatment (SMD 0.75; 95% CI 0.14 to 1.36), but not when the investigators reported that the exercise was moderate to vigorous in intensity (SMD 0.61; 95% CI ‐0.40 to 1.62). In contrast, there was no significant effect for any subgroup when observing differences in follow‐up scores of the exercise compared with the control groups at 12 weeks. Results using individual instruments infrequently showed significant effects, including only the FACT functional well‐being (FWB) subscale at 12 weeks' and 6 months' follow‐up, the QLQ‐C30 role function at 6 months, and three different subscales on the MDASI.
Role function was reported by two trial investigators who found no change in role function in either the exercise or control group (Headley 2004; Oh 2008).
Sleep disturbance
We observed no significant effect of exercise on any reported measure of sleep problems when we looked at the change from baseline to follow‐up scores, but did see a significant effect showing improvement when comparing follow‐up values by comparison group at 12 weeks (SMD ‐0.40; 95% CI ‐0.67 to ‐0.14), but not at longer follow‐up time points (Analysis 13.1). We observed a significant effect when the analyses included only trials with participants who had cancers other than breast cancer (SMD ‐0.43; 95% CI ‐0.79 to ‐0.07) or included only participants who were all undergoing active treatment (SMD ‐0.42; 95% CI ‐0.75 to ‐0.09). Including only trials where the investigators reported that the exercise was moderate to vigorous in intensity approached significance (SMD ‐0.36; 95% CI ‐0.72 to 0.00). We also observed an improvement in sleep disturbance when follow‐up values were reported using the Pittsburgh Sleep Quality Index (PSQI) (MD ‐1.67; 95% CI ‐2.88 to ‐0.46), but only at 12 weeks, In addition, a single trial reported a significant effect on the MDASI disturbed sleep subscale (Yang 2011).
Two additional trials reported on sleep disturbances, finding a significant difference between the exercise and control groups (Mock 1997; Oh 2008).
Social functioning
Pooling results of trials evaluating change from baseline to follow‐up in HRQoL instruments assessing social functioning showed significant improvement following an exercise intervention compared with a control intervention in 378 trial participants at 12 weeks (SMD 0.54; 95% CI 0.03 to 1.05), but no effect was observed at 6 months' follow‐up (Analysis 14.1). We also observed a significant effect of exercise when comparing follow‐up scores obtained with those from the control group at both 12 weeks' follow‐up (SMD 0.16; 95% CI 0.04 to 0.27) and 6 months' follow‐up (SMD 0.24; 95% CI 0.03 to 0.44). A positive treatment effect was still present after excluding results from trials that included participants who had completed treatment when comparing differences in scores at follow‐up between the exercise and control groups at 12 weeks (SMD 0.16; 95% CI 0.01 to 0.31) and whether the trial participants only included individuals with breast cancer or other types of cancer. No effect of exercise was present at 12 weeks when we included only trials with a low risk of bias for allocation concealment (SMD 0.10; 95% CI ‐0.06 to 0.27).
Results obtained when pooling by individual instruments showed mixed results with positive findings observed only when the FACT instrument was used to measure social function.
From trials whose data were not extracted, one reported no difference on social functioning between the exercise and control groups (Headley 2004) and a second reported a significant effect on social functioning with exercise without a corresponding effect in the control group (Oh 2008).
Spirituality
Few trials evaluated spirituality as a HRQoL domain while comparing an exercise with a control intervention. A significant effect was seen in 172 trial participants enrolled in 3 trials at 12 weeks' follow‐up (SMD 0.46; 95% CI 0.14 to 0.77) (Analysis 15.1).
A single trial without extractable data also reported no difference in spirituality between exercise and control groups (Haddad 2011).
Discussion
Summary of main results
We included 56 trials with 4826 participants randomized to an exercise (n = 2286) or comparison (n = 1985) group. Cancer diagnoses in trial participants included breast, prostate, gynecologic, hematologic, and other. Thirty‐six trials were conducted among participants who were currently undergoing active treatment for their cancer, 10 trials were conducted among participants both during and post active cancer treatment, and the remaining 10 trials were conducted among participants scheduled for active cancer treatment. Mode of exercise interventions differed across trials and included walking by itself or in combination with cycling, resistance training, or strength training; resistance training; strength training; cycling; yoga; or Qigong. HRQoL and its domains were assessed using a wide range of measures.
The results suggest that exercise interventions compared with control interventions have a positive impact on overall HRQoL and certain HRQoL domains. Exercise interventions resulted in improvements in: HRQoL from baseline to 12 weeks' follow‐up or when comparing difference in follow‐up scores at 12 weeks' follow‐up; physical functioning from baseline to 12 weeks' follow‐up and 6 months' follow‐up or when comparing differences in follow‐up scores at 12 weeks' follow‐up or 6 months' follow‐up; role function from baseline to 12 weeks' follow‐up or when comparing differences in follow‐up scores at 12 weeks and 6 months; and in social functioning at 12 weeks' follow‐up or when comparing differences in follow‐up scores at both 12 weeks' follow‐up and 6 months' follow‐up. Further, exercise interventions resulted in a decrease in fatigue from baseline to 12 weeks' follow‐up or when comparing difference in follow‐up scores at follow‐up of 12 weeks. Since there is consistency of findings on both types of measures (change scores and difference in follow‐up scores) there is greater confidence in the robustness of these findings.
Exercise interventions also resulted in improvements in: prostate cancer concerns at 12 weeks' follow‐up; breast cancer concerns when examining differences in follow‐up scores at 6 months; EWB at follow‐up more than 12 weeks but less than 6 months; and, in general health perspective when comparing differences in follow‐up scores at 12 weeks' follow‐up. Further, exercise interventions resulted in a decrease in anxiety at 12 weeks' follow‐up and at 6 months' follow‐up; depression at 12 weeks' follow‐up and at 6 months' follow‐up; and, in sleep disturbances at 12 weeks' follow‐up. These findings, however, need to be interpreted cautiously as their robustness is uncertain given the fact that the positive effects were observed not on the change scores but in the difference in follow‐up scores. These findings could be because of the different number (or type) of trials reporting results in this manner or it could be that there really is not a difference because trial authors did not account for differences in baseline values.
When examining exercise effects by subgroups, exercise interventions had significantly greater reduction in anxiety for survivors with breast cancer than those with other types of cancer. Further, there was greater reduction in depression, fatigue, and sleep disturbances, and improvement in HRQoL, EWB, physical functioning, and role function for cancer survivors diagnosed with cancers other than breast cancer but not for breast cancer. There were also greater improvement in HRQoL and physical functioning, and reduction in anxiety, fatigue, and sleep disturbances when prescribed a moderate or vigorous versus a mild exercise program.
There were positive trends and impact of exercise interventions for body image and self‐esteem, cognitive functioning, depression based on exercise program intensity, fatigue based on exercise program intensity, general health perspective, pain, and spiritual well‐being. No conclusions can be drawn based on these trends since few trials measured these outcomes or reported on the intensity of the exercise program.
The positive results must be interpreted cautiously owing to the heterogeneity of exercise programs tested, measures used to assess HRQoL and HRQoL domains, and the risk of bias in many trials. Further research is required to investigate how to sustain positive effects of exercise over time and to determine essential attributes of exercise (mode, intensity, frequency, duration, timing) by cancer type and cancer treatment for optimal effects on HRQoL and its domains.
The Table 1 provides a summary of the main results with associated risks.
Overall completeness and applicability of evidence
This systematic review included 56 trials, 54 of which were RCTs and two trials used a quasi‐randomized design to allocate participants to treatment. These trials allocated 4826 participants to either the exercise or comparison groups. Participants enrolled in the trials had various cancer diagnoses including breast, prostate, gynecologic, hematologic, and other. All trials included participants who were undergoing active cancer treatment; however, 10 trials also included participants who had completed active cancer treatment. Exercise interventions tested in the trials greatly varied and included walking by itself or in combination with cycling, resistance training, or strength training; resistance training; strength training; cycling; yoga; or Qigong. HRQoL and HRQoL domains were assessed using a wide range of measures. The Characteristics of included studies table provides detailed information on the trial attributes.
The review draws upon studies from across the globe. The comprehensive search strategy obtained information from several electronic databases, citations through Web of Science and Scopus, PubMed's related article feature, and several websites; and review of reference list of other reviews in the field and reference list of all included trials. There were no language or date restrictions in the search strategy. See Search methods for identification of studies for details on the search strategy.
In terms of applicability of evidence, the majority of trials were conducted among women. Further, many trials did not provide sociodemographic information of participants (race/ethnicity, education level, employment status, annual income, social and health benefits) that would enable comparisons between trials and assess generalizability of findings. Based on sociodemographic data presented in trials, participants were generally white and with more than 'high school' level of education. These characteristics would limit applicability of evidence to a broader cancer survivor population. Further, the majority of trials measured effects of the intervention at the end of the intervention. Thus it is unclear about how sustainable the positive effects of the intervention would be.
The exercise programs varied greatly in their mode and in their frequency, duration, and intensity. These variations and the lack of understanding about important elements of exercise programs (mode, frequency, duration of sessions and programs, and intensity) for optimal effects on HRQoL and HRQoL domains would preclude informed decision‐making in clinical settings and limit applicability of findings.
The HRQoL and HRQoL domains were assessed using a diverse range of instruments with varying psychometric properties. Further, reliance on self‐report measures, without triangulation of findings with objectively measured outcomes, can open interpretation of findings to bias.
Because of the variability across interventions, outcome measures, and follow‐up times, we looked for treatment effects that were consistent across time and different instruments used to assess a specific domain. Although we found some significant effects, they tended to be in subgroups or only at one time point, undermining our confidence in the observed effect. When we observed a significant effect, it was usually at the 12‐week follow‐up period, which typically equates to the end of the intervention. We frequently found that a positive effect at 12 weeks was not observed at later time periods (i.e. improvement in global HRQoL, improvements in physical function, reduction in fatigue, etc.), but it is unclear if this finding is because of lack of effect of the exercise intervention at later times, or because there were so few trials measuring outcomes at longer times of follow‐up.
The trials provided no data on cost or cost‐effectiveness of exercise program on HRQoL and HRQoL domains among cancer survivors undergoing treatment for their cancer.
Quality of the evidence
Results of the review need to be interpreted cautiously owing to the risk of bias. All the trials reviewed were at high risk for performance bias because blinding of participants is not possible in exercise intervention unless more rigorously controlled comparative designs are utilized to test the effects of exercise interventions. Performance bias becomes accentuated in trials where participants are asked to provide subjective assessments of outcomes such as HRQoL and HRQoL domains. In addition, the majority of trials were at high risk for detection bias as the outcome assessors were not blinded, were at high risk for attrition bias owing to inadequate handling of incomplete data, and were at high or unclear risk for selection bias because of inadequate concealment of allocation to the intervention.
The Table 1, Figure 2, and Figure 3 provide a summary on the quality of evidence.
Potential biases in the review process
The strength of this review is the comprehensive search strategy that included a search of 11 electronic databases, citations through Web of Science and Scopus, PubMed's related article feature, and several websites; and, review of reference lists of other reviews in the field and reference lists of all included trials. The comprehensive search strategy was designed and implemented to ensure the identification and retrieval of the maximum number of available published trials and trials in the gray literature. The search strategy also ensured no language restrictions. Trials published in non‐English language were assessed for eligibility and, if eligible, had data abstracted by native speakers of the language in which the trial was published. In spite of such a comprehensive search, it is still possible that this review may have a publication bias. We prepared funnel plots to assess publication bias for change from baseline to follow‐up and for follow‐up values for outcomes such as global QoL (Figure 4; Figure 5), fatigue (Figure 6; Figure 7), and physical functioning (Figure 8; Figure 9). Visually these figures showed some slight asymmetry indicating that there is some publication bias in this area of research. We did not complete funnel plots for the other outcomes because too few studies contributed to the outcome measures. It is possible this review missed some potentially eligible trials in the gray literature, but given the study results, it is unclear whether the addition of trials only in the gray literature would have a significant impact on results of the review if, as has been suggested, trials reported only in the gray literature includes trials that have small sample sizes and inconclusive results (McAuley 2000).
We corresponded with and requested additional data from 22 trial authors (Arbane 2009; Battaglini 2008; Brown 2006; Campbell 2005; Cheville 2010; Crowley 2003; Culos‐Reed 2010; DiSipio 2009; Gomes 2011; Griffith 2009; Haddad 2011; Headley 2004; Jarden 2009; Lanctot 2010; Mock 1994; Mock 1997; Mock 2001; Oh 2008; Raghavendra 2007; Segal 2001; Tang 2010; Yang 2011), and five of these trial authors (Arbane 2009; Griffith 2009; Lanctot 2010; Segal 2001; Yang 2011) contacted were able to provide additional data. Of the remaining 17 trials for which we requested additional data, we were unable to contact the primary author for seven trials, received no response from six trial authors, and four trial authors either did not have access to their database or were unable to provide additional information for some other reason. Obtaining additional data allowed inclusion of these trials in the quantitative meta‐analyses, which made the analyses and findings more robust and complete.
Agreements and disagreements with other studies or reviews
Several systematic reviews (Craft 2011; Cramp 2008; Cramp 2010; Duijts 2011; Ferrer 2011; Speck 2010a) evaluated the effectiveness of exercise interventions on HRQoL or HRQoL domains. All of these reviews included people both during and after active cancer and only one review (Speck 2010a) presented findings by treatment status. Cramp 2008 examined the effect of exercise on cancer‐related fatigue and reported that overall exercise was beneficial in the management of cancer‐related fatigue and that exercise was beneficial in the management of cancer‐related fatigue among breast cancer survivors during and after active cancer treatment, a finding that is similar to what we report here. In a more recent review, Cramp 2010, based on a review of the effect of resistance (strength) training on HRQoL, reported no significant benefit of resistance training on global HRQoL and on anxiety and depression. In contrast, we found an effect of exercise on global HRQoL, but not a consistent effect on depression. Two of the four trials reviewed by Cramp 2010 reported a significant improvement in fatigue. Duijts 2011 evaluated the effects of exercise (and behavioral) interventions on fatigue, depression, body‐image, stress, and HRQoL in breast cancer survivors both during and after cancer treatment. Physical exercise interventions had moderate statistically significant effects for fatigue, depression, body‐image, and HRQoL but the effect on anxiety, although in the expected direction, was not statistically significant. Again, these findings are generally consistent with those presented here although we did not find a consistent effect on depression and anxiety, and no effect on body image. Ferrer 2011, based on a meta‐analysis of the efficacy of exercise interventions in improving HRQoL in cancer survivors during and after cancer treatment, documented increased HRQoL scores but the effect was more pronounced for interventions that had intense aerobic exercises and which targeted women. Speck 2010a evaluated the effects of physical activity across the cancer control continuum (including during and after cancer treatment). Physical activity interventions among people who had completed active treatment for their cancer had moderate effects on fatigue and breast cancer‐specific concerns and had small to moderate effects on overall HRQoL. Craft 2011 reviewed the effects of exercise on depression and documented that exercise had a modest positive effect on depressive symptoms. Our review did not find a consistent effect on depression in contrast to these reviews, but our findings are congruent with respect to global HRQoL and fatigue observed by other reviewers. These differences may be because of differences in the trial population in that our review only included individuals who were undergoing active cancer treatment, although some of the trials included in this review also included participants who had completed active cancer treatment.
Authors' conclusions
Implications for practice.
This systematic review finds that exercise interventions may have beneficial effects at varying follow‐up periods on overall HRQoL and certain HRQoL domains including physical functioning, role function, social functioning, and fatigue among cancer survivors undergoing active cancer treatment for their primary or recurrent cancer. Since there is consistency of findings on both types of measures (change scores and difference in follow‐up scores) there is greater confidence in the robustness of these findings. Positive effects of exercise interventions are more pronounced with moderate or vigorous‐intensity versus mild‐intensity exercise programs. Exercise programs could be considered as an integral component for the management of HRQoL among cancer survivors undergoing active cancer treatment.
Exercise interventions also resulted in improvements at varying follow‐up periods in prostate cancer concerns, breast cancer concerns, EWB, general health perspective, anxiety, depression, and sleep disturbances. These findings, however, need to be interpreted cautiously as their robustness is uncertain given the fact that the positive effects were observed not on the change scores but in the difference in follow‐up scores. These findings could be because of the different number (or type) of trials reporting results in this manner or it could be that there really is not a difference because trial authors did not account for differences in baseline values.
There were positive trends and impact of exercise interventions for body image and self‐esteem, cognitive functioning, depression based on exercise program intensity, fatigue based on exercise program intensity, general health perspective, pain, and spiritual well‐being. No conclusions can be drawn based on these trends since few trials measured these outcomes or reported on the intensity of the exercise program.
The positive results must be interpreted cautiously owing to the heterogeneity of exercise programs tested and measures used to assess HRQoL and HRQoL domains, and the risk of bias in may trials. Further, a lack of understanding about important elements of exercise programs (mode, frequency, duration of sessions and programs, and intensity) for optimal effects on HRQoL and HRQoL domains would preclude informed decision‐making in clinical settings and limit practical applicability of findings.
From a practice perspective, it would be important to understand whether certain exercise attributes have more or less optimal effects on HRQoL and HRQoL domains among survivors of certain types of cancers undergoing active treatment for their cancer. Further, it would be important to understand which mode of exercise program (e.g. strength, resistance, Tai Chi, yoga, aerobic, anaerobic) coupled with what levels of essential attributes (frequency of program, duration of program and each session) is optimal for which cancer type and cancer treatment.
Implications for research.
This systematic review and meta‐analysis of 56 trials on the effects of exercise on HRQoL and HRQoL domains for cancer survivors undergoing active treatment for their cancer provides evidence that exercise interventions may have beneficial effects at varying follow‐up periods on overall HRQoL and certain HRQoL domains, including physical functioning, role function, social functioning, and fatigue, among cancer survivor undergoing active cancer treatment for their primary or recurrent cancer. Positive effects of exercise interventions are more pronounced with moderate‐ or vigorous‐intensity versus mild‐intensity exercise programs. Further, findings of this review suggests that exercise interventions may have minimal or no effects on HRQoL domains such as body image and self‐esteem, cognitive functioning, depression based on exercise program intensity, fatigue based on exercise program intensity, general health perspective, pain, and spiritual well‐being among cancer survivors undergoing active treatment for their cancer.
Further research is required to investigate whether the effect of an exercise intervention can be maintained beyond the active intervention period, and if so, how to sustain changes in exercise behaviors and positive effects of exercise on HRQoL and HRQoL domains. Empirical evidence is also needed to determine the optimal follow‐up period from end of the intervention. To further this understanding, rigorous RCTs could include qualitative research components in trials to benefit from the contextually rich insights gained from engaging participants about their experiences in exercise interventions.
More research is needed to determine essential attributes of exercise (mode, intensity, frequency, duration, timing) by cancer type and cancer treatment for optimal effects on HRQoL and its domains.
HRQoL and HRQoL domains are important measures of cancer survivorship. However, the heterogeneous range of measures used to assess HRQoL and HRQoL domains, make comparisons of findings between trials extremely difficult. Efforts such as the Patient‐Reported Outcomes Measurement Information System (PROMIS) may help address these issues (Cella 2010; National Cancer Institute 2012).
What's new
Date | Event | Description |
---|---|---|
12 May 2020 | Amended | The Editors are looking for contributors to update and maintain this Cochrane Review. Contact ruh‐tr.gnoc‐cochrane@nhs.net for further information. The searches have been updated to May 2019 and potentially relevant studies added to ‘Other references; Classification pending’. |
History
Protocol first published: Issue 4, 2010 Review first published: Issue 8, 2012
Acknowledgements
The authors would like to thank and acknowledge Clare Jess (Managing Editor) and Editorial Base of the Cochrane Gynecological Cancer Review Group for their help and editorial advice during the preparation of the review. Moreover, the authors would like to thank the peer reviewers and consumer reviewer for their invaluable feedback during the peer review process, and the authors of primary trials for additional information about their trials. The authors also gratefully acknowledge the contributions of Dr. Carolyn Gotay who assisted in identifying trials for inclusion in the review and Nadia Bennett who assisted in extracting data for trials meeting the eligibility criteria. This research was supported in part by the National Institute for Health Research (NIHR) Health Technology Assessment program. The views and opinions expressed therein are those of the authors and do not necessarily reflect those of the funding agency.
Appendices
Appendix 1. MEDLINE search strategy
[inception to May 2010; 430 hits] [January 2010 to November 2011; 190 hits]
exp exercise/
exercise tolerance/
exp exertion/
Pliability/
physical fitness/
"Physical Education and Training"/
exp physical endurance/
exercise therapy/
exercising.mp.
physical condition$.mp.
stamina.mp.
motor activity/
exercise test/
exp Sports/
tai chi.mp. or tai ji/
yoga/
muscle stretching exercises/
exp "range of motion, articular"/
pilates.mp.
qigong.mp.
chi kung.mp.
resistance training.mp.
mind body therap$.mp.
exp complementary therapies/
Bad Ragaz.mp.
Ai Chi.mp.
Halliwick.mp.
hippotherapy.mp.
Hydrotherapy/
balance exercise$.mp.
aquatic exercise$.mp.
1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31
"quality of life"/
exp health status/
"activities of daily living"/
life qualit$.mp.
exp self concept/
health level.mp.
level of health.mp.
wellness.mp.
well being.mp.
(activities of daily life or daily living activities).mp. [mp=protocol supplementary concept, rare disease supplementary concept, title, original title, abstract, name of substance word, subject heading word, unique identifier]
functional ability.mp.
good health.mp.
healthiness.mp.
patient reported outcomes.mp.
social adjustment/
physical limitations.mp.
psychiatric status.mp.
pain measurement/
functional assessment.mp.
fact questionnaire.mp.
fact survey.mp.
qlc‐c30.mp.
facit.mp.
toi.mp.
(flic or sf‐36 or ces‐d or bdi or sta1 or bfi or hads or lasa or poms or qli or rsci or pais or bpi or msas or mos or ptgi or panas).mp.
sense of coherence.mp.
randomized.ab.
placebo.ab.
randomly.ab.
trial.ab.
randomized controlled trial.pt.
controlled clinical trial.pt.
random$.ab
exp neoplasms/
cancer.mp.
(neoplasm$ or tumor$ or tumour or malignan$).mp.
active treatment.mp.
35 or 33 or 53 or 48 or 42 or 46 or 44 or 55 or 50 or 39 or 57 or 36 or 40 or 51 or 58 or 41 or 47 or 52 or 38 or 34 or 56 or 49 or 37 or 45 or 43 or 54
59 or 60 or 63 or 64 or 61 or 62 or 65
66 or 67 or 68 or 69
32 and 70 and 71 and 72
Survivors/
survivor.mp.
74 or 75
73 not 76
Appendix 2. CENTRAL search strategy
[inception to May 2010; 423 hits] [January 2010 to November 2011; 219 hits]
Searched via Ovid EBM Reviews
[mp=ti, ot, ab, tx, kw, ct, sh, hw]
exercise.mp.
physical fitness.mp.
physical endurance.mp.
exercising.mp.
physical conditioning.mp.
stamina.mp.
sports.mp.
tai chi.mp.
yoga.mp.
pilates.mp.
qigong.mp.
chi kung.mp.
resistance training.mp.
mind body therap$.mp.
complementary therap$.mp.
bad ragaz.mp.
ai chi.mp.
halliwick.mp.
hippotherapy.mp.
hydrotherapy.mp.
balance exercise$.mp.
aquatic exercise$.mp.
exercise tolerance.mp.
pliability.mp.
exertion.mp.
exercise therapy.mp.
motor activit$.mp.
exercise test$.mp.
muscle stretching exercise$.mp.
range of motion.mp.
1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30
quality of life.mp.
health status.mp.
activities of daily living.mp.
life qualit$.mp.
self concept.mp.
health level.mp.
level of health.mp.
wellness.mp.
well being.mp.
(activities of daily life or daily living activities).mp.
functional ability.mp.
good health.mp.
healthiness.mp.
patient reported outcomes.mp.
social adjustment.mp.
physical limitation$.mp.
psychiatric status.mp.
pain measurement.mp.
functional assessment.mp.
fact questionnaire.mp.
fact survey.mp.
qlc‐c30.mp.
facit.mp.
toi.mp.
(flic or sf‐36 or ces‐d or bdi or sta1 or bfi or hads or lasa or poms or qli or rsci or pais or bpi or msas or mos or ptgi).mp.
sense of coherence.mp.
32 or 33 or 34 or 35 or 36 or 37 or 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48 or 49 or 50 or 51 or 52 or 53 or 54 or 55 or 56 or 57
randomized.ab.
placebo.ab.
randomly.ab.
trial.ab.
random$.ab.
59 or 60 or 61 or 62 or 63
cancer.mp.
(neoplasm$ or tumor$ or tumour$ or malignan$).mp.
active treatment.mp.
65 or 66 or 67
31 and 58 and 64 and 68
survivor$.mp.
69 not 70
Appendix 3. EMBASE search strategy
[inception to May 2010; 713 hits] [January 2010 to November 2011; 349 hits]
exp exercise/
exertion.mp.
pliability/
fitness/
(physical education and training).mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer, drug manufacturer name]
physical endurance.mp. or endurance/
kinesiotherapy/
exercising.mp.
"physical condition$".mp.
stamina.mp.
exp motor activity/
exp sports/
exercise test/
tai chi.mp.
tai ji.mp.
yoga/
stretching exercise/
"range of motion"/
pilates.mp.
qigong.mp.
chi kung.mp.
muscle strength/ or muscle training/ or resistance training.mp.
mind body therapy.mp.
alternative medicine/
bad ragaz.mp.
ai chi.mp.
halliwick.mp.
hippotherapy.mp.
hydrotherapy/
balance exercises.mp.
aquatic exercise/
1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31
"quality of life"/
exp health status/
daily life activity/
life qualit$.mp.
exp self concept/
health level.mp.
"level of health".mp.
wellbeing/
wellness.mp.
good health.mp.
functional ability.mp.
healthiness.mp.
"patient reported outcomes".mp.
social adaptation/
physical limitation$.mp.
psychiatric status.mp.
pain assessment/
functional assessment/
questionnaire/ or fact questionnaire.mp.
fact survey.mp.
health survey/
qlc‐c30.mp.
facit.mp.
toi.mp.
sense of coherence.mp.
(flic or sf‐36 or ces‐d or bdi or stal or bfi or hads or lasa or poms or qli or rsci or pais or bpi or msas or mos or ptgi or panas).mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer, drug manufacturer name]
randomized.ab.
placebo.ab.
randomly.ab.
trial.ab.
random$.ab.
randomized controlled trial.pt
59 or 60 or 61 or 62 or 63 or 64
35 or 33 or 53 or 48 or 42 or 46 or 44 or 55 or 50 or 39 or 57 or 36 or 40 or 51 or 58 or 41 or 47 or 52 or 38 or 34 or 56 or 49 or 37 or 45 or 43 or 54
exp neoplasm/
cancer.mp.
(neoplasm$ or tumor$ or tumour or malignan$).mp3
active treatment
(67 or 68 or 69 or 70)
Survivors/
survivor$.mp.
72 or 73
32 and 65 and 66 and 71
75 not 74
Appendix 4. CINAHL search strategy
[inception to May 2010; 92 hits] [January 2010 to November 2011; 36 hits]
Search ID# | Search Terms |
S73 | s72 NOT s70 |
S72 | S32 and S59 and S65 and S71 |
S71 | S66 or S67 |
S70 | S68 or S69 |
S69 | survivor* |
S68 | (MH "Cancer Survivors") |
S67 | cancer |
S66 | (MH "Neoplasms+") |
S65 | S60 or S61 or S62 or S63 or S64 |
S64 | AB randomized controlled trial |
S63 | PT clinical trial |
S62 | AB randomly or trial |
S61 | AB placebo |
S60 | AB randomized |
S59 | S33 or S34 or S35 or S36 or S37 or S38 or S39 or S40 or S41 or S42 or S43 or S44 or S45 or S46 or S47 or S48 or S49 or S50 or S51 or S52 or S55 or S56 or S57 or S58 |
S58 | sense of coherence |
S57 | (flic or sf‐36 or ces‐d or bdi or sta1 or bfi or hads or lasa or poms or qli or rsci or pais or bpi or msas or mos or ptgi or panas) |
S56 | toi |
S55 | facit |
S54 | qlc‐c30 |
S53 | fact survey |
S52 | "fact questionnaire" |
S51 | (MH "Functional Assessment") |
S50 | (MH "Pain Measurement") |
S49 | "psychiatric status" |
S48 | physical limitations |
S47 | (MH "Social Adjustment") |
S46 | "patient reported outcomes" |
S45 | healthiness |
S44 | good health |
S43 | (MH "Functional Status") |
S42 | activities of daily life or daily living activities |
S41 | (MH "Psychological Well‐Being") |
S40 | (MH "Wellness") |
S39 | level of health |
S38 | health level |
S37 | (MH "Self Concept+") |
S36 | life qualit* |
S35 | (MH "Activities of Daily Living") |
S34 | (MH "Health Status+") |
S33 | (MH "Quality of Life+") |
S32 | S1 or S2 or S3 or S4 or S5 or S6 or S7 or S8 or S9 or S10 or S11 or S12 or S13 or S14 or S15 or S16 or S17 or S18 or S19 or S20 or S21 or S22 or S23 or S24 or S25 or S26 or S27 or S28 or S29 or S30 or S31 |
S31 | aquatic exercise* |
S30 | balance exercise* |
S29 | hydrotherapy |
S28 | hippotherapy |
S27 | halliwick |
S26 | bad ragaz |
S25 | (MH "Alternative Therapies") |
S24 | mind body therap* |
S23 | ("resistance training") or (MH "Muscle Strengthening") |
S22 | chi kung |
S21 | qigong |
S20 | pilates |
S19 | (MH "Range of Motion") |
S18 | "muscle stretching exercises" |
S17 | (MH "Yoga") |
S16 | tai chi |
S15 | (MH "Sports+") |
S14 | (MH "Exercise Test") |
S13 | (MH "Motor Activity") |
S12 | stamina |
S11 | physical condition* |
S10 | exercising |
S9 | (MH "Therapeutic Exercise") |
S8 | (MH "Physical Endurance") |
S7 | (MH "Physical Therapy") |
S6 | (MH "Physical Education and Training") |
S5 | (MH "Physical Fitness") |
S4 | (MH "Pliability") |
S3 | (MH "Exertion") |
S2 | (MH "Exercise Tolerance") |
S1 | (MH "Exercise") |
Appendix 5. PsycINFO search strategy
[inception to May 2010; 18 hits] [January 2010 to November 2011; 4 hits]
exp exercise/
physical fitness/
exp physical endurance/
exercising.mp.
physical condition$.mp.
stamina.mp.
exp Sports/
tai chi.mp. or tai ji/
yoga/
pilates.mp.
qigong.mp.
chi kung.mp.
resistance training.mp.
mind body therap$.mp.
exp complementary therapies/
Bad Ragaz.mp.
Ai Chi.mp.
Halliwick.mp.
hippotherapy.mp.
balance exercise$.mp.
aquatic exercise$.mp.
"quality of life"/
exp health status/
"activities of daily living"/
life qualit$.mp.
exp self concept/
health level.mp.
level of health.mp.
wellness.mp.
well being.mp.
(activities of daily life or daily living activities).mp.
functional ability.mp.
good health.mp.
healthiness.mp.
patient reported outcomes.mp.
social adjustment/
physical limitations.mp.
psychiatric status.mp.
pain measurement/
functional assessment.mp.
fact questionnaire.mp.
fact survey.mp.
qlc‐c30.mp.
facit.mp.
toi.mp.
(flic or sf‐36 or ces‐d or bdi or sta1 or bfi or hads or lasa or poms or qli or rsci or pais or bpi or msas or mos or ptgi or panas).mp.
sense of coherence.mp.
randomized.ab.
placebo.ab.
randomly.ab.
trial.ab.
exp neoplasms/
cancer.mp.
24 or 22 or 42 or 37 or 31 or 35 or 33 or 44 or 39 or 28 or 46 or 25 or 29 or 40 or 47 or 30 or 36 or 41 or 27 or 23 or 45 or 38 or 26 or 34 or 32 or 43
random$.ab.
(neoplasm$ or tumor$ or tumour or malignan$).mp.
active treatment.mp.
52 or 53 or 56 or 57
Survivors/
59 or survivor.mp.
exercise tolerance.mp.
Physical Education/
exertion.mp.
pliability.mp.
exercise therapy.mp.
Motor Processes/ or motor activity.mp.
exercise test.mp.
muscle stretching exercise*.mp.
"Range of Motion"/
hydrotherapy.mp.
1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 61 or 62 or 63 or 64 or 65 or 66 or 67 or 68 or 69 or 70
54 and 58 and 71
48 or 49 or 50 or 51 or 55
72 and 73
74 not 60
Appendix 6. Other search strategies
LILACS search strategy [inception to May 2010; 3 hits] [January 2010 to November 2011; 12 hits]
Neoplasms and exercise and treatment
OT Seeker search strategy [inception to May 2010; 26 hits] [January 2010 to November 2011; 20 hits]
Database Note returned with search: A precise search did not find any articles. A less precise search has been done and the results are shown below.
(exercise OR exertion OR pliability OR "physical fitness" OR "physical endurance" OR "exercise therapy" OR "motor activity" OR sports) AND cancer AND "quality of life" AND "active treatment"
Limits: Method: clinical trial and Diagnosis/Subdiscipline: Oncology/palliative care
PEDro search strategy [inception to May 2010; 71 hits] [January 2010 to November 2011; 33 hits]
exercise AND cancer AND "quality of life" AND treatment
SIGLE search strategy (now OpenGrey) [inception to July 2010; 0 hits] [January 2010 to November 2011; 0 hits]
exercise AND (cancer OR neoplasms) AND "quality of life AND treatment
Sociological Abstracts (SocINDEX) search strategy [inception to May 2010; 16 hits] [January 2010 to November 2011; 1 hit]
Search ID# | Search Terms |
S74 | s73 NOT survivor* |
S73 | S32 and S58 and S71 and S72 |
S72 | S66 or S67 or S68 or S69 or S70 |
S71 | S59 or S60 or S61 or S62 or S63 or S64 or S65 |
S70 | active treatment |
S69 | malignan* |
S68 | tumor or tumour |
S67 | neoplasm* |
S66 | DE Cancer |
S65 | AB random* |
S64 | controlled clinical trial |
S63 | randomized controlled trial |
S62 | AB trial |
S61 | AB randomly |
S60 | AB placebo |
S59 | AB randomized |
S58 | S33 or S34 or S35 or S36 or S37 or S38 or S39 or S40 or S41 or S42 or S43 or S44 or S45 or S46 or S47 or S48 or S49 or S50 or S51 or S52 or S54 or S55 or S56 or S57 |
S57 | sense of coherence |
S56 | flic or sf‐36 or ces‐d or bdi or sta1 or bfi or hads or lasa or pms or qli or rsci or pais or bpi or msas or mos or ptgi or panas |
S55 | facit |
S54 | toi |
S53 | qlc‐c30 |
S52 | fact survey |
S51 | fact questionnaire |
S50 | functional assessment |
S49 | pain measurement |
S48 | psychiatric status |
S47 | physical limitations |
S46 | DE "SOCIAL adjustment" |
S45 | patient reported outcomes |
S44 | healthiness |
S43 | good health |
S42 | functional ability |
S41 | activities of daily life OR daily living activities |
S40 | wellness |
S39 | level of health |
S38 | health level |
S37 | self concept |
S36 | life qualit* |
S35 | DE "ACTIVITIES of daily living" |
S34 | health status |
S33 | DE "QUALITY of life" |
S32 | S1 or S2 or S3 or S4 or S5 or S6 or S7 or S8 or S9 or S10 or S11 or S12 or S13 or S14 or S15 or S16 or S17 or S18 or S19 or S20 or S21 or S22 or S23 or S24 or S25 or S28 or S29 or S30 or S31 |
S31 | aquatic exercise* |
S30 | balance exercise* |
S29 | hydrotherapy |
S28 | hippotherapy |
S27 | halliwick |
S26 | ai chi |
S25 | bad ragaz |
S24 | complementary therap* |
S23 | mind body therap* |
S22 | resistance training |
S21 | chi kung |
S20 | qigong |
S19 | pilates |
S18 | range of motion |
S17 | muscle strengthening exercise* |
S16 | yoga |
S15 | tai chi |
S14 | sports |
S13 | exercise test |
S12 | motor activity |
S11 | stamina |
S10 | physical condition* |
S9 | exercising |
S8 | exercise therapy |
S7 | physical endurance |
S6 | physical education |
S5 | DE "PHYSICAL fitness" |
S4 | pliability |
S3 | exertion |
S2 | exercise tolerance |
S1 | DE "EXERCISE" |
SportDiscus search strategy [inception to May 2010; 21 hits] [January 2010 to November 2011; 10 hits]
Search ID# | Search Terms |
S76 | S74 NOT S75 |
S75 | survivor* |
S74 | S34 and S70 and S71 and S73 |
S73 | S66 or S67 or S68 or S72 |
S72 | active treatment |
S71 | S60 or S61 or S62 or S63 or S64 or S65 or S69 |
S70 | S35 or S36 or S37 or S38 or S39 or S40 or S41 or S42 or S43 or S44 or S45 or S46 or S47 or S48 or S49 or S50 or S51 or S52 or S53 or S54 or S55 or S56 or S57 or S58 or S59 |
S69 | random* |
S68 | cancer |
S67 | neoplasms |
S66 | DE "CANCER" OR DE "BREAST ‐‐ Cancer" OR DE "LEUKEMIA" OR DE "LUNGS ‐‐ Cancer" OR DE "MELANOMA" |
S65 | controlled clinical trial |
S64 | randomized controlled trial |
S63 | trial |
S62 | randomly |
S61 | placebo |
S60 | randomized |
S59 | sense of coherence |
S58 | (flic OR sf‐36 OR ces‐d OR bdi OR sta1 OR bfi OR hads OR lasa OR poms OR qli OR rsci OR pais OR bpi OR msas OR mos OR ptgi OR panas) |
S57 | toi |
S56 | facit |
S55 | qlc‐c30 |
S54 | fact survey |
S53 | fact questionnaire |
S52 | functional assessment |
S51 | pain measurement |
S50 | psychiatric status |
S49 | physical limitations |
S48 | social adjustment |
S47 | patient reported outcomes |
S46 | healthiness |
S45 | good health |
S44 | functional ability |
S43 | activities of daily living OR daily living activities |
S42 | well being |
S41 | wellness |
S40 | level of health |
S39 | health level |
S38 | self concept |
S37 | life qualit* |
S36 | DE "ACTIVITIES of daily living" |
S35 | DE "QUALITY of life" OR DE "HEALTH status indicators" OR DE "LIFESTYLES" OR DE "WELL‐being" |
S34 | S1 or S2 or S3 or S4 or S5 or S6 or S7 or S8 or S9 or S10 or S11 or S12 or S13 or S14 or S15 or S16 or S17 or S18 or S19 or S20 or S21 or S22 or S23 or S24 or S25 or S26 or S27 or S28 or S29 or S30 or S31 or S32 or S33 |
S33 | DE "AQUATIC exercises" |
S32 | balance exercise* |
S31 | DE hydrotherapy |
S30 | hippotherapy |
S29 | halliwick |
S28 | ai chi |
S27 | bad ragaz |
S26 | complementary therap* |
S25 | mind body therap* |
S24 | resistance training |
S23 | DE "WEIGHT training" OR DE "BENCH press" OR DE "DEAD lift (Weight lifting)" OR DE "POWERLIFTING" OR DE "SQUAT (Weight lifting)" OR DE "STONE lifting" OR DE "WEIGHT lifting" |
S22 | chi kung |
S21 | qigong |
S20 | DE pilates |
S19 | DE pilates |
S18 | DE "JOINTS ‐‐ Range of motion" |
S17 | muscle stretching exercise* |
S16 | DE yoga |
S15 | DE tai chi |
S14 | DE sports |
S13 | exercise test |
S12 | motor activity |
S11 | stamina |
S10 | physical condition* |
S9 | exercising |
S8 | DE "EXERCISE therapy" |
S7 | physical endurance |
S6 | DE "PHYSICAL education & training" |
S5 | DE "PHYSICAL fitness" |
S4 | pliability |
S3 | exertion |
S2 | exercise tolerance |
S1 | DE "EXERCISE" |
Data and analyses
Comparison 1. Health‐related quality of life.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
1.1 Overall quality of life change score | 14 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.1.1 Up to 12 weeks' follow‐up | 11 | 806 | Std. Mean Difference (IV, Random, 95% CI) | 0.47 [0.16, 0.79] |
1.1.2 More than 12 weeks' to less than 6 months' follow‐up | 4 | 442 | Std. Mean Difference (IV, Random, 95% CI) | 1.25 [‐0.03, 2.53] |
1.1.3 6 months' follow‐up | 3 | 282 | Std. Mean Difference (IV, Random, 95% CI) | 0.14 [‐0.11, 0.39] |
1.2 Overall quality of life follow‐up values | 26 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.2.1 Up to 12 weeks' follow‐up | 20 | 1166 | Std. Mean Difference (IV, Random, 95% CI) | 0.33 [0.12, 0.55] |
1.2.2 More than 12 weeks' to less than 6 months' follow‐up | 6 | 529 | Std. Mean Difference (IV, Random, 95% CI) | 0.25 [0.07, 0.43] |
1.2.3 6 months' follow‐up | 8 | 686 | Std. Mean Difference (IV, Random, 95% CI) | 0.13 [‐0.09, 0.35] |
1.3 FACT‐An change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.3.1 Up to 12 weeks' follow‐up | 1 | 55 | Mean Difference (IV, Random, 95% CI) | ‐6.90 [‐21.73, 7.93] |
1.3.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | 6.33 [1.31, 11.34] |
1.3.3 6 months' follow‐up | 1 | 201 | Mean Difference (IV, Random, 95% CI) | 2.10 [‐5.77, 9.97] |
1.4 FACT‐An follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.4.1 Up to 12 weeks' follow‐up | 3 | 312 | Mean Difference (IV, Random, 95% CI) | 4.50 [‐4.31, 13.32] |
1.4.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 253 | Mean Difference (IV, Random, 95% CI) | 8.31 [‐3.36, 19.98] |
1.4.3 6 months' follow‐up | 2 | 230 | Mean Difference (IV, Random, 95% CI) | 5.16 [‐4.15, 14.46] |
1.5 FACT‐B change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.5.1 Up to 12 weeks' follow‐up | 2 | 57 | Mean Difference (IV, Random, 95% CI) | 6.81 [‐5.81, 19.43] |
1.5.2 6 months' follow‐up | 1 | 36 | Mean Difference (IV, Random, 95% CI) | 8.20 [‐0.29, 16.69] |
1.6 FACT‐B follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.6.1 Up to 12 weeks' follow‐up | 3 | 120 | Mean Difference (IV, Random, 95% CI) | 0.73 [‐8.23, 9.69] |
1.6.2 6 months' follow‐up | 2 | 170 | Mean Difference (IV, Random, 95% CI) | ‐0.55 [‐3.65, 2.55] |
1.7 FACT‐G change | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.7.1 Up to 12 weeks' follow‐up | 4 | 286 | Mean Difference (IV, Random, 95% CI) | 5.70 [2.30, 9.09] |
1.7.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | 2.52 [‐0.75, 5.79] |
1.7.3 6 months' follow‐up | 2 | 81 | Mean Difference (IV, Random, 95% CI) | 3.52 [‐2.94, 9.99] |
1.8 FACT‐G follow‐up values | 10 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.8.1 Up to 12 weeks' follow‐up | 6 | 318 | Mean Difference (IV, Random, 95% CI) | 6.89 [0.44, 13.35] |
1.8.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 151 | Mean Difference (IV, Random, 95% CI) | 6.25 [‐0.75, 13.26] |
1.8.3 6 months' follow‐up | 7 | 485 | Mean Difference (IV, Random, 95% CI) | 1.89 [‐2.38, 6.17] |
1.9 FACT‐P change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.9.1 Up to 12 weeks' follow‐up | 2 | 176 | Mean Difference (IV, Random, 95% CI) | 8.55 [0.45, 16.65] |
1.10 FACT‐P follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.10.1 Up to 12 weeks' follow‐up | 2 | 64 | Mean Difference (IV, Random, 95% CI) | 7.36 [‐1.59, 16.31] |
1.11 FACIT‐F change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.11.1 Up to 12 weeks' follow‐up | 2 | 205 | Mean Difference (IV, Random, 95% CI) | 1.55 [‐6.37, 9.48] |
1.11.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 0.21 [‐8.78, 9.20] |
1.12 FACIT‐F follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.12.1 Up to 12 weeks' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 13.30 [‐3.16, 29.76] |
1.12.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 6.83 [‐9.26, 22.92] |
1.13 QLQ‐C30 change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.13.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | ‐5.14 [‐15.97, 5.69] |
1.13.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 100 | Mean Difference (IV, Random, 95% CI) | 5.03 [4.68, 5.38] |
1.14 QLQ‐C30 follow‐up values | 7 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.14.1 Up to 12 weeks' follow‐up | 5 | 210 | Mean Difference (IV, Random, 95% CI) | 7.31 [1.99, 12.63] |
1.14.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 147 | Mean Difference (IV, Random, 95% CI) | 6.00 [0.69, 11.31] |
1.14.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | 14.50 [‐0.75, 29.75] |
1.15 FLIC follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.15.1 Up to 12 weeks' follow‐up | 1 | 62 | Mean Difference (IV, Random, 95% CI) | 30.40 [21.03, 39.77] |
1.16 WHO BREF follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.16.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | 0.17 [‐0.05, 0.39] |
1.17 Ferrand and Powers follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.17.1 Up to 12 weeks' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | 1.00 [‐3.33, 5.33] |
1.18 Spitzer QoL Uniscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.18.1 Up to 12 weeks' follow‐up | 1 | 96 | Mean Difference (IV, Random, 95% CI) | 3.50 [‐5.10, 12.10] |
1.19 MDASI‐T Symptom Interference change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.19.1 Up to 12 months' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.64 [‐2.29, ‐0.99] |
1.20 MDASI‐T Symptom Interference follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.20.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.50 [‐2.36, ‐0.64] |
1.21 Quality of Life Systemic Inventory follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
1.21.1 Up to 12 months' follow‐up | 1 | 73 | Mean Difference (IV, Random, 95% CI) | ‐0.75 [‐3.32, 1.82] |
Comparison 2. Condition‐specific quality of life.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
2.1 Breast cancer change | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.1.1 Up to 12 weeks' follow‐up | 3 | 224 | Mean Difference (IV, Random, 95% CI) | ‐0.37 [‐1.93, 1.20] |
2.1.2 6 months' follow‐up | 2 | 81 | Mean Difference (IV, Random, 95% CI) | 0.24 [‐1.60, 2.08] |
2.2 Breast cancer follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.2.1 Up to 12 weeks' follow‐up | 4 | 331 | Mean Difference (IV, Random, 95% CI) | 1.21 [‐0.65, 3.07] |
2.2.2 6 months' follow‐up | 4 | 307 | Mean Difference (IV, Random, 95% CI) | 1.45 [0.08, 2.81] |
2.3 Overall prostate cancer change | 3 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.3.1 Up to 12 weeks' follow‐up | 3 | 242 | Std. Mean Difference (IV, Random, 95% CI) | 0.41 [0.15, 0.67] |
2.3.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 121 | Std. Mean Difference (IV, Random, 95% CI) | 0.28 [‐0.10, 0.65] |
2.4 Overall prostate cancer follow‐up values | 3 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.4.1 Up to 12 weeks' follow‐up | 3 | 242 | Std. Mean Difference (IV, Random, 95% CI) | 0.22 [‐0.04, 0.48] |
2.4.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 162 | Std. Mean Difference (IV, Random, 95% CI) | 0.27 [‐0.04, 0.58] |
2.5 FACT prostate cancer subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.5.1 Up to 12 weeks' follow‐up | 2 | 142 | Mean Difference (IV, Random, 95% CI) | 2.02 [0.12, 3.93] |
2.5.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 121 | Mean Difference (IV, Random, 95% CI) | 1.42 [‐0.48, 3.32] |
2.6 FACT prostate cancer subscale follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.6.1 Up to 12 weeks' follow‐up | 2 | 142 | Mean Difference (IV, Random, 95% CI) | 1.91 [‐0.21, 4.03] |
2.6.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 162 | Mean Difference (IV, Random, 95% CI) | 1.75 [‐0.25, 3.75] |
2.7 Expanded Prostate Cancer Index Composite change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.7.1 Up to 12 weeks' follow‐up | 1 | 100 | Mean Difference (IV, Random, 95% CI) | 6.75 [1.44, 12.06] |
2.8 Expanded Prostate Cancer Index Composite follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.8.1 Up to 12 weeks' follow‐up | 1 | 100 | Mean Difference (IV, Random, 95% CI) | 1.73 [‐4.19, 7.65] |
2.9 QLSI cancer module subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
2.9.1 Up to 12 weeks' follow‐up | 1 | 64 | Mean Difference (IV, Random, 95% CI) | ‐0.52 [‐2.24, 1.20] |
Comparison 3. Anxiety.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
3.1 Overall anxiety change | 3 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.1.1 Up to 12 weeks' follow‐up | 2 | 275 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.17 [‐0.41, 0.06] |
3.1.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.16 [‐0.44, 0.12] |
3.1.3 6 months' follow‐up | 1 | 201 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.18 [‐0.49, 0.12] |
3.2 Overall anxiety follow‐up values | 13 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.2.1 Up to 12 weeks' follow‐up | 12 | 1010 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.46 [‐0.81, ‐0.11] |
3.2.2 More than 12 weeks' to less than 6 months' follow‐up | 5 | 440 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.20 [‐0.57, 0.17] |
3.2.3 6 months' follow‐up | 3 | 286 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.44 [‐0.71, ‐0.17] |
3.3 Hospital Anxiety and Depression Scale anxiety subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
3.3.1 Up to 12 weeks' follow‐up | 4 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
3.3.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
3.3.3 6 months' follow‐up | 1 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
3.4 State Trait Anxiety Inventory change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.4.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | ‐1.60 [‐4.40, 1.20] |
3.4.2 6 months' follow‐up | 1 | 201 | Mean Difference (IV, Random, 95% CI) | ‐2.45 [‐6.38, 1.48] |
3.5 State Trait Anxiety Inventory follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.5.1 Up to 12 weeks' follow‐up | 5 | 464 | Mean Difference (IV, Random, 95% CI) | ‐2.96 [‐6.16, 0.24] |
3.5.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 332 | Mean Difference (IV, Random, 95% CI) | ‐1.11 [‐2.30, 0.08] |
3.5.3 6 months' follow‐up | 2 | 257 | Mean Difference (IV, Random, 95% CI) | ‐2.12 [‐3.44, ‐0.81] |
3.6 POMS anxiety subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.6.1 Up to 12 weeks' follow‐up | 2 | 275 | Mean Difference (IV, Random, 95% CI) | ‐1.24 [‐2.82, 0.33] |
3.7 POMS anxiety subscale follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.7.1 Up to 12 weeks' follow‐up | 2 | 150 | Mean Difference (IV, Random, 95% CI) | ‐0.80 [‐1.98, 0.39] |
3.8 Symptom Checklist‐90 Revised anxiety subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.8.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐1.00 [‐2.76, 0.76] |
3.9 Symptom Checklist‐90 Revised phobic anxiety subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.9.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | 0.29 [‐0.38, 0.96] |
3.10 General Health Questionnaire anxiety subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
3.10.1 Up to 12 weeks' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | ‐1.70 [‐4.19, 0.79] |
Comparison 4. Body image/self‐esteem.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
4.1 Overall body image/self‐esteem change | 2 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.1.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Std. Mean Difference (IV, Random, 95% CI) | 0.41 [0.12, 0.69] |
4.1.2 6 months' follow‐up | 2 | 246 | Std. Mean Difference (IV, Random, 95% CI) | 0.20 [‐0.06, 0.47] |
4.2 Overall body image/self‐esteem follow‐up values | 3 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.2.1 Up to 12 weeks' follow‐up | 2 | 237 | Std. Mean Difference (IV, Random, 95% CI) | 0.29 [‐0.06, 0.64] |
4.2.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Std. Mean Difference (IV, Random, 95% CI) | 0.21 [‐0.07, 0.49] |
4.2.3 6 months' follow‐up | 3 | 260 | Std. Mean Difference (IV, Random, 95% CI) | 0.19 [‐0.08, 0.45] |
4.3 Rosenberg self‐esteem change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.3.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | 1.30 [0.51, 2.09] |
4.3.2 6 months' follow‐up | 2 | 246 | Mean Difference (IV, Random, 95% CI) | 0.84 [‐0.27, 1.95] |
4.4 Rosenberg self‐esteem follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.4.1 Up to 12 weeks' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | 1.05 [‐0.35, 2.45] |
4.4.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | 1.41 [‐0.06, 2.87] |
4.4.3 6 months' follow‐up | 2 | 246 | Mean Difference (IV, Random, 95% CI) | 0.79 [‐0.56, 2.15] |
4.5 Body Image Visual Analog Scale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.5.1 Up to 12 weeks' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | 23.00 [‐0.11, 46.11] |
4.5.2 6 months' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | 9.10 [‐23.70, 41.90] |
4.6 Tennessee Self concept subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.6.1 Up to 12 weeks' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | 7.70 [‐23.85, 39.25] |
4.6.2 6 months' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | 5.20 [‐31.26, 41.66] |
4.7 Tennessee physical subscale follow‐up vales | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
4.7.1 Up to 12 weeks' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | 7.70 [‐1.69, 17.09] |
4.7.2 6 months' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | 3.40 [‐7.93, 14.73] |
Comparison 5. Cognitive functioning.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
5.1 Overall cognitive functioning change | 5 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.1.1 Up to 12 weeks' follow‐up | 5 | 342 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.21 [‐0.60, 0.19] |
5.1.2 6 months' follow‐up | 1 | 36 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.23 [‐0.89, 0.43] |
5.2 Overall cognitive functioning follow‐up values | 10 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.2.1 Up to 12 weeks' follow‐up | 9 | 684 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.16 [‐0.31, ‐0.01] |
5.2.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.26 [‐0.79, 0.27] |
5.2.3 6 months' follow‐up | 2 | 65 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.32 [‐0.84, 0.20] |
5.3 QLQ‐C30 cognitive subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.3.1 Up to 12 weeks' follow‐up | 2 | 98 | Mean Difference (IV, Random, 95% CI) | 7.71 [0.21, 15.21] |
5.4 QLQ‐C30 cognitive subscale follow‐up values | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.4.1 Up to 12 weeks' follow‐up | 5 | 411 | Mean Difference (IV, Random, 95% CI) | 5.08 [‐0.37, 10.53] |
5.4.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | 6.04 [‐7.24, 19.31] |
5.4.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | 15.80 [‐3.59, 35.19] |
5.5 FACT‐Cog change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.5.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | ‐8.70 [‐21.05, 3.65] |
5.5.2 6 months' follow‐up | 1 | 36 | Mean Difference (IV, Random, 95% CI) | ‐4.72 [‐18.12, 8.68] |
5.6 FACT‐Cog follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.6.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | ‐10.50 [‐27.02, 6.02] |
5.6.2 6 months' follow‐up | 1 | 36 | Mean Difference (IV, Random, 95% CI) | ‐2.80 [‐23.50, 17.90] |
5.7 POMS confusion subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.7.1 Up to 12 weeks' follow‐up | 1 | 167 | Mean Difference (IV, Random, 95% CI) | 1.20 [‐0.67, 3.07] |
5.8 POMS confusion subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.8.1 Up to 12 weeks' follow‐up | 1 | 128 | Mean Difference (IV, Random, 95% CI) | ‐0.43 [‐1.83, 0.97] |
5.9 QLSI cognitive functioning subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.9.1 Up to 12 weeks' follow‐up | 1 | 68 | Mean Difference (IV, Random, 95% CI) | ‐3.04 [‐8.31, 2.23] |
5.10 MDASI‐T problem remembering subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.10.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐0.37 [‐0.72, ‐0.02] |
5.11 MDASI‐T problem remembering subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
5.11.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐0.67 [‐2.09, 0.75] |
Comparison 6. Depression.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
6.1 Overall depression change | 6 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.1.1 Up to 12 weeks' follow‐up | 4 | 418 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.27 [‐0.61, 0.08] |
6.1.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.04 [‐0.32, 0.24] |
6.1.3 6 months' follow‐up | 2 | 246 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.08 [‐0.35, 0.19] |
6.2 Overall depression follow‐up values | 17 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.2.1 Up to 12 weeks' follow‐up | 15 | 1250 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.55 [‐0.87, ‐0.22] |
6.2.2 More than 12 weeks' to less than 6 months' follow‐up | 5 | 406 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.21 [‐0.43, 0.01] |
6.2.3 6 months' follow‐up | 4 | 452 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.29 [‐0.48, ‐0.09] |
6.3 Centers for Epidemiological Studies Depression change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.3.1 Up to 12 weeks' follow‐up | 1 | 122 | Mean Difference (IV, Random, 95% CI) | ‐2.40 [‐4.05, ‐0.75] |
6.3.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | ‐0.35 [‐2.25, 1.55] |
6.3.3 6 months' follow‐up | 2 | 246 | Mean Difference (IV, Random, 95% CI) | ‐0.78 [‐2.99, 1.42] |
6.4 Centers for Epidemiological Studies Depression Scale follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.4.1 Up to 12 weeks' follow‐up | 4 | 425 | Mean Difference (IV, Random, 95% CI) | ‐0.97 [‐2.31, 0.37] |
6.4.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 279 | Mean Difference (IV, Random, 95% CI) | ‐0.74 [‐3.19, 1.70] |
6.4.3 6 months' follow‐up | 2 | 246 | Mean Difference (IV, Random, 95% CI) | ‐1.95 [‐4.29, 0.40] |
6.5 Hospital Anxiety and Depression Scale depression subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
6.5.1 Up to 12 weeks' follow‐up | 4 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
6.5.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
6.5.3 6 months' follow‐up | 1 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
6.6 Beck Depression Inventory change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.6.1 Up to 12 weeks' follow‐up | 1 | 21 | Mean Difference (IV, Random, 95% CI) | ‐1.30 [‐3.72, 1.12] |
6.7 Beck Depression Inventory follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.7.1 Up to 12 weeks' follow‐up | 5 | 362 | Mean Difference (IV, Random, 95% CI) | ‐3.36 [‐5.87, ‐0.85] |
6.7.2 6 months' follow‐up | 1 | 177 | Mean Difference (IV, Random, 95% CI) | ‐2.40 [‐4.57, ‐0.23] |
6.8 POMS Depression subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.8.1 Up to 12 weeks' follow‐up | 2 | 275 | Mean Difference (IV, Random, 95% CI) | ‐0.98 [‐5.32, 3.35] |
6.9 POMS depression subscale follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.9.1 Up to 12 weeks' follow‐up | 3 | 162 | Mean Difference (IV, Random, 95% CI) | ‐0.23 [‐1.32, 0.86] |
6.9.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐6.30 [‐12.62, 0.02] |
6.10 Symptom Checklist 90 Revised Depression subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.10.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐1.10 [‐3.28, 1.08] |
6.11 General Health Questionnaire Depression subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
6.11.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | ‐0.28 [‐2.65, 2.09] |
Comparison 7. Emotional well‐being/mental health functioning.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
7.1 Overall emotional well‐being/mental health change | 8 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.1.1 Up to 12 weeks' follow‐up | 6 | 418 | Std. Mean Difference (IV, Random, 95% CI) | 0.52 [‐0.04, 1.07] |
7.1.2 6 months' follow‐up | 3 | 202 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.17 [‐0.46, 0.11] |
7.2 Overall emotional well‐being/mental health follow‐up values | 23 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.2.1 Up to 12 weeks' follow‐up | 21 | 1343 | Std. Mean Difference (IV, Random, 95% CI) | 0.05 [‐0.18, 0.28] |
7.2.2 More than 12 weeks' to less than 6 months' follow‐up | 5 | 242 | Std. Mean Difference (IV, Random, 95% CI) | 0.59 [0.12, 1.07] |
7.2.3 6 months' follow‐up | 6 | 350 | Std. Mean Difference (IV, Random, 95% CI) | 0.25 [‐0.08, 0.57] |
7.3 FACT emotional subscale change | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.3.1 Up to 12 weeks' follow‐up | 3 | 167 | Mean Difference (IV, Random, 95% CI) | 0.96 [‐0.20, 2.12] |
7.3.2 6 months' follow‐up | 2 | 81 | Mean Difference (IV, Random, 95% CI) | 0.25 [‐0.81, 1.30] |
7.4 FACT emotion subscale follow‐up values | 7 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.4.1 Up to 12 weeks' follow‐up | 6 | 443 | Mean Difference (IV, Random, 95% CI) | 0.23 [‐0.89, 1.36] |
7.4.2 6 months' follow‐up | 4 | 307 | Mean Difference (IV, Random, 95% CI) | 0.43 [‐0.51, 1.37] |
7.5 QLQ‐C30 change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.5.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | 4.73 [‐19.39, 28.85] |
7.6 QLQ‐C30 emotion subscale follow‐up values | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.6.1 Up to 12 weeks' follow‐up | 5 | 411 | Mean Difference (IV, Random, 95% CI) | 1.74 [‐2.02, 5.49] |
7.6.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | 13.33 [5.19, 21.47] |
7.6.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | 19.10 [6.39, 31.81] |
7.7 FACIT‐E subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.7.1 Up to 12 weeks' follow‐up | 1 | 167 | Mean Difference (IV, Random, 95% CI) | ‐0.69 [‐3.29, 1.91] |
7.8 POMS total mood change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.8.1 Up to 12 weeks' follow‐up | 3 | 315 | Mean Difference (IV, Random, 95% CI) | ‐8.92 [‐10.81, ‐7.03] |
7.9 POMS total mood follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.9.1 Up to 12 weeks' follow‐up | 2 | 168 | Mean Difference (IV, Random, 95% CI) | ‐7.16 [‐12.64, ‐1.69] |
7.10 POMS anger subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.10.1 Up to 12 weeks' follow‐up | 2 | 275 | Mean Difference (IV, Random, 95% CI) | 0.05 [‐1.48, 1.57] |
7.11 POMS anger subscale follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.11.1 Up to 12 weeks' follow‐up | 3 | 268 | Mean Difference (IV, Random, 95% CI) | ‐1.28 [‐3.10, 0.54] |
7.11.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐3.10 [‐6.46, 0.26] |
7.12 MOS SF‐36 Mental Component Score follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.12.1 Up to 12 weeks' follow‐up | 5 | 443 | Mean Difference (IV, Random, 95% CI) | 4.08 [1.11, 7.05] |
7.12.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 115 | Mean Difference (IV, Random, 95% CI) | 7.43 [‐5.64, 20.50] |
7.13 MOS SF‐36 mental health subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.13.1 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | ‐3.23 [‐6.70, 0.24] |
7.14 MOS SF‐36 mental health subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.14.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 2.94 [‐6.31, 12.18] |
7.14.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 56 | Mean Difference (IV, Random, 95% CI) | 0.90 [‐11.86, 13.66] |
7.14.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 2.20 [‐2.11, 6.51] |
7.15 MOS SF‐36 emotional role subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.15.1 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | ‐1.88 [‐8.47, 4.71] |
7.16 MOS SF‐36 emotional role subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.16.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 8.26 [‐1.77, 18.30] |
7.16.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 56 | Mean Difference (IV, Random, 95% CI) | 5.80 [‐21.26, 32.86] |
7.16.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 2.00 [‐3.76, 7.76] |
7.17 Positive and Negative Affect Schedule positivity subscale follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.17.1 Up to 12 weeks' follow‐up | 3 | 160 | Mean Difference (IV, Random, 95% CI) | 3.58 [‐0.11, 7.28] |
7.17.2 6 months' follow‐up | 1 | 177 | Mean Difference (IV, Random, 95% CI) | 3.80 [0.98, 6.62] |
7.18 Positive and Negative Affect Schedule negativity subscale follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.18.1 Up to 12 weeks' follow‐up | 3 | 234 | Mean Difference (IV, Random, 95% CI) | ‐2.58 [‐4.42, ‐0.74] |
7.18.2 6 months' follow‐up | 1 | 177 | Mean Difference (IV, Random, 95% CI) | ‐1.70 [‐3.62, 0.22] |
7.19 Satisfaction with Life change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.19.1 Up to 12 weeks' follow‐up | 1 | 19 | Mean Difference (IV, Random, 95% CI) | 0.42 [‐0.30, 1.14] |
7.20 Satisfaction with Life follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.20.1 Up to 12 weeks' follow‐up | 1 | 96 | Mean Difference (IV, Random, 95% CI) | ‐2.58 [‐5.79, 0.63] |
7.21 Perceived Stress follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.21.1 Up to 12 weeks' follow‐up | 1 | 58 | Mean Difference (IV, Random, 95% CI) | ‐5.50 [‐6.79, ‐4.21] |
7.22 Psychosocial Adjustment to Illness Scale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.22.1 Up to 12 weeks' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | ‐1.20 [‐8.20, 5.80] |
7.22.2 6 months' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | ‐2.90 [‐9.94, 4.14] |
7.23 Brief Symptom Inventory follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.23.1 Up to 12 weeks' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | ‐0.26 [‐0.47, ‐0.05] |
7.23.2 6 months' follow‐up | 1 | 14 | Mean Difference (IV, Random, 95% CI) | ‐0.19 [‐0.47, 0.09] |
7.24 Symptom Distress Scale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.24.1 Up to 12 weeks' follow‐up | 1 | 22 | Mean Difference (IV, Random, 95% CI) | ‐0.35 [‐0.72, 0.02] |
7.25 Symptom Checklist 90 R positive symptom distress subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.25.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐3.00 [‐9.03, 3.03] |
7.26 Symptom Checklist 90 R somatization subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.26.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐2.30 [‐4.37, ‐0.23] |
7.27 Symptom Checklist 90 R obsessive compulsive subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.27.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐1.00 [‐2.81, 0.81] |
7.28 Symptom Checklist 90 R hostility subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.28.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐0.50 [‐1.42, 0.42] |
7.29 Fordyce Happiness Scale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.29.1 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 2.00 [‐12.11, 16.11] |
7.30 Fordyce Happiness Scale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.30.1 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | ‐0.90 [‐10.52, 8.72] |
7.31 National Comprehensive Cancer Network Distress thermometer follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.31.1 Up to 12 weeks' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | ‐1.20 [‐2.30, ‐0.10] |
7.31.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐0.80 [‐1.86, 0.26] |
7.32 Cohen's Stress change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.32.1 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | ‐1.60 [‐5.73, 2.53] |
7.33 Cohen's Stress follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.33.1 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | ‐3.10 [‐6.81, 0.61] |
7.34 General Health Questionnaire follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.34.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | ‐1.47 [‐9.38, 6.44] |
7.35 General Health Questionnaire somatization subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.35.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | ‐0.08 [‐2.27, 2.11] |
7.36 WHO BREF psychological subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.36.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | 0.46 [‐0.96, 1.88] |
7.37 MDASI‐T distress subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.37.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.89 [‐2.49, ‐1.29] |
7.38 MDASI‐T distress subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.38.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.29 [‐3.54, ‐1.04] |
7.39 MDASI‐T mood subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.39.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.42 [‐1.97, ‐0.87] |
7.40 MDASI‐T mood subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.40.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.02 [‐3.12, ‐0.92] |
7.41 MDASI‐T feeling sad subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.41.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.67 [‐2.08, ‐1.26] |
7.42 MDASI‐T feeling sad subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.42.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.41 [‐3.69, ‐1.13] |
7.43 MDASI‐T enjoyment of life subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.43.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.35 [‐2.28, ‐0.42] |
7.44 MDASI‐T enjoyment of life subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.44.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.49 [‐2.46, ‐0.52] |
7.45 QLSI affective functioning subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
7.45.1 Up to 12 weeks' follow‐up | 1 | 67 | Mean Difference (IV, Random, 95% CI) | ‐4.31 [‐10.17, 1.55] |
Comparison 8. Fatigue.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
8.1 Overall fatigue change | 17 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.1.1 Up to 12 weeks' follow‐up | 12 | 971 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.73 [‐1.14, ‐0.31] |
8.1.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 261 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.11 [‐0.37, 0.14] |
8.1.3 6 months' follow‐up | 6 | 614 | Std. Mean Difference (IV, Random, 95% CI) | 0.03 [‐0.14, 0.19] |
8.2 Overall fatigue follow‐up values | 28 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.2.1 Up to 12 weeks' follow‐up | 23 | 1721 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.38 [‐0.57, ‐0.18] |
8.2.2 More than 12 weeks' to less than 6 months' follow‐up | 10 | 838 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.19 [‐0.33, ‐0.05] |
8.2.3 6 months' follow‐up | 7 | 633 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.18 [‐0.35, ‐0.00] |
8.3 FACT‐F subscale change | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.3.1 Up to 12 weeks' follow‐up | 4 | 439 | Mean Difference (IV, Random, 95% CI) | 5.35 [2.13, 8.56] |
8.3.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 223 | Mean Difference (IV, Random, 95% CI) | 1.35 [‐1.09, 3.79] |
8.3.3 6 months' follow‐up | 2 | 237 | Mean Difference (IV, Random, 95% CI) | ‐0.13 [‐2.58, 2.32] |
8.4 FACT‐F follow‐up values | 9 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.4.1 Up to 12 weeks' follow‐up | 9 | 884 | Mean Difference (IV, Random, 95% CI) | 2.79 [0.97, 4.61] |
8.4.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 374 | Mean Difference (IV, Random, 95% CI) | 2.40 [0.17, 4.64] |
8.4.3 6 months' follow‐up | 5 | 471 | Mean Difference (IV, Random, 95% CI) | 2.02 [0.10, 3.95] |
8.5 FACIT‐F subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.5.1 Up to 12 weeks' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 4.16 [‐0.31, 8.63] |
8.5.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 0.01 [‐4.69, 4.71] |
8.6 FACIT‐F subscale follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.6.1 Up to 12 weeks' follow‐up | 3 | 143 | Mean Difference (IV, Random, 95% CI) | 5.68 [3.62, 7.74] |
8.6.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 2.82 [‐3.68, 9.32] |
8.7 QLQ‐C30 change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.7.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | ‐0.36 [‐28.87, 28.15] |
8.8 QLQ‐C30 fatigue subscale follow‐up values | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.8.1 Up to 12 weeks' follow‐up | 5 | 411 | Mean Difference (IV, Random, 95% CI) | ‐7.40 [‐12.19, ‐2.62] |
8.8.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | ‐9.07 [‐18.42, 0.27] |
8.8.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | ‐20.00 [‐41.23, 1.23] |
8.9 Brief Fatigue Inventory change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.9.1 Up to 12 weeks' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | ‐0.07 [‐0.83, 0.69] |
8.9.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | ‐0.78 [‐1.91, 0.35] |
8.10 Brief Fatigue Inventory follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
8.10.1 Up to 12 weeks' follow‐up | 3 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
8.10.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | Mean Difference (IV, Random, 95% CI) | Totals not selected | |
8.11 POMS fatigue subscale change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.11.1 Up to 12 weeks' follow‐up | 3 | 378 | Mean Difference (IV, Random, 95% CI) | ‐0.96 [‐2.39, 0.47] |
8.11.2 6 months' follow‐up | 1 | 103 | Mean Difference (IV, Random, 95% CI) | ‐1.60 [‐11.34, 8.14] |
8.12 POMS fatigue subscale follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.12.1 Up to 12 weeks' follow‐up | 2 | 140 | Mean Difference (IV, Random, 95% CI) | ‐2.63 [‐8.02, 2.76] |
8.12.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐6.70 [‐11.05, ‐2.35] |
8.13 POMS vigor subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.13.1 Up to 12 weeks' follow‐up | 2 | 270 | Mean Difference (IV, Random, 95% CI) | 2.80 [‐3.93, 9.53] |
8.13.2 6 months' follow‐up | 1 | 103 | Mean Difference (IV, Random, 95% CI) | ‐1.10 [‐11.21, 9.01] |
8.14 POMS vigor subscale follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.14.1 Up to 12 weeks' follow‐up | 2 | 140 | Mean Difference (IV, Random, 95% CI) | 3.04 [0.01, 6.08] |
8.14.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | 2.60 [‐1.74, 6.94] |
8.15 Piper Fatigue Scale change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.15.1 Up to 12 weeks' follow‐up | 2 | 40 | Mean Difference (IV, Random, 95% CI) | ‐3.16 [‐5.54, ‐0.77] |
8.15.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 108 | Mean Difference (IV, Random, 95% CI) | ‐0.60 [‐1.62, 0.42] |
8.16 Piper Fatigue Scale follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.16.1 Up to 12 weeks' follow‐up | 1 | 21 | Mean Difference (IV, Random, 95% CI) | ‐2.00 [‐3.73, ‐0.27] |
8.16.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 108 | Mean Difference (IV, Random, 95% CI) | ‐0.20 [‐1.14, 0.74] |
8.17 MOS SF‐36 vitality subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.17.1 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | ‐3.93 [‐7.88, 0.03] |
8.18 MOS SF‐36 vitality subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.18.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 9.64 [5.30, 13.98] |
8.18.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 56 | Mean Difference (IV, Random, 95% CI) | 4.80 [‐10.73, 20.33] |
8.18.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 0.70 [‐4.74, 6.14] |
8.19 Fatigue Severity Scale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.19.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 100 | Mean Difference (IV, Random, 95% CI) | ‐0.30 [‐0.83, 0.23] |
8.20 Fatigue Severity Scale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.20.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 100 | Mean Difference (IV, Random, 95% CI) | ‐0.31 [‐0.84, 0.22] |
8.21 Multidimensional Fatigue Inventory follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.21.1 Up to 12 weeks' follow‐up | 2 | 114 | Mean Difference (IV, Random, 95% CI) | ‐2.09 [‐3.82, ‐0.35] |
8.21.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐2.50 [‐4.34, ‐0.66] |
8.22 Multidimensional Fatigue Inventory physical fatigue subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.22.1 Up to 12 weeks' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | ‐1.70 [‐3.62, 0.22] |
8.22.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐2.60 [‐4.62, ‐0.58] |
8.23 Multidimensional Fatigue Inventory reduced activation subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.23.1 Up to 12 weeks' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | ‐0.60 [‐2.41, 1.21] |
8.23.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | ‐0.50 [‐2.38, 1.38] |
8.24 Multidimensional Fatigue Inventory reduced motivation subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.24.1 Up to 12 weeks' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | ‐0.50 [‐2.02, 1.02] |
8.24.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | ‐0.40 [‐1.93, 1.13] |
8.25 Multidimensional Fatigue Inventory mental fatigue subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.25.1 Up to 12 weeks' follow‐up | 1 | 81 | Mean Difference (IV, Random, 95% CI) | ‐0.60 [‐2.50, 1.30] |
8.25.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 80 | Mean Difference (IV, Random, 95% CI) | 0.00 [‐1.78, 1.78] |
8.26 Schwartz Fatigue follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.26.1 6 months' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | 0.50 [‐4.26, 5.26] |
8.27 LASA change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.27.1 Up to 12 weeks' follow‐up | 1 | 103 | Mean Difference (IV, Random, 95% CI) | ‐1.50 [‐12.30, 9.30] |
8.27.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 103 | Mean Difference (IV, Random, 95% CI) | ‐3.00 [‐13.33, 7.33] |
8.28 MDASI‐T fatigue subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.28.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.11 [‐2.57, ‐1.65] |
8.29 MDASI‐T fatigue subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
8.29.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.95 [‐3.03, ‐0.87] |
Comparison 9. General health perspective.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
9.1 Overall general health change | 4 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.1.1 Up to 12 weeks' follow‐up | 2 | 78 | Std. Mean Difference (IV, Random, 95% CI) | 1.03 [‐1.16, 3.21] |
9.1.2 6 months' follow‐up | 3 | 202 | Std. Mean Difference (IV, Random, 95% CI) | 0.09 [‐0.20, 0.37] |
9.2 Overall general health perspective follow‐up values | 7 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.2.1 Up to 12 weeks' follow‐up | 6 | 242 | Std. Mean Difference (IV, Random, 95% CI) | 0.33 [0.01, 0.64] |
9.2.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 56 | Std. Mean Difference (IV, Random, 95% CI) | 0.20 [‐0.32, 0.73] |
9.2.3 6 months' follow‐up | 2 | 81 | Std. Mean Difference (IV, Random, 95% CI) | 0.05 [‐0.43, 0.54] |
9.3 MOS SF‐36 general health change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.3.1 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | 0.83 [‐1.85, 3.52] |
9.4 MOS SF‐36 general health subscale follow‐up values | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.4.1 Up to 12 weeks' follow‐up | 1 | 57 | Mean Difference (IV, Random, 95% CI) | 11.20 [‐0.66, 23.06] |
9.4.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 56 | Mean Difference (IV, Random, 95% CI) | 4.60 [‐7.06, 16.26] |
9.4.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 2.40 [‐2.48, 7.28] |
9.5 WHO BREF follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.5.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | 0.28 [‐0.23, 0.79] |
9.6 Ferrans and Powers health and functioning subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.6.1 Up to 12 weeks' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | 2.30 [‐4.03, 8.63] |
9.7 Single question change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.7.1 Up to 12 weeks' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | ‐0.05 [‐0.47, 0.37] |
9.7.2 6 months' follow‐up | 1 | 36 | Mean Difference (IV, Random, 95% CI) | 0.04 [‐0.35, 0.43] |
9.8 Single question follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.8.1 Up to 12 weeks' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | ‐0.30 [‐0.76, 0.16] |
9.8.2 6 months' follow‐up | 1 | 36 | Mean Difference (IV, Random, 95% CI) | ‐0.20 [‐0.79, 0.39] |
9.9 MDASI‐T general activity subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.9.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.72 [‐2.23, ‐1.21] |
9.10 MDASI‐T general activity subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
9.10.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.57 [‐2.74, ‐0.40] |
Comparison 10. Pain.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
10.1 Overall pain change | 5 | Std. Mean Difference (IV, Random, 95% CI) | Totals not selected | |
10.1.1 Up to 12 weeks' follow‐up | 2 | Std. Mean Difference (IV, Random, 95% CI) | Totals not selected | |
10.1.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | Std. Mean Difference (IV, Random, 95% CI) | Totals not selected | |
10.1.3 6 months' follow‐up | 2 | Std. Mean Difference (IV, Random, 95% CI) | Totals not selected | |
10.2 Overall pain follow‐up values | 11 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.2.1 Up to 12 weeks' follow‐up | 9 | 598 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.20 [‐0.41, 0.00] |
10.2.2 More than 12 weeks' to less than 6 months' follow‐up | 5 | 309 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.17 [‐0.39, 0.06] |
10.2.3 6 months' follow‐up | 1 | 29 | Std. Mean Difference (IV, Random, 95% CI) | ‐1.05 [‐1.83, ‐0.26] |
10.3 QLQ‐C30 change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.3.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | 3.11 [‐15.93, 22.15] |
10.4 QLQ‐C30 pain follow‐up values | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.4.1 Up to 12 weeks' follow‐up | 5 | 411 | Mean Difference (IV, Random, 95% CI) | ‐3.31 [‐7.54, 0.92] |
10.4.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | ‐7.26 [‐15.82, 1.29] |
10.4.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | ‐21.20 [‐36.86, ‐5.54] |
10.5 MOS SF‐36 bodily pain subscale change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.5.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 126 | Mean Difference (IV, Random, 95% CI) | ‐2.41 [‐11.29, 6.47] |
10.5.2 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | 1.43 [‐3.53, 6.40] |
10.6 MOS SF‐36 bodily pain follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.6.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 2.46 [‐2.24, 7.16] |
10.6.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 182 | Mean Difference (IV, Random, 95% CI) | ‐3.13 [‐10.11, 3.86] |
10.6.3 6 months' follow‐up | 0 | 0 | Mean Difference (IV, Random, 95% CI) | Not estimable |
10.7 Visual Analog Scale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.7.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | ‐4.60 [‐18.52, 9.32] |
10.8 MDASI‐T pain subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.8.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.66 [‐3.17, ‐2.15] |
10.9 MDASI‐T pain subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
10.9.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.22 [‐3.51, ‐0.93] |
Comparison 11. Physical functioning.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
11.1 Overall physical function change | 11 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.1.1 Up to 12 weeks' follow‐up | 8 | 540 | Std. Mean Difference (IV, Random, 95% CI) | 0.69 [0.16, 1.22] |
11.1.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 126 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.18 [‐0.53, 0.17] |
11.1.3 6 months' follow‐up | 4 | 305 | Std. Mean Difference (IV, Random, 95% CI) | 0.28 [‐0.00, 0.55] |
11.2 Overall physical function follow‐up values | 21 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.2.1 Up to 12 weeks' follow‐up | 18 | 1272 | Std. Mean Difference (IV, Random, 95% CI) | 0.28 [0.11, 0.45] |
11.2.2 More than 12 weeks' to less than 6 months' follow‐up | 6 | 368 | Std. Mean Difference (IV, Random, 95% CI) | 0.33 [‐0.17, 0.82] |
11.2.3 6 months' follow‐up | 5 | 336 | Std. Mean Difference (IV, Random, 95% CI) | 0.29 [0.07, 0.50] |
11.3 FACT‐P subscale change | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.3.1 Up to 12 weeks' follow‐up | 3 | 167 | Mean Difference (IV, Random, 95% CI) | 2.31 [0.65, 3.98] |
11.3.2 6 months' follow‐up | 2 | 81 | Mean Difference (IV, Random, 95% CI) | 1.01 [‐1.24, 3.25] |
11.4 FACT‐P subscale follow‐up values | 8 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.4.1 Up to 12 weeks' follow‐up | 7 | 539 | Mean Difference (IV, Random, 95% CI) | 0.34 [‐0.67, 1.35] |
11.4.2 6 months' follow‐up | 4 | 307 | Mean Difference (IV, Random, 95% CI) | 1.17 [0.14, 2.19] |
11.5 FACIT‐F change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.5.1 Up to 12 weeks' follow‐up | 1 | 167 | Mean Difference (IV, Random, 95% CI) | ‐0.40 [‐9.67, 8.87] |
11.6 QLQ‐C30 Physical subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.6.1 Up to 12 weeks' follow‐up | 2 | 63 | Mean Difference (IV, Random, 95% CI) | 5.32 [‐0.16, 10.80] |
11.7 QLQ‐C30 Physical subscale follow‐up values | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.7.1 Up to 12 weeks' follow‐up | 5 | 411 | Mean Difference (IV, Random, 95% CI) | 3.72 [0.61, 6.84] |
11.7.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | 8.01 [0.89, 15.12] |
11.7.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | 12.70 [‐1.38, 26.78] |
11.8 MOS SF‐36 Physical component score follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.8.1 Up to 12 weeks' follow‐up | 5 | 443 | Mean Difference (IV, Random, 95% CI) | 3.96 [0.99, 6.94] |
11.8.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 115 | Mean Difference (IV, Random, 95% CI) | 8.60 [‐3.38, 20.58] |
11.8.3 6 months' follow‐up | 0 | 0 | Mean Difference (IV, Random, 95% CI) | Not estimable |
11.9 MOS SF‐36 Physical Functioning subscale change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.9.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 126 | Mean Difference (IV, Random, 95% CI) | ‐0.40 [‐6.43, 5.63] |
11.9.2 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | 3.60 [‐5.64, 12.83] |
11.10 MOS SF‐36 Physical Functioning subscale follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.10.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 4.04 [0.63, 7.46] |
11.10.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 182 | Mean Difference (IV, Random, 95% CI) | ‐0.69 [‐8.84, 7.46] |
11.10.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | ‐0.90 [‐5.19, 3.39] |
11.11 MOS SF‐36 role physical change | 3 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.11.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 126 | Mean Difference (IV, Random, 95% CI) | ‐8.71 [‐25.74, 8.32] |
11.11.2 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | ‐0.37 [‐7.26, 6.52] |
11.12 MOS SF‐36 role physical follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.12.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 11.24 [3.10, 19.39] |
11.12.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 182 | Mean Difference (IV, Random, 95% CI) | ‐6.92 [‐28.18, 14.34] |
11.12.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 2.20 [‐5.02, 9.42] |
11.13 LASA change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.13.1 Up to 12 weeks' follow‐up | 1 | 103 | Mean Difference (IV, Random, 95% CI) | 3.80 [‐5.75, 13.35] |
11.13.2 6 months' follow‐up | 1 | 103 | Mean Difference (IV, Random, 95% CI) | ‐0.60 [‐10.19, 8.99] |
11.14 WHO BREF physical subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.14.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | 2.90 [1.44, 4.36] |
11.15 MDASI‐T Symptom Severity change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.15.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.47 [‐1.76, ‐1.18] |
11.16 MDASI‐T Symptom Severity follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.16.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.61 [‐2.50, ‐0.72] |
11.17 QLSI physical health subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
11.17.1 Up to 12 months' follow‐up | 1 | 64 | Mean Difference (IV, Random, 95% CI) | ‐0.31 [‐4.42, 3.80] |
Comparison 12. Role function.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
12.1 Overall role function change | 8 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.1.1 Up to 12 weeks' follow‐up | 7 | 439 | Std. Mean Difference (IV, Random, 95% CI) | 0.48 [0.07, 0.90] |
12.1.2 6 months' follow‐up | 2 | 81 | Std. Mean Difference (IV, Random, 95% CI) | 0.07 [‐0.46, 0.60] |
12.2 Overall role function follow‐up values | 17 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.2.1 Up to 12 weeks' follow‐up | 15 | 1100 | Std. Mean Difference (IV, Random, 95% CI) | 0.17 [0.00, 0.34] |
12.2.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Std. Mean Difference (IV, Random, 95% CI) | 0.32 [‐0.37, 1.00] |
12.2.3 6 months' follow‐up | 5 | 336 | Std. Mean Difference (IV, Random, 95% CI) | 0.32 [0.03, 0.61] |
12.3 FACT role function subscale change | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.3.1 Up to 12 weeks' follow‐up | 4 | 188 | Mean Difference (IV, Random, 95% CI) | 2.25 [‐0.16, 4.66] |
12.3.2 6 months' follow‐up | 2 | 81 | Mean Difference (IV, Random, 95% CI) | 0.43 [‐1.76, 2.62] |
12.4 FACT role function subscale follow‐up values | 9 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.4.1 Up to 12 weeks' follow‐up | 8 | 573 | Mean Difference (IV, Random, 95% CI) | 1.41 [‐0.03, 2.86] |
12.4.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 30 | Mean Difference (IV, Random, 95% CI) | 6.00 [1.96, 10.04] |
12.4.3 6 months' follow‐up | 5 | 336 | Mean Difference (IV, Random, 95% CI) | 1.53 [0.15, 2.91] |
12.5 QLQ‐C30 change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.5.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | 2.03 [‐20.58, 24.64] |
12.6 QLQ‐C30 function subscale follow‐up values | 5 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.6.1 Up to 12 weeks' follow‐up | 4 | 367 | Mean Difference (IV, Random, 95% CI) | 4.90 [‐0.88, 10.67] |
12.6.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | 12.82 [‐12.71, 38.36] |
12.6.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | 26.70 [4.32, 49.08] |
12.7 FACIT function subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.7.1 Up to 12 weeks' follow‐up | 1 | 167 | Mean Difference (IV, Random, 95% CI) | 0.34 [‐1.44, 2.12] |
12.8 WHO BREF environmental subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.8.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | ‐0.18 [‐2.07, 1.71] |
12.9 Ferrans and Power family subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.9.1 Up to 12 weeks' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | ‐0.40 [‐2.45, 1.65] |
12.10 Symptom Checklist 90 R interpersonal sensitivity subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.10.1 Up to 12 weeks' follow‐up | 1 | 59 | Mean Difference (IV, Random, 95% CI) | ‐0.20 [‐1.07, 0.67] |
12.11 MDASI‐T relations with other people subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.11.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.01 [‐3.02, ‐1.00] |
12.12 MDASI‐T relations with other people subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.12.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.52 [‐2.63, ‐0.41] |
12.13 MDASI‐T work subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.13.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.28 [‐2.87, ‐1.69] |
12.14 MDASI‐T work subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.14.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐1.54 [‐2.58, ‐0.50] |
12.15 QLSI marital life subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
12.15.1 Up to 12 weeks' follow‐up | 1 | 58 | Mean Difference (IV, Random, 95% CI) | 3.64 [‐1.41, 8.69] |
Comparison 13. Sleep.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
13.1 Overall sleep change | 3 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.1.1 Up to 12 weeks' follow‐up | 3 | 122 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.55 [‐1.95, 0.85] |
13.1.2 6 months' follow‐up | 1 | 36 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.11 [‐0.76, 0.55] |
13.2 Overall sleep follow‐up values | 12 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.2.1 Up to 12 weeks' follow‐up | 12 | 650 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.40 [‐0.67, ‐0.14] |
13.2.2 More than 12 weeks' to less than 6 months' follow‐up | 4 | 225 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.36 [‐0.86, 0.14] |
13.2.3 6 months' follow‐up | 1 | 29 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.69 [‐1.45, 0.07] |
13.3 Pittsburgh Sleep Quality Index change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.3.1 Up to 12 weeks' follow‐up | 1 | 38 | Mean Difference (IV, Random, 95% CI) | 0.15 [‐2.21, 2.51] |
13.3.2 6 months' follow‐up | 1 | 36 | Mean Difference (IV, Random, 95% CI) | ‐0.26 [‐1.75, 1.23] |
13.4 Pittsburgh Sleep Quality Index follow‐up values | 7 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.4.1 Up to 12 weeks' follow‐up | 7 | 434 | Mean Difference (IV, Random, 95% CI) | ‐1.67 [‐2.88, ‐0.46] |
13.4.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 115 | Mean Difference (IV, Random, 95% CI) | ‐1.73 [‐5.18, 1.71] |
13.5 QLQ‐C30 insomnia subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.5.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | 11.52 [‐6.51, 29.55] |
13.6 QLQ‐C30 insomnia subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.6.1 Up to 12 weeks' follow‐up | 4 | 176 | Mean Difference (IV, Random, 95% CI) | ‐5.68 [‐15.99, 4.63] |
13.6.2 More than 12 weeks' to less than 6 months' follow‐up | 2 | 110 | Mean Difference (IV, Random, 95% CI) | ‐5.48 [‐16.82, 5.86] |
13.6.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | ‐17.50 [‐36.67, 1.67] |
13.7 MDASI‐T disturbed sleep subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.7.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐0.83 [‐1.06, ‐0.60] |
13.8 MDASI‐T disturbed sleep subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
13.8.1 Up to 12 weeks' follow‐up | 1 | 40 | Mean Difference (IV, Random, 95% CI) | ‐2.14 [‐3.85, ‐0.43] |
Comparison 14. Social functioning.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
14.1 Overall social functioning change | 7 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.1.1 Up to 12 weeks' follow‐up | 5 | 378 | Std. Mean Difference (IV, Random, 95% CI) | 0.54 [0.03, 1.05] |
14.1.2 6 months' follow‐up | 3 | 247 | Std. Mean Difference (IV, Random, 95% CI) | ‐0.07 [‐0.42, 0.29] |
14.2 Overall social functioning follow‐up values | 18 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.2.1 Up to 12 weeks' follow‐up | 16 | 1164 | Std. Mean Difference (IV, Random, 95% CI) | 0.16 [0.04, 0.27] |
14.2.2 More than 12 weeks' to less than 6 months' follow‐up | 4 | 183 | Std. Mean Difference (IV, Random, 95% CI) | 0.09 [‐0.26, 0.44] |
14.2.3 6 months' follow‐up | 5 | 381 | Std. Mean Difference (IV, Random, 95% CI) | 0.24 [0.03, 0.44] |
14.3 FACT social subscale change | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.3.1 Up to 12 weeks' follow‐up | 3 | 167 | Mean Difference (IV, Random, 95% CI) | 2.88 [1.94, 3.83] |
14.3.2 6 months' follow‐up | 2 | 81 | Mean Difference (IV, Random, 95% CI) | 1.25 [‐3.28, 5.79] |
14.4 FACT social subscale follow‐up values | 8 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.4.1 Up to 12 weeks' follow‐up | 7 | 539 | Mean Difference (IV, Random, 95% CI) | 0.79 [‐0.06, 1.63] |
14.4.2 6 months' follow‐up | 4 | 307 | Mean Difference (IV, Random, 95% CI) | 1.15 [0.04, 2.25] |
14.5 QLQ‐C30 change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.5.1 Up to 12 weeks' follow‐up | 1 | 44 | Mean Difference (IV, Random, 95% CI) | 3.34 [‐22.39, 29.07] |
14.6 QLQ‐C30 social subscale follow‐up values | 6 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.6.1 Up to 12 weeks' follow‐up | 5 | 411 | Mean Difference (IV, Random, 95% CI) | 3.67 [‐0.87, 8.20] |
14.6.2 More than 12 weeks' to less than 6 months' follow‐up | 3 | 127 | Mean Difference (IV, Random, 95% CI) | 3.58 [‐11.78, 18.94] |
14.6.3 6 months' follow‐up | 1 | 29 | Mean Difference (IV, Random, 95% CI) | 18.30 [‐7.41, 44.01] |
14.7 FACIT social subscale change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.7.1 Up to 12 weeks' follow‐up | 1 | 167 | Mean Difference (IV, Random, 95% CI) | ‐0.15 [‐1.60, 1.30] |
14.8 MOS SF‐36 social function subscale change | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.8.1 6 months' follow‐up | 2 | 166 | Mean Difference (IV, Random, 95% CI) | ‐2.49 [‐7.40, 2.42] |
14.9 MOS SF‐36 social function subscale follow‐up values | 4 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.9.1 Up to 12 weeks' follow‐up | 3 | 345 | Mean Difference (IV, Random, 95% CI) | 2.98 [‐1.76, 7.72] |
14.9.2 More than 12 weeks' to less than 6 months' follow‐up | 1 | 56 | Mean Difference (IV, Random, 95% CI) | ‐1.00 [‐18.60, 16.60] |
14.9.3 6 months' follow‐up | 1 | 45 | Mean Difference (IV, Random, 95% CI) | 1.30 [‐4.66, 7.26] |
14.10 WHO BREF social function subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.10.1 Up to 12 weeks' follow‐up | 1 | 37 | Mean Difference (IV, Random, 95% CI) | 0.96 [‐0.28, 2.20] |
14.11 Ferrans and Power social economic subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.11.1 Up to 12 weeks' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | ‐3.00 [‐7.48, 1.48] |
14.12 General Health Questionnaire social dysfunction subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.12.1 More than 12 weeks' to less than 6 months' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | 0.60 [‐1.41, 2.61] |
14.13 QLSI social and familial functioning subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
14.13.1 Up to 12 weeks' follow‐up | 1 | 67 | Mean Difference (IV, Random, 95% CI) | ‐0.18 [‐2.37, 2.01] |
Comparison 15. Spiritual functioning.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
15.1 Overall spiritual function change | 1 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
15.1.1 Up to 12 weeks' follow‐up | 1 | 167 | Std. Mean Difference (IV, Random, 95% CI) | 0.01 [‐0.30, 0.31] |
15.2 Overall spiritual function follow‐up values | 3 | Std. Mean Difference (IV, Random, 95% CI) | Subtotals only | |
15.2.1 Up to 12 weeks' follow‐up | 3 | 172 | Std. Mean Difference (IV, Random, 95% CI) | 0.46 [0.14, 0.77] |
15.3 FACT ‐Sp change | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
15.3.1 Up to 12 weeks' follow‐up | 1 | 167 | Mean Difference (IV, Random, 95% CI) | 0.05 [‐2.89, 2.99] |
15.4 FACIT‐Sp follow‐up values | 2 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
15.4.1 Up to 12 weeks' follow‐up | 2 | 155 | Mean Difference (IV, Random, 95% CI) | 4.03 [0.81, 7.25] |
15.5 Ferrans and Power psychological/spiritual subscale follow‐up values | 1 | Mean Difference (IV, Random, 95% CI) | Subtotals only | |
15.5.1 Up to 12 weeks' follow‐up | 1 | 17 | Mean Difference (IV, Random, 95% CI) | 3.80 [‐0.26, 7.86] |
Characteristics of studies
Characteristics of included studies [ordered by study ID]
Adamsen 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 269; 135 to the exercise group and 134 to the control group Study start and stop dates: participants recruited from March 2004 to March 2007 Length of intervention: 6 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: various Participants had 21 different cancer diagnoses, including 17 solid tumors (i.e. cancer of the breast, bowel, ovaries, testes, esophagus, brain, cervix, pharynx, pancreas, stomach, and other), and 4 hematologic malignancies (i.e. Hodgkin lymphoma, NHL(Non‐Hodgkin’s lymphoma), acute leukemia, and chronic leukemia) Time since cancer diagnosis, median (range) days:
Time beyond active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest, ability to exercise, or both:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD) years
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level; completed secondary school or higher, n (%)
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history; physical activity level pre‐illness, n (%)
On hormone therapy: not reported |
|
Interventions | 135 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the exercise intervention: the intervention activities were equivalent to a total of 43 metabolic equivalent of task (MET) hours per week Frequency: 9 hours per week Duration of individual sessions: 90 minutes for high intensity, 30 minutes for low‐intensity exercise Duration of exercise program: 6 weeks Total number of exercise sessions: 24 sessions (3 sessions per week for 6 weeks) Format: group Facility: facility based Professionally led: professionally led by trained nurse specialists and physical therapists Adherence: 70.8% 134 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome included:
Other outcomes included subscales of the QLQ C‐30, including:
Additional HRQoL outcomes included subscales from the MOS SF‐36, including:
Outcomes were measured at baseline and at 6 weeks:
Subgroup analysis: none conducted or specified Adverse events: not reported |
|
Notes | Country: Denmark Funding: The Lundbeck Foundation, The Novo Nordic Foundation, The Egmont Foundation, The Danish Cancer Society, The Svend Andersen Foundation, The Aase and Ejnar Danielsen Foundation, The Beckett Foundation, The Wedell‐Wedellsborg Foundation, The Hede Nielsen Family Foundation, The Gangsted Foundation, Copenhagen University Hospital |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Randomization was done by computer (CITMAS) |
Allocation concealment (selection bias) | Low risk | The allocation sequence was executed by the clinical research unit |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Missing outcome data were assumed to be missing at random |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | High risk | Since the control group was allowed to engage in or increase levels of physical activity, this could bias the effect of the overall intervention. Further, it is unclear whether there was a possibility of contamination of the control group |
Arbane 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 51; 25 to the exercise group and 26 to the control group Study start and stop dates: not reported Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: lung cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (range) years: 64 (32 to 82) years Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | Number of participants assigned to the exercise intervention: not reported. The intervention included:
Type exercise (aerobic/anaerobic): unclear Intensity of the experimental exercise intervention: not reported Frequency: twice per day at the clinic and monthly home visits Duration of individual sessions: not reported Duration of exercise program: 12 weeks Total number of exercise sessions: not reported Format: unclear, appears to be individual Facility: unclear Professionally led: not reported Adherence: not reported Number of participants assigned to control group: not reported. The control included:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Other outcomes included:
Outcomes were measured at baseline 5 days and 12 weeks. The number of participants in groups at time points was not reported Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: UK Funding: none reported Published as abstract |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Insufficient details provided to determine whether there was any attrition |
Selective reporting (reporting bias) | Unclear risk | Insufficient details provided to assess whether there was selective outcome reporting |
Other bias | High risk | The small sample size, lack of description of the recruitment and selection of study participants, lack of identification of a primary outcome could give rise to additional biases |
Banerjee 2007.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 68; 35 to the exercise group and 33 to the control group Study start and stop dates: not reported Length of intervention: 6 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Stage, n (%)
Time since cancer diagnosis: not reported Time in active treatment: all patients received 6 weeks of radiation therapy for a total dosage of 50.4 Gy. Some patients apparently received concurrent chemotherapy but how many is not stated since previous chemotherapy and current concomitant chemotherapy are not distinguished Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: all required to have completed 'high school' SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 35 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: not reported Frequency: not reported Duration of individual sessions: 90 minutes Duration of exercise program: 6 weeks Total number of exercise sessions: not reported Format: group Facility: facility and home practice Professionally led: professionally led by yoga instructors and trainers Adherence: not reported 33 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome identified. Outcomes included:
Outcomes were measured at baseline and at 6 weeks:
Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: India Funding: Atomic Energy Radiation Board of India; SVYASA University Bangalore, India; National Medical Research Council, Singapore |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer‐generated random number table |
Allocation concealment (selection bias) | Low risk | Group assignments sent to clinics of the recruiting hospitals |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | All 10 attritions experienced in the study were from the control group. The attrition occurred either immediately after random assignment or during the course of the study |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Battaglini 2008.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 20, but the numbers assigned to the exercise and control groups not reported Study start and stop dates: not reported Length of intervention: 16 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | The number of participants assigned to the exercise intervention: not reported. The exercise intervention included:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: 40% to 60% of predicted maximum exercise capacity Frequency: twice per week Duration of individual sessions: 60 minutes Duration of exercise program: 16 weeks Total number of exercise sessions: 32 sessions Format: group Facility: facility based Professionally led by an undergraduate or graduate cancer exercise specialist Adherence: not reported The number of participants assigned to the control intervention was not reported and the control intervention was not described Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline; postsurgery; at treatments 1, 2, and 3; and at end of study, but the number of participants at each time point by treatment group was not reported Subgroup analysis: none reported Adverse events: none reported |
|
Notes | Country: US Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | There was no description of missing outcome data or attrition from the trial |
Selective reporting (reporting bias) | Unclear risk | Owing to a lack of sufficient description of the outcomes, it is unclear whether there is selective reporting of the outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Bourke 2011.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 50; 25 to the exercise group and 25 to the control group Study start and stop dates: not reported Length of intervention: 12 weeks Length of follow‐up: 6 months |
|
Participants | Type cancer: prostate cancer, nonlocalized, with metastatic disease
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history, exercise behavior (Godin LSI), mean (SD):
On hormone therapy: all on androgen suppression therapy |
|
Interventions | 25 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention:
Frequency:
Duration of individual sessions: 30 minutes each Duration of exercise program: 12 weeks Total number of exercise sessions: 278 sessions Format: individual; unclear if group "dedicated suite" Facility: facility and home based Professionally led by an exercise physiologist Adherence:
25 participants assigned to control group, including:
Contamination of control group: control group showed activity of 17.4 Godin LSI points at end of intervention (12 weeks) |
|
Outcomes | No primary outcome was identified. Outcomes included:
Outcomes were measured at baseline, 12 weeks, and 6 months:
Subgroup analysis: none reported Adverse events: drop‐outs owing to health problems were noted in 4 men in the exercise group (2 because of cardiac issues) and 5 men in the control group |
|
Notes | Country: US Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "Randomization was carried out remotely using nQuery statistical software" |
Allocation concealment (selection bias) | Low risk | " … without disclosure of the sequence to the researcher responsible for the running of the trial until after completion of the baseline assessments" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | "Physiologic and functional fitness outcomes were assessed by a trained technician blinded to group allocation but blinding was not possible for those completing the HRQoL questionnaires" |
Incomplete outcome data (attrition bias) All outcomes | High risk | In the exercise group, 4 participants at 12 weeks and 6 at 6 months were lost to follow‐up. In the control group, 3 at 12 weeks and 9 at 6 months were lost to follow‐up. However, the investigators used the SPSS Expectation Maximization procedure to impute missing values so ITT analyses could be done |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Brown 2006.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 115; 57 to the exercise group and 58 to the control group Study start and stop dates: not reported Length of intervention: 4 weeks Length of follow‐up: 4, 7, and 27 weeks after baseline |
|
Participants | Type cancer, n (%): various
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, n (%):
Age at cancer diagnosis: not reported Ethnicity/race: all patients were white or of unknown ethnicity Education level: not reported SES: not reported Employment status, currently employed, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 57 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: not reported Frequency: twice per week Duration of individual sessions: 90 minutes Duration of exercise program: 4 weeks Total number of exercise sessions: 8 sessions Format: group Facility: facility Professionally led by a physical therapist Adherence: 78% of participants attended all sessions, 92% attended all but 1 session. No subject missed more than 2 sessions 58 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline, 4 weeks, 7 weeks, and 27 weeks:
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: US Funding: Linse Bock Foundation, Saint Mary's Hospital Sponsorship Board |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | The number of participants who withdrew from the study was not reported beyond the 4‐week period. An ITT analysis was not completed |
Selective reporting (reporting bias) | High risk | The authors describe some QoL measures in the methods for which no results are presented |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Cadmus 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 75; 37 to the exercise group and 38 to the control group Study start and stop dates: March 2004 to July 2006 Length of intervention: 6 months Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer, Stage 0 to IIIA Time since cancer diagnosis, mean (SD) weeks:
Time in active treatment: scheduled for chemotherapy or radiation therapy or within first 2 weeks of starting chemotherapy or radiation therapy Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, %:
Education level, %:
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy:
BMI, mean (SD):
Body fat, mean (SD):
|
|
Interventions | 25 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): unclear, up to the women's choice Intensity of the experimental exercise intervention: 60% to 80% of predicted maximal HR Frequency: 5 days per week Duration of individual sessions: 30 minutes Duration of exercise program: 6 months Total number of exercise sessions: 120 sessions Format: individual Facility: home Professionally led by "staff" Adherence, mean (SD) minutes of activity per week:
25 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and 6 months:
Subgroups: HRQoL level at baseline, by weight loss, or body fat, or both Adverse events: none reported |
|
Notes | Country: US Funding: Lance Armstrong Foundation, American Cancer Society, Susan G. Komen. National Institutes of Health |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer‐generated randomization code |
Allocation concealment (selection bias) | Low risk | "The randomization code was obtained by the principal investigator (who was not involved in recruitment or data collection) only after baseline measures for that individual had been completed and staff conducting clinic visits did not have access to the randomization program" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | ITT analysis performed and baseline values were carried forward for the 5 women who had missing 6‐month data |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Caldwell 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 25; 13 to the exercise group and 12 to the control group Study start and stop dates: not reported Length of intervention: 12 weeks Length of follow‐up: 6 months |
|
Participants | Type cancer: breast cancer Stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment: completed surgery, and scheduled to receive chemotherapy Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, n (%):
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 13 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: mild Frequency: 3 to 5 times per week Duration of individual sessions: as per participant ability and endurance Duration of exercise program: 12 weeks Total number of exercise sessions: 72 to 100 sessions Format: individual Facility: home Professionally led by a physical therapist Adherence: not reported 12 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline and 6 months. 3 participants were not able to start the study owing to changes in treatment plan and were not included in any analysis:
Subgroup analysis: not reported Adverse events: not reported |
|
Notes | Country: US Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "...computerized randomization program..." |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were not conducted on an ITT basis and the treatment of missing data was not described. There was substantial attrition from the trial, especially in the intervention arm The number of participants who withdrew from the study was not reported beyond the 4‐week period |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Campbell 2005.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 22; 12 to the exercise group and 10 to the control group Study start and stop dates: not reported Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES, Carstairs Deprivation Index:
Employment status: not reported Comorbidities: not reported Past exercise history, mean minutes of physical activity per week (SD):
On hormone therapy: not reported |
|
Interventions | 12 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: moderate, 60% to 75% age‐adjusted HR maximum Frequency: twice per week Duration of individual sessions: not reported Duration of exercise program: 12 weeks Total number of exercise sessions: 24 sessions Format: group Facility: facility Professionally led: unclear Adherence: 10 of 12 women completed that 12‐week intervention. Participants completed an average of 70% of the total number of sessions 10 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other HRQoL outcomes included:
Other outcomes included:
Outcomes were measured at baseline and 12 weeks:
Subgroup analysis: none reported Adverse events: none reported |
|
Notes | Country: UK/Scotland Funding: Greater Glasgow NHS Trust |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were not conducted on an ITT basis and the treatment of missing data was not described |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Chandwani 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 71, but 10 withdrew leaving 61; 30 to the exercise group and 31 to the control group Study start and stop dates: not reported Length of intervention: 6 weeks Length of follow‐up: 3 months |
|
Participants | Type cancer: breast cancer Stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD, range):
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, n (%):
SES: not reported Employment status, n (%):
Comorbidities: not reported Past exercise history: 4 patients in the exercise and 2 in the control group reported practicing yoga "currently" and 7 in the exercise and 9 in the control group practiced in the past On hormone therapy: not reported |
|
Interventions | The number of participants assigned to the exercise intervention was unclear because 10 participants withdrew and their assignment was not reported. Of the remaining participants 30 were assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: mild Frequency: twice per week plus encouragement to practice daily at home Duration of individual sessions: 60 minutes Duration of exercise program: 6 weeks Total number of exercise sessions: 12 sessions Format: although designed to be group, the program ended up with most women having 1‐on‐1 sessions Facility: facility with encouragement to practice at home Professionally led by VYASA trained teachers Adherence: 15 participants (50%) attended all 12 classes; 8 (28%) attended 11 classes; and 1 (3%) attended 10 classes. 8 participants (28%) reported practicing yoga outside of class every day, 12 (40%) reported practicing more than twice per week, 8 (28%) reported practicing twice per week, and 1 (3%) reported not practicing outside the classes The number of participants assigned to the control intervention was unclear because 10 participants withdrew and their assignment was not reported. Of the remaining participants 31 were assigned to the control intervention, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome included:
Other outcomes were other subscales of the MOS SF‐36, including:
Outcomes were measured at baseline, 1 week, 1 month, and 3 months:
Subgroup analysis: a number of subgroup analyses are reported for different times and different measures Adverse events: not reported |
|
Notes | Country: US Funding: National Cancer Institute, Philanthropic support from the Integrative Medicine Program, The University of Texas M.D. Anderson Cancer Center |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "Participants were then randomly assigned… by use of minimization, a form of adaptive randomization" |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Low risk | "An intent‐to‐treat approach was used to analyze the data." The authors used 2 different methods to impute missing data: simple mean imputation and multiple imputation |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Chang 2008.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 24; 12 to the exercise group and 12 to the control group Study start and stop dates: not reported Length of intervention: 3 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: AML Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 12 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: target HR = resting + 30 Frequency: 5 days per week Duration of individual sessions: 12 minutes Duration of exercise program: 3 weeks Total number of exercise sessions: 15 sessions Format: individual Facility: hospital Professionally led by an Masters‐prepared nurse research assistant, who accompanied patient on walk Adherence: not reported 12 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline, 1 week, 2 weeks, and 3 weeks:
Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: Taiwan Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | 1 participant from the exercise group and 1 from the control group were not included in any analyses |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Cheville 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 103; 49 to the exercise group and 54 to the control group Study start and stop dates: not reported Length of intervention: 3 weeks Length of follow‐up: 6 months |
|
Participants | Type cancer, n (%): various:
Time since cancer diagnosis: not reported Time in active treatment, mean (SD) days from surgery to enrolment:
Time in active treatment, currently receiving chemotherapy, n (%):
Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD, range) years:
Age at cancer diagnosis: not reported Ethnicity/race: 100% white Education level: not reported SES: not reported Employment status, currently employed, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 57 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): anaerobic Intensity of the experimental exercise intervention: not reported Frequency: 3 times per week Duration of individual sessions: 90 minutes, with 30 minutes devoted to physical therapy conditioning exercises Duration of exercise program: 3 weeks Total number of exercise sessions: 8 sessions Format: group Facility: facility and home Professionally supervised and led by a physical therapist Adherence: 6 participants (10.9%) missed ≥ 4 sessions. Attended session rate for the entire cohort was 89.3% 58 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline and at 4 weeks, 8 weeks, and 27 weeks:
Subgroup analysis: cancer type and age group Adverse events: not reported |
|
Notes | Country: US Funding: Linse Bock Foundation and the Saint Marys Hospital Sponsorship Board |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "...randomly assigned...using a minimization procedure that balances the marginal distribution" |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Analyses were not conducted on an ITT basis and there was substantial attrition from the trial, especially in the intervention arm. However, "...Missing data were dealt with in a number of ways. Simple imputations of missing data for the primary QOL‐related secondary endpoints was undertaken as a sensitivity analysis." |
Selective reporting (reporting bias) | High risk | Data on several secondary outcomes were not reported. There were subgroup analyses which were not prespecified |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Cohen 2004.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 39; 20 to the exercise group and 19 to the control group Study start and stop dates: not reported Length of intervention: 7 weeks Length of follow‐up: 1 week, 1 month, and 3 months after the last session |
|
Participants | Type cancer: lymphoma Stage, %:
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n: female, 12; male, 32 Current age, mean years: 51 years Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history, n:
On hormone therapy, n:
|
|
Interventions | 19 participants assigned to the Tibetan yoga exercise intervention, including:
The exercises are simple motions done with specific breathing patterns Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: mild Frequency: once per week, with recommendation to practice techniques at home at least daily Duration of individual session: not reported Duration of exercise program: 7 weeks Total number of exercise sessions: 7 sessions Format: group and individual Facility: tertiary care hospital and home Professionally led: Tibetan yoga instructor Adherence: all participants attended at least 1 yoga session; 6 (32%) attended all 7 sessions; 5 (26%) attended 5 or 6 sessions; 6 (32%) attended 2 or 3 sessions; and 2 (10%) attended only 1 session Co‐intervention: none Control group: 19 assigned to control group, consisting of
Contamination of control group: not reported |
|
Outcomes | Outcomes: QoL outcomes, including:
Outcomes were measured at baseline and at 1 week, 1 month, and 3 months after the last yoga session:
Adverse events: not reported |
|
Notes | Country: US Funding: Bruce S. Gelb Foundation |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "Group assignment was conducted sequentially using minimization" |
Allocation concealment (selection bias) | Low risk | "The allocation process was concealed from all investigators because all the relevant information was entered into a computer program and group assignment was determined by the program" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | Although it was stated that only 1 study participant dropped out before the end of the study, data were presented only for 30 study participants, not the 38 who completed the study |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Courneya 2003a.
Study characteristics | ||
Methods | Study design: Cluster randomized controlled trial, where clusters were psychotherapy classes Number randomized: 108; 60 (in 11 classes) to the exercise group and 48 (in 11 classes) to the control group Study start and stop dates: group psychotherapy classes were conducted between September 1998 and April 2001 Length of intervention: 10 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: various Breast cancer, 40.6%; colon cancer, 9.4%; ovarian cancer, 5.2%; stomach cancer, 4.2%, melanoma, 4.2%; HD, 3.1%; NHL, 3.1%; brain, 3.1%; lung cancer, 3.1%; other, 15.6%; missing, 8.3% Time since cancer diagnosis, mean (SD) months:
Time in active treatment: not reported, although 43.5% of participants in exercise group and 45.2% of participants in control group were still receiving treatment Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, %:
Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, % completing university:
SES, % with family income > USD40,000:
Employment status, % currently employed:
Comorbidities: not reported Past exercise history, mean (SD) minutes participants engaged in mild, moderate, or strenuous exercise:
On hormone therapy: not reported |
|
Interventions | 60 participants assigned to the personalized exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: goal was to achieve 65% to 75% of estimated HR maximum as soon as safely possible Frequency: 3 to 5 times per week Duration of individual sessions: 20 to 30 minutes Duration of exercise program: 10 weeks Total number of exercise sessions: variable, but maximum would be 50 sessions Format: individual Facility: home, with group psychotherapy classes offered in facility (Cross Cancer Institute) Not professionally led 48 participants assigned to the control group, including:
Adherence: 51/60 participants completed the 10‐week intervention; 43/51 (84.3%) achieved the minimum exercise prescription of 60 minutes of moderate to strenuous exercise per week and 16/51 (31.4%) achieved the optimum exercise prescription of 150 minutes of moderate to strenuous exercise per week. Total minutes of exercise, mean (SD) = 196.65 (149.56) minutes Contamination of control group: mean (SD) minutes when participants in the control group participated in exercise = 100.91 (104.24) minutes |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and 10 weeks:
Subgroup analysis: several subgroup analyses were prespecified and conducted Adverse events: none reported |
|
Notes | Country: Canada Funding: National Institutes of Health, Canadian Institutes of Health Research, National Cancer Institute of Canada (NCIC), CCS, CCS/NCIC Sociobehavioral Cancer Research Network |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Allocation sequence was generated using a random numbers table |
Allocation concealment (selection bias) | High risk | Allocation was not completely concealed. It was concealed from the fitness appraiser but not from other study personnel |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | Although stated that analyses were conducted on an ITT basis, the treatment of missing data was not described. There was substantial attrition from the study in both study groups |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Courneya 2007a.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 242; 78 to an aerobic exercise group, 82 to a resistance exercise group, and 82 to the control group Study start and stop dates: February 2003 to July 2005 Length of intervention: length of the chemotherapy session (median 17 weeks; 95% CI 9 to 24 weeks) Length of follow‐up: 6 months |
|
Participants | Type cancer: breast cancer Stage, n (%)
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (range) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, completed university, n (%):
SES, income > USD60,000 per year, n (%):
Employment status, full time employed, n (%):
Comorbidities, hypertension, n (%):
Past exercise history, n (%)
On hormone therapy: not reported Obese, n (%):
BMI, n (%):
Current smoker, n (%):
|
|
Interventions | 78 participants assigned to the aerobic exercise intervention, including:
82 participants assigned to the resistance exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic or anaerobic Intensity of the experimental exercise intervention:
Frequency: 3 times per week Duration of individual sessions:
Duration of exercise program: length of chemotherapy (~ 17 weeks) Total number of exercise sessions: ~ 51 sessions Format: individual Facility: facility Professionally led by exercise trainers Adherence:
82 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Other outcomes included:
Outcomes were measured at baseline, at mid‐point, at end of the intervention, and at 6‐month follow‐up:
Subgroup analysis: subgroups included patient preference, marital status, age, disease stage, chemotherapy protocol Adverse events: 2 participants experienced an adverse event related to exercise after baseline maximal treadmill testing: 1 became lightheaded, hypotensive, and moderately nauseous and 1 experienced dizziness, weakness, and mild diarrhea |
|
Notes | Country: Canada Funding: Canadian Breast Cancer Research Alliance, Canada Research Chairs Program, NCIC with funds from the CCS and the NCIC/CCS Sociobehavioral Cancer Research Network, Heart and Stroke Foundation of Canada, Canadian Institutes of Health Research, Alberta Heritage Foundation for Medical Research |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer generated |
Allocation concealment (selection bias) | Low risk | The allocation sequence was generated in Edmonton and concealed from the project directors at each site who assigned participants to groups |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Used all available data in ITT analyses, using the missing at random assumption for mixed models |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Courneya 2008.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 55; 26 to the exercise group and 29 to the control group Study start and stop dates: July 2003 to September 2006 Length of intervention: 12 weeks Length of follow‐up: 1 to 2 weeks after intervention |
|
Participants | Type cancer, n (%): breast cancer (primary) or metastatic disease
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, female, n (%):
Current age, mean (range) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, completed university, n (%):
SES, income > USD60,000 per year, n (%)
Employment status, employed full or part‐time, n (%):
Comorbidities, n (%):
Past exercise history, current exerciser, n (%):
On hormone therapy: not reported |
|
Interventions | 26 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: 60% to 100% of baseline peak power output Frequency: 3 times per week Duration of individual sessions: not reported Duration of exercise program: 12 weeks Total number of exercise sessions: 36 sessions Format: individual Facility: facility Professionally led by an exercise physiologist Adherence: participants attended 84.2% (30.3/36) of scheduled exercise sessions and achieved the prescribed exercise duration and intensity in 94.7% (28.7/30.3) and 94.1% (28.5/30.3) of the sessions 29 participants assigned to control group, including:
Contamination of control group: mean (SD) 32 (80) minutes of nonprotocol‐related moderate to strenuous exercise per week |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline, 12 weeks, and 13 to 14 weeks:
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Canada Funding: Canada Research Chairs Program, Research Team Grant from the National Cancer Institute of Canada, CCS, NCIC/CCS Sociobehavioral Cancer Research Network, Health Research Studentships from the Alberta Heritage Foundation for Medical Research |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "computer‐generated program" |
Allocation concealment (selection bias) | Low risk | "The allocation sequence was concealed from the project director who assigned participants to groups" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Low risk | "...according to intention‐to‐treat principles using the last observation carried‐forward method" |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Courneya 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 122; 60 to an exercise group and 62 to the control group Study start and stop dates: 2005 to 2008 Length of intervention: 12 weeks Length of follow‐up: 6 months |
|
Participants | Type cancer, n (%): lymphoma
Stage, n (%):
Time since cancer diagnosis, mean (SD) months since diagnosis:
Time in active treatment: not reported, but some participants still being actively treated. Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (range) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, completed university, n (%):
SES, income > USD60,000 per year, n (%):
Employment status, employed, n (%):
Comorbidities, n (%):
Past exercise history, baseline exerciser, n (%):
On hormone therapy: not reported Current chemotherapy, n (%):
Other characteristics, n (%):
Other characteristics, mean (SD):
|
|
Interventions | 60 participants assigned to the exercise group, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: started at 60% of peak power output (VO2 peak) and increased by 5% each week to 75% by the fourth week Frequency: 3 times per week Duration of individual sessions: 15 to 20 minutes for first 4 weeks, increased by 5 minutes per week to 40 to 45 minutes in the ninth week Duration of exercise program: 12 weeks Total number of exercise sessions: 36 sessions Format: group Facility: facility Professionally led by an exercise physiologist 62 participants assigned to the control group, including:
Adherence: attended a mean of 28/36 (77.8%) and a median of 33/36 (91.7%) supervised sessions. Duration and intensity were met during 27.8/28 (99.0%) and 25.4/28 (90.7%) supervised sessions, respectively.
Contamination of control group: the mean change in vigorous exercise from baseline: ‐4 minutes
|
|
Outcomes | Primary outcome: patient‐rated physical functioning, assessed using the TOI‐An from the FACT‐An scale Secondary QoL outcomes included:
Outcomes were measured at baseline, 12 weeks, and 6 months:
Subgroup analyses: major disease type, current treatment status (on chemotherapy versus not), patient preference, age, sex, marital status, disease stage at entry, general health, BMI Adverse events: 3 adverse events related to exercise (back, hip, knee) |
|
Notes | Country: Canada Funding: Lance Armstrong Foundation; Canada Research Chairs Program; Alberta Heritage Foundation for Medical Research; NCIC; and by the CCS and the NCIC/CCS Sociobehavioral Cancer Research Network |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "computer‐generated sequence" |
Allocation concealment (selection bias) | Low risk | "The allocation sequence was generated independently and concealed in opaque envelopes from the study coordinator who assigned participants to groups." |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | "Outcomes assessors were not always blinded to group assignment but were trained in standardizing testing procedures." |
Incomplete outcome data (attrition bias) All outcomes | High risk | Although stated ITT analyses, missing data were not accounted for. In exercise group, 3 participants did not complete QoL measures postintervention and 3 at 6 months In control group, 2 participants did not complete QoL measures postintervention, and 5 at 6 months |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Crowley 2003.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 22; 13 to the exercise group and 9 to the control group Study start and stop dates: not reported Length of intervention: 13 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Cancer stage, n (%): Stage I, 13 (59.1%); Stage II, 9 (40.9%) Time since cancer diagnosis: not reported Time in active treatment: completed surgery, initiating adjuvant chemotherapy of four 3‐week cycles of adriamycin and cytoxan Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, range: 36 to 58 years Age at cancer diagnosis: not reported Ethnicity/race, n (%): Caucasian, 21 (95.5%); African American, 1 (4.5%) Education level, n (%): high school, 1 (4.5%); vocational school, 1 (4.5%); some years of college, 6 (27.3%); college graduate, 14 (63.6%) SES: not reported Employment status, n (%): unemployed, 3 (13.6%); full‐time, 14 (63.6%); part‐time, 5 (22.7%) Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported Menopausal status, n (%): premenopausal, 12 (54.5%); postmenopausal, 10 (45.5%) |
|
Interventions | 13 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention:
Frequency: 3 to 5 times per week Duration of individual sessions: not reported Duration of exercise program: 13 weeks Total number of exercise sessions: 39 to 65 sessions over 13 weeks Format: individual Facility: home Professionally led in that education provided by an exercise physiologist twice during the program, once at the beginning and once during week 8 Adherence: average days walked per week was 3.66 days or 113 minutes per week 9 participants assigned to control group, including:
Contamination of control group: average days walked per week was 1.79 days or 53 minutes per week |
|
Outcomes | Primary outcomes: non‐HRQoL and HRQoL outcomes including:
Outcomes were measured at baseline, 7 weeks, and 13 weeks:
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: US Funding: Sigma Theta, Rho Chapter, Oncology Nursing Society Foundation, Pharmacia & Upjohn |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Random numbers table used, with consecutive numbers on the table used with those numbers ending in an even integer assigned to the exercise group, and numbers ending in an odd integer assigned to the control group |
Allocation concealment (selection bias) | Low risk | Each random number placed in an envelope that was sealed and consecutively numbered on the outside |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were not conducted on an ITT basis and the treatment of missing data was not described. It is unclear how much attrition occurred in the trial |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Culos‐Reed 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 100; 53 to the exercise group and 47 to the control group Study start and stop dates: recruitment occurred between 2004 and 2006 Length of intervention: 16 weeks Length of follow‐up: 12 months |
|
Participants | Type cancer: prostate cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD, range) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, n (%):
SES, annual income, n (%):
Employment status, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 53 participants assigned to the individualized physical activity exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: moderate Frequency:
Duration of individual sessions:
Duration of exercise program: 16 weeks Total number of exercise sessions:
Format: individual and group Facility: home and facility (fitness center) Group‐based component professionally led by certified fitness professional Adherence: not reported 47 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline, 16 weeks, 6 months, and 12 months:
Subgroup analysis: not reported Adverse events: not reported |
|
Notes | Country: Canada Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assigned was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Analyses were conducted on an ITT basis |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Danhauer 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 44; 22 to the exercise group and 22 to the control group Study start and stop dates: recruitment from August 2005 to October 2006 Length of intervention: 10 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer, DCIS or Stages I to IV Cancer stage, n (%):
Time since cancer diagnosis, mean (SD) months:
Time in active treatment: 2 to 24 months post primary treatment (surgery); 34% still in active treatment Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, n (%):
SES, n (%):
Employment status: not reported Comorbidities: not reported Past exercise history, n (%):
On hormone therapy: not reported Ongoing treatment, n (%):
|
|
Interventions | 22 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic/anaerobic Intensity of experimental exercise intervention: mild Frequency: once per week Duration of individual sessions: 75 minutes Duration of exercise program: 10 weeks Total number of exercise sessions: 10 sessions Format: group Facility: Wake Forest University Health Sciences and local studio Professionally led by yoga instructor with cancer‐specific yoga training who was registered by the National Yoga Alliance 22 participants assigned to control group, including:
Adherence: 11 women attended 7 or more sessions; 6 women attended 3 to 6 sessions; and 5 women attended ≤ 2 sessions Contamination of control group: not reported |
|
Outcomes | No primary outcomes were identified. Outcomes included:
Outcomes were measured at baseline and at 10 weeks (end of the intervention):
Adverse events: cancer recurrence was reported for 4 women in the exercise group and 6 women in the control group. No adverse events were reported |
|
Notes | Country: US Funding: Wake Forest University Comprehensive Cancer Center |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | Data were analyzed on an ITT basis. Participants who failed to return the study questionnaire were excluded from the analyses ‐ 9 participants in the exercise group and 7 participants in the control group did not return the study questionnaire. 1 participant in the control group withdrew from the study |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
de Oliveira 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 55; 28 to the exercise group and 27 to the control group Study start and stop dates: June 2005 to September 2006 Length of intervention: length of radiation Length of follow‐up: 6 months |
|
Participants | Type cancer: breast cancer Time in cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, range: 40 to 60 years Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, %: primary, 60%; middle, 20%; secondary, 20% SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: about 50% were on hormone therapy |
|
Interventions | 28 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: not reported Duration of individual sessions: 45 minutes Duration of exercise program: length of radiation therapy Total number of exercise sessions: about 18 sessions Format: individual Facility: facility Professionally led: not reported Adherence: not reported 27 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline, end of treatment (~ 3 months), and 6 months:
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Brazil Funding: FAEPEX UNICAMP, pelo financiamento e Bolsa CAPES |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "greada por computador" |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | The outcome assessor was blinded to the study allocation |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Insufficient details provided to determine whether there was any attrition |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Dimeo 1999.
Study characteristics | ||
Methods | Study design: quasi‐randomized controlled trial Number randomized: 62; 29 to the exercise group and 33 to the control group Study start and stop dates: not reported Length of intervention: length of hospitalization Length of follow‐up: to end of the intervention |
|
Participants | Type cancer, n: various
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n:
Current age, mean (SD, range) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported BMI, mean (SD, range):
|
|
Interventions | 29 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: participants "biked" for 1 minute with an intensity sufficient to reach a HR equivalent to at least 50% of the cardiac reserve, calculated as 220 ‐ age ‐ resting HR Frequency: daily Duration of individual sessions: 30 minutes Duration of exercise program: length of hospitalization Total number of exercise sessions: varied Format: individual Facility: facility Professionally supervised and instructed by study personnel Adherence: 82% (SD, 16%) of the hospitalization days 33 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and discharge from hospital (~ 3 months):
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Germany Funding: Nenad Keul Foundation, Freiburg, and Daimler‐Benz AG |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | High risk | Quasi‐randomized |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | The outcome assessor was blinded to the study allocation |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were conducted on an ITT basis; However, the treatment of missing data was not described. There was substantial attrition from the trial, especially in the intervention arm |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
DiSipio 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 337; numbers assigned to the exercise or control group not reported Study start and stop dates: started 2006, but end date not reported Length of intervention: unclear Length of follow‐up: unclear |
|
Participants | Type cancer: breast cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age: not reported Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | Neither the exercise nor control interventions were described, nor the number of participants assigned to either group | |
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline, mid‐intervention (6 months), and 3 months postintervention (12 months) Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Australia Funding: none reported Published conference abstract |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | The outcome assessor was blinded to the study allocation |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Insufficient details provided to determine whether there was any attrition |
Selective reporting (reporting bias) | Unclear risk | Insufficient details provided to assess whether there was selective outcome reporting |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Donnelly 2011.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 33; 16 to the exercise group and 17 to the control group Study start and stop dates: recruitment form June 2008 to March 2009 Length of intervention: 12 weeks Length of follow‐up: 6 months |
|
Participants | Type cancer, n (%): gynecologic cancers (ovarian, endometrial, uterine, cervical, or mixed)
Cancer stage, stage I to III, n (%):
Time since cancer diagnosis, mean (SD) months:
Time in active treatment: some women still receiving treatment Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 16 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: moderate Frequency: aim to meet physical activity guidelines (30 minutes of physical activity on at least 5 days per week) Duration of individual sessions: 30 minutes Duration of exercise program: 12 weeks Total number of exercise sessions: maximum of 60 sessions Format: individual Facility: home Professionally led with initial consultation with a professional physical therapist 17 participants assigned to control group, including:
Adherence: 44% of all participants, or 58% of all individuals who remained medically unfit to take part Contamination of control group: unclear |
|
Outcomes | Primary outcome:
Secondary outcomes:
Outcomes were measured at baseline, 12 weeks (end of intervention), and 6‐month follow‐up (9 months after baseline):
Subgroup analysis: none reported Adverse events:
|
|
Notes | Country: UK Funding: Department of Employment and Learning, Northern Ireland |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer‐generated random numbers table was used to generate the allocation sequence |
Allocation concealment (selection bias) | Low risk | Allocation was concealed in sequentially numbered opaque envelopes |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | The outcome assessor was blinded to the study allocation |
Incomplete outcome data (attrition bias) All outcomes | Low risk | The study used ITT analyses |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Galvao 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 57; 29 to the exercise group and 28 to the control group Study start and stop dates: July 2007 to September 2008 Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: prostate cancer Stage, n (%)
Time since cancer diagnosis: not reported Time in active treatment: 6 months after enrolling Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD) years
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, postsecondary education, n (%):
SES: not reported Employment status, full‐time, n (%):
Comorbidities, number of comorbidities (cardiovascular, hypertension, diabetes, osteoporosis, dyslipidemia), mean (SD):
Past exercise history: not reported On hormone therapy, LHRHa antiandrogen, n (%):
Previous androgen suppression therapy, n (%):
Time on androgen suppression therapy, mean (SD) months:
|
|
Interventions | 29 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: moderate, at 65% to 80% maximum HR and perceived exertion at 11 to 13 (6 to 20 point, Borg scale) Frequency: twice per week Duration of individual sessions: aerobic session was 15 to 20 minutes Duration of exercise program: 12 weeks Total number of exercise sessions: 24 sessions Format: group Facility: facility Professionally led by an exercise physiologist Adherence: not reported 28 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline and end of intervention (12 weeks):
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Australia Funding: Cancer Council of Western Australia |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer random assignment program |
Allocation concealment (selection bias) | Low risk | Concealed from project coordinator and exercise physiologist |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Low risk | ITT analyses was completed with missing values imputed as change across time to be zero |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Gomes 2011.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 54; number assigned to exercise and control groups not reported Study start and stop dates: not reported Length of intervention: not reported Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: non‐metastatic breast cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, median years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported BMI, median:
Premenopausal, %:
|
|
Interventions | The number of participants assigned to the exercise intervention was not reported. The exercise intervention included:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: not reported Duration of individual sessions: not reported Duration of exercise program: not reported Total number of exercise sessions: not reported Format: individual Facility: home Professionally led: unclear Adherence: not reported The number of participants assigned to the control intervention was not reported. The control intervention included:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and end of intervention, but the number of individuals by treatment group at each time point was not reported Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Brazil Funding: none reported Published as conference abstract |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Insufficient details provided to determine whether there was any attrition |
Selective reporting (reporting bias) | Unclear risk | Insufficient details provided to assess whether there was selective outcome reporting |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Griffith 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 138; 73 to the exercise group and 65 to the control group Study start and stop dates: not reported Length of intervention: varied by duration of cancer treatment. For the entire sample, the mean (SD) number of cancer treatment weeks was 12.83 (5.15) with a range of 5 to 35 weeks. The mean (SD) total weeks of cancer treatment was 15.8 (5.89) for nonprostate and 10.44 (2.73) for prostate cancer patients Length of follow‐up: to end of the intervention |
|
Participants | Type cancer, n (%): various
Cancer stage, n (%): Stage I, 12 (10%); Stage II, 89 (70%); Stage III, 25 (20%) Time since cancer diagnosis: not reported Time in active treatment: currently undergoing treatment Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, n (%):
SES: not reported Employment status, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported\ |
|
Interventions | 73 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: moderate, corresponding to approximately 50% to 70% of the maximum HR Frequency: 5 times per week Duration of individual sessions: 25 to 35 minutes Duration of exercise program: varied by duration of cancer treatment. For the entire sample, the mean (SD) number of cancer treatment weeks was 12.83 (5.15); range (5 to 35 weeks) Total number of exercise sessions: varied Format: individual Facility: home Not professionally led Adherence, defined as walking at least 60 minutes weekly for more than 2/3 of the total program: 67.6% with an average walking time of 117 (SD = 105) minutes per week 65 participants assigned to control group, including:
Contamination of control group: non‐adherence defined as walking more than 60 minutes for more than 2/3 of treatment weeks. Adherence = 77.6%, and contamination = 22.4% |
|
Outcomes | Primary outcome included:
Other outcomes included:
Outcomes were measured at baseline and end of intervention:
Subgroup analysis: examined outcomes by cancer type (prostate versus other cancer) and performed secondary dose‐response analysis, which evaluated outcomes based on the actual amount of exercise performed according to the Physical Activity Questionnaire, regardless of group assignment. This secondary analysis was necessitated by the finding that, contrary to study instructions, 22.4% of the control group participants performed exercise at a level at least equivalent to what was assigned for the exercise group. The subgroup analysis and the secondary analysis were not prespecified Adverse events: not reported |
|
Notes | Country: US Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | Although analyses were conducted on an ITT basis, 5 participants from the intervention arm and 7 from the control arm were not included in the analyses |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Hacker 2011.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 22, but 2 did not have a transplant and 1 did not have baseline data. The author reported that 19 individuals were randomized, 9 to the exercise group and 10 to the control group Study start and stop dates: not reported Length of intervention: 6 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: hematologic malignancies Time since cancer diagnosis: not reported Time in active treatment: all receiving an HSCT Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n: male, 14; female, 5 Current age, mean (SD, range) years: 46.26 (16.23, 20 to 67) years Age at cancer diagnosis: not reported Ethnicity/race, n: African Americans, 11; white, 7; Hispanic, 1 Education level, n: completed some college as their highest level of education, 10 SES, n: income level < USD40,000, 10 Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 9 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): anaerobic Intensity of the experimental exercise intervention: Borg RPE scale of somewhat hard (Borg scale 13) Frequency: 3 times per week, once or twice at the clinic and once or twice at home Duration of individual sessions: varied Duration of exercise program: 6 weeks Total number of exercise sessions: 18 sessions Format: individual Facility: facility and home Professionally led: unsupervised and supervised by the principal investigator or a trained member of the research team Adherence: by week 2, all participants in the strength‐training group exercised at least once or twice per week, and most met the strength‐training prescription of exercising 3 times per week by week 3. All of the participants exercised at least once or twiceper week for at least 5 of the 6 weeks 10 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Other outcomes included:
Outcomes were measured at baseline, 8 days after transplant (second baseline), and 6 weeks after discharge from the hospital:
Subgroup analysis: none Adverse events: 2 participants, 1 each from the exercise and control groups died during the course of the trial as a result of their underlying medical condition |
|
Notes | Country: US Funding: National Institutes of Health/National Institute of Nursing Research |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were not conducted on an ITT basis and the treatment of missing data was not described. There was substantial attrition from the trial, especially in the intervention arm |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Haddad 2011.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 163; 53 to the yoga exercise group, 56 to the stretching exercise group, and 54 to the control group Study start and stop dates: not reported Length of intervention: 6 weeks Length of follow‐up: 1, 3, and 6 months |
|
Participants | Type cancer: breast cancer, Stages 0 to III Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean years: 51.9 years Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 53 participants assigned to the yoga exercise intervention 56 participants assigned to the stretching exercise intervention Type exercise (aerobic/anaerobic): aerobic or anaerobic
Intensity of the experimental exercise intervention: not reported Frequency: 3 times per week for either yoga or stretching Duration of individual sessions: not reported Duration of exercise program: 6 weeks Total number of exercise sessions: 18 sessions for either yoga or stretching Format: not reported Facility: unclear Professionally led: not reported Adherence: not reported 54 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline, end of treatment (6 weeks), 1, 3, and 6 months following end of treatment:
Subgroup analysis: not reported Adverse events: not reported |
|
Notes | Country: unclear, investigators from US, India and Germany Funding: none reported Published conference abstract |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Generation of allocation sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Insufficient details provided to determine whether there was any attrition |
Selective reporting (reporting bias) | Unclear risk | Insufficient details provided to assess whether there was selective outcome reporting |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Headley 2004.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 38; the number of participants originally assigned to the exercise or control group not reported Study start and stop dates: not reported Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer, Stage IV Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n:
Education level, years of education, mean (SD):
SES: not reported Employment status, n:
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | The number of study participants originally assigned to the exercise intervention not reported. Data available for 16 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: moderate Frequency: 3 times per week Duration of individual sessions: 30 minutes Duration of exercise program: 12 weeks Total number of exercise sessions: 36 sessions Format: individual Facility: home Not professionally led Adherence: not reported The number of study participants originally assigned to the control intervention not reported. Data available for 16 participants assigned to the control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and at the beginning of each course of chemotherapy for 12 weeks for a total of 4 measurements. The numbers by treatment group not reported. The total number of participants at each time point included: baseline, n = 32; cycle 2, n = 28; cycle 3, n = 30; cycle 4, n = 24 Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: US Funding: ONS Foundation and the University of Texas Health Sciences Center in the Houston School of Nursing |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer used to generate the random sequence |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | There was no discussion on how missing data were addressed. In addition, there were no ITT analyses as data on women who did not complete the study were excluded from the analyses |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Hwang 2008.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 40; 17 to the exercise group and 20 to the control group Study start and stop dates: not reported Length of intervention: 5 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Time since cancer diagnosis: not reported Time in active treatment: women approached at first planned radiation therapy treatment visit Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 17 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: target HR of 50% to 70% of the age‐adjusted HR maximum Frequency: 3 times per week Duration of individual sessions: 50 minutes Duration of exercise program: 5 weeks Total number of exercise sessions: 15 sessions Format: not reported Facility: not reported Professionally led: not reported Adherence: all 17 patients completed the program 23 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. Outcomes included:
Outcomes were measured at baseline and 5 weeks:
Subgroup analysis: none Adverse events: "No significant exercise‐related adverse events such as lymphedema were reported" |
|
Notes | Country: Korea Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Generation of allocation sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | 3 in control group lost to follow‐up |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Jarden 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 42; 21 to the exercise group and 21 to the control group Study start and stop dates: April 2005 to November 2007 Length of intervention: length of hospitalization Length of follow‐up: 6 months |
|
Participants | Type cancer, n: hematologic malignancies
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, university or secondary school, n (%):
SES: not reported Employment status, full‐time, employed, n (%):
Comorbidities: not reported Past exercise history, baseline physical activity level I + II, n (%)
On hormone therapy: not reported BMI, mean (SD)
|
|
Interventions | 21 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: not to exceed 75% of maximal HR Frequency: 5 days per week Duration of individual sessions: 1 hour ± 10 minutes Duration of exercise program: length of hospitalization Total number of exercise sessions: varied Format: individual Facility: hospital Professionally led by a research investigator Adherence: not reported 21 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Other outcomes included:
Outcomes were measured at baseline, postintervention, 3 months, and 6 months:
Subgroup analysis: none Adverse events:
|
|
Notes | Country: Denmark Funding: The Lundbeck Foundation, The Novo Nordic Foundation, The Danish Cancer Society, The Copenhagen Hospital Corporation, The Danish Nursing Society |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "...using the computerized Clinical International Trial Management System" |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Used ITT with assumption that data were missing at random |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Lanctot 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 101; 58 to the exercise group and 43 to the control group Study start and stop dates: not reported Length of intervention: 8 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer, Stages I to III Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: not reported Current age: not reported Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 58 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): unclear Intensity of the experimental exercise intervention: not reported Frequency: once per week Duration of individual sessions: 90 minutes Duration of exercise program: 8 weeks Total number of exercise sessions: 8 sessions Format: not reported Facility: facility and home Professionally led by yoga instructors accredited with the Bali method Adherence: not reported 43 participants assigned to control group, which was not described Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and at 8 weeks:
Subgroup analysis: none reported Adverse events: not reported |
|
Notes | Country: Canada Funding: none reported Published conference abstract |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Generation of allocation sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Insufficient details provided to determine whether there was any attrition |
Selective reporting (reporting bias) | Unclear risk | Insufficient details provided to assess whether there was selective outcome reporting |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Moadel 2007.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 164; 108 to a yoga exercise group and 56 to the control group Study start and stop dates: 2001 to 2005 Length of intervention: 12 weeks Length of follow‐up: 1, 3, and 6 months |
|
Participants | Type cancer: breast cancer, stage of disease:
Time since cancer diagnosis, mean (SD, range) years:
Time in active treatment: receiving chemotherapy, %:
Randomization was stratified by treatment status Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria: none reported Gender: female Current age, mean (SD, range) years:
Age at cancer diagnosis: not reported Ethnicity/race, %:
Education level:
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy, %:
|
|
Interventions | 108 participants assigned to exercise group, consisting of yoga with each session including:
All exercises were done in a seated or reclined position Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: mild Frequency: once per week, but participants were allowed to attend more than 1 session per week and asked to practice yoga at home Duration of sessions: 90 minutes Duration of program: 12 weeks Total number of exercise sessions: 12 sessions Facility: facility and home Professionally led: not reported 56 participants assigned to control group, including:
Adherence: 26 (31%) participants did not attend any classes, but 8 reported practicing yoga at home at least a few times per week. The mean number of classes attended by active class participants was 7.00 (SD 3.80) classes. Of 59 participants reporting data, 61% practiced yoga at home at least a few times per week Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and 12 weeks:
Subgroup analysis: by treatment status Adverse events: none reported |
|
Notes | Country: US Funding: National Cancer Institute, Langeloth Foundation |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Generation of allocation sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | Investigators stated that they used an "intention‐to‐treat approach" but it is unclear how the 24 drop‐outs in the exercise arm and the 12 drop‐outs in the control arm were handled |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Mock 1994.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 14; 9 to the exercise group and 5 to the control group Study start and stop dates: not reported Length of intervention: duration of chemotherapy (4 to 6 months) Length of follow‐up: 1 month postchemotherapy |
|
Participants | Type cancer: breast cancer Time since cancer diagnosis: not reported Time in active treatment: enrolled prior to beginning chemotherapy Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age: mean (range), 44 (34 to 61) years Age at cancer diagnosis: not reported Ethnicity/race: 93% Caucasian, 7% Other Education level: mean years of education, 16 years SES: not reported Employment status: 78% employed Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 9 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: 4 or 5 times per week Duration of individual sessions: 10 to 45 minutes and 5 minutes cool‐down Duration of exercise program: 4 to 6 months Total number of exercise sessions: varied Format: individual Facility: home Not professionally led Adherence: "...not all equally successful in maintaining an active exercise program, but all exercised for a minimum of 30 minutes three or more times per week throughout the program" 5 participants assigned to control group, including:
Contamination of control group: "two did not exercise at all, and three exercised less than 30 minutes twice per week" |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline, mid‐treatment (about 3 months), and end of the intervention (about 6 months):
Subgroup analysis: none Adverse events: "No walkers suffered any known physical injury or bleeding episode related to the walking program" |
|
Notes | Country: US Funding: American Cancer Society—Massachusetts Division, American Nurses Foundation, Massachusetts Nurses Foundation, Boston College |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | All study participants were included in the analyses in the originally assigned treatment group |
Selective reporting (reporting bias) | High risk | Only some of the symptoms from the SAS were included in the table; others were summarized only using generalities in the text "infrequently" |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Mock 1997.
Study characteristics | ||
Methods | Study design: quasi‐randomized controlled trial Number randomized: 50, numbers originally assigned to treatment groups not reported, but 22 reported assigned to the exercise group and 24 to the control group Study start and stop dates: not reported Length of intervention: about 6 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer, Stage I or II Time since cancer diagnosis: not reported Time in active treatment: received breast‐conserving surgery; undergoing radiation therapy Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, mean (SD) years:
SES: not reported Employment status, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 22 participants reported to be assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: 4 or 5 times per week Duration of individual sessions: 25 to 35 minutes Duration of exercise program: about 6 weeks Total number of exercise sessions: 24 to 30 sessions Format: individual Facility: home Not professionally led Adherence: 19/22 (86%) reported exercising ≥ 3 times per week for at least 30 minutes 24 participants reported to be assigned to control group, including:
Contamination of control group: "several control subjects were regular walkers at the time of study entry" |
|
Outcomes | No primary outcome was identified. Outcomes included:
Outcomes were measured at baseline and end of intervention at 6 weeks. Symptom experience and fatigue were also assessed at 3 weeks. Numbers of participants with data at each time point not reported by treatment group, but implied to be 22 in exercise group and 24 in control group Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: US Funding: Commonwealth of Massachusetts Department of Public Health Breast Cancer Researcher's Award; National Institute for Nursing Research Exploratory Center Award |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | High risk | Random assignment of first participant and then alternating assignment |
Allocation concealment (selection bias) | High risk | Alternation of treatment assignment |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | No ITT analyses were performed and no accounting of study participants who withdrew from study |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Mock 2001.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 52, numbers assigned to exercise or control group not reported Study start and stop dates: not reported Length of intervention: duration of treatment; 6 weeks for radiation therapy and 4 to 6 months for chemotherapy Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Stage, %: Stage I, 54%; Stage II, 40%; Stage IIIa, 6% Time since cancer diagnosis: not reported Time in active treatment: In treatment Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age: mean (range) years: 47.98 (28 to 75) years Age at cancer diagnosis: not reported Ethnicity/race, n (%): white, 43 (86%); African American, 6 (12%); Hispanic, 1 (2%) Education level, mean (range) years of education: 14.76 (8 to 20) years SES: not reported Employment status, n (%): full‐time, 24 (48%); part‐time, 9 (18%; unemployed, 17 (34%) Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | Number of participants assigned to the exercise intervention not reported. The exercise intervention included:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: 5 or 6 sessions per week Duration of individual sessions: 10 to 15 minutes to start, advancing to 30 minutes Duration of exercise program: to end of therapy Total number of exercise sessions: varied Format: individual Facility: home Not professionally led Adherence: 33% did not maintain a minimum of 90 minutes/week in ≥ 3 daily sessions Number of participants assigned to control group not reported. The control intervention included:
Contamination of control group: 50% were actively exercising during the study period |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Outcomes were measured at baseline and end of the intervention, but numbers by treatment group with data at each time point were not reported Subgroup analysis: owing to poor adherence in the experimental group and high contamination in the control group, the analyses reported were not based on randomization but based on high‐walkers versus low‐walkers Adverse events: none reported Cost: Described as "low cost" but no data reported |
|
Notes | Country: US Funding: Fatigue Initiative in Research, Education Grant from the Oncology Nursing Society Foundation through a donation from Ortho Biotech |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer generated |
Allocation concealment (selection bias) | Unclear risk | Sealed envelopes |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | No ITT analyses were performed |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Mock 2005.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 119; 60 to the exercise group and 59 to the control group Study start and stop dates: recruitment between 1998 and 2001 Length of intervention: for the duration of treatment, 6 weeks if radiation therapy or 3 to 6 months if chemotherapy Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Stage, %
Time since cancer diagnosis: not reported Time in active treatment: initiating adjuvant therapy Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, % Caucasian:
Education level, years of education, mean (SD) years:
SES: not reported Employment status: 73% employed Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported Adjuvant treatment: radiation therapy, 58%; chemotherapy, 42% |
|
Interventions | 60 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: target HR range of ~ 50% to 70% of maximum HR Frequency: 5 or 6 times per week Duration of individual sessions: 45 minutes Duration of exercise program: 6 weeks for radiation or 3 to 6 months for chemotherapy Total number of exercise sessions: varied Format: individual Facility: home Not professionally led Adherence: defined as engaging in ≥ 60 minutes of aerobic activity for at least 67% of the duration of the trial: 39/54 (72%) adhered 59 participants assigned to control group, including:
Contamination of control group: defined as exceeding 45 minutes of aerobic activity weekly for 67% of the duration of the trial: 33/54 (61%) were not contaminated; 39% were contaminated |
|
Outcomes | Primary outcome:
Other outcomes included
Outcomes were measured at baseline and end of the intervention:
Subgroup analysis: high walkers (>60 minutes per week in ≥ 3 sessions) versus low walkers (< 60 minutes per week or not at all) Adverse events: not reported |
|
Notes | Country: US Funding: Fatigue Initiative in Research and Education multi‐institutional award from the Oncology Nursing Society Foundation |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer generated |
Allocation concealment (selection bias) | Low risk | Number sealed opaque envelopes |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | No ITT analyses were performed and 6 participants withdrew from the exercise group and 5 form the control group |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Monga 2007.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 30; not clear how many originally randomized to the exercise or control groups Study start and stop dates: not reported Length of intervention: 8 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: prostate cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD, range) years:
Age at cancer diagnosis: not reported Ethnicity/race: n, (%)
Education level, years education, mean (SD) years:
SES: not reported Employment status: not reported Comorbidities, n (%):
Past exercise history: not reported On hormone therapy: not reported Weight, mean (SD) lb:
|
|
Interventions | 11 participants assigned to the exercise intervention had data (unclear how many originally assigned to exercise group), including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported, instructed to maintain target HR Frequency: 3 times per week Duration of individual sessions: 50 minutes Duration of exercise program: 8 weeks Total number of exercise sessions: 24 sessions Format: unclear Facility: facility Professionally led by a staff kinesiotherapist and supervised by a physician Adherence: not reported 10 participants assigned to control group with data (unclear how many originally assigned to control group), including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. Outcomes included:
Outcomes were measured at baseline and end of the intervention at 8 weeks:
Subgroup analysis: none Adverse events: none reported |
|
Notes | Country: US Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | 9 participants withdrew, but data not provided on these 9 participants |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Moros 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 22; 11 to the exercise group and 11 to the control group Study start and stop dates: not reported Length of intervention: 18 to 22 weeks Length of follow‐up: 10 to 15 days after end of the intervention |
|
Participants | Type cancer: breast cancer, Stages I to III Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age: age range 38 to 64 years Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 11 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: 60% to 70% of determined cardiac HR Frequency: 3 times per week Duration of individual sessions: 60 minutes Duration of exercise program: 18 to 22 weeks Total number of exercise sessions: maximum of 66 sessions Format: individual Facility: facility Professionally led by investigators Adherence: 10 participants adhered > 80% 11 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Outcomes included:
Outcomes were measured at baseline and postintervention (about 3 months):
Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: Spain Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | 1 participant withdrew from the exercise group and 4 from the control group and were not included in the analyses |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Mustian 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 40; 20 to the exercise group and 20 to the control group Study start and stop dates: August 2004 to December 2006 Length of intervention: 4 weeks Length of follow‐up: 3 months |
|
Participants | Type cancer: breast cancer and prostate cancer Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD, range) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level; partial college education or greater, n (%):
SES: not reported Employment status, currently employed, n (%):
Comorbidities: not reported Past exercise history: all were "sedentary" On hormone therapy, n (%):
Weight, mean (SD, range) lbs:
BMI, mean (SD, range)
|
|
Interventions | 20 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention:
Frequency: 7 times per week Duration of individual sessions: not reported Duration of exercise program: 4 weeks Total number of exercise sessions: 28 sessions Format: individual Facility: facility and home Professionally led by a certified exercise scientist Adherence: 15/19 reported increased daily steps walked; 12/19 reported doing resistance training at the end of the intervention; 8/19 maintained resistance training through 3‐month follow‐up. Change in number of steps from baseline to 4 weeks, 3997 (5959) and at 3 months, 5792 (7094.6); change in minutes daily resistance at 4 weeks, 9.43 (11.44), at 6 weeks and at 3 months 6.81 (9.94); change in days/week resistance at 4 weeks, 3.05 (2.99) and at 3 months, 1.33 (2.52) 20 participants assigned to control group, including:
Contamination of control group: 1/19 reported resistance training at 3‐month follow‐up. Change in number of steps from baseline to 4 weeks, ‐572.3 (2139.1) and at 3 months, ‐64.4 (2756.4); change in minutes daily resistance at 4 weeks, ‐1.57 (4.73), at 6 weeks and at 3 months, ‐1.03 (6.06); change in days/week resistance at 4 weeks, ‐0.21 (0.63) and 3 months, ‐0.12 (0.86) |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Non‐HRQoL outcomes included:
Outcomes were measured at baseline, 4 weeks, and 3 months:
Subgroup analysis: none Adverse events: none reported |
|
Notes | Country: US Funding: National Cancer Institute |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "using a randomization scheme with blocks of four" |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | The study appears to have been blinded at baseline, but it is not clear if it was at follow‐up, "A clinical research coordinator obtained patient consent and collected all the self‐report assessments (e.g. BFI) while a second coordinator with a Master's in Exercise Science performed the objective tests (e.g. 6‐minute walk, handgrip dynamometer) and explained the home‐based exercise program to participants." The study statistician and data managers remained blinded at all times |
Incomplete outcome data (attrition bias) All outcomes | Low risk | "Data were analyzed on an "intent‐to‐treat" basis, with patients being analyzed in the group to which they were assigned." 1 participant from each group withdrew before any measures were made |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Mutrie 2007.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 203; 101 to the exercise group and 102 to the control group Study start and stop dates: January 2004 to January 2005 Length of intervention: 12 weeks Length of follow‐up: 6 months |
|
Participants | Type cancer: breast cancer Stage, n (%):
Time since cancer diagnosis, mean (SD) days:
Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status; n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported Weight, mean (SD) kg:
BMI, mean (SD)
|
|
Interventions | 101 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: moderate; 50% to 75% of age adjusted maximum HR Frequency: 3 times per week Duration of individual sessions: 45 minutes Duration of exercise program: 12 weeks Total number of exercise sessions: 36 sessions Format: 2 group and 1 individual session per week Facility: group session were facility based and individual session home based Professionally led by trained exercise specialists Adherence: not reported 102 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcomes included:
Other outcomes included:
Outcomes were measured at baseline, at end of the intervention (12 weeks), and 6 months:
Subgroup analysis: none Adverse events: none reported |
|
Notes | Country: UK Funding: Cancer Research UK, UK Medical Research Council |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "The randomisation was stratified by hospital and treatment at baseline (chemotherapy, radiotherapy, or combination) and used randomised permuted blocks of length four and six (that is, for sequences of four or six women in each hospital‐treatment combination, exactly half were allocated to each group)" |
Allocation concealment (selection bias) | Low risk | "Randomisation was done by telephone to an interactive voice response system" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | "We took steps to blind the evaluation of outcomes by having questionnaire responses in sealed envelopes and ensuring that outcome measures were taken by researchers who were not involved in exercise classes" |
Incomplete outcome data (attrition bias) All outcomes | High risk | "We did the analysis on an intention‐to‐treat basis, in the sense that we took no account of adherence to the intervention. We used all available data." However, 19 participants were not included in the analyses at the 12 weeks, including 12 lost to follow‐up (including 2 excluded from the analyses since they were taking tamoxifen) and 7 not assessed. In the control group, 3 participants were lost to follow‐up and 7 not assessed. At the 6‐month time period, 7 were not assessed in the exercise group and 4 in the control group |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Oh 2008.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 30; 15 to the exercise group and 15 to the control group Study start and stop dates: recruitment took place from July 2006 to August 2006 Length of intervention: 8 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer, n:
Time since cancer diagnosis: not reported Time in active treatment: some patients still undergoing chemotherapy; randomization stratified by whether still being treated or completed therapy Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n:·
Age group, n:
Age at cancer diagnosis: not reported Ethnicity, n:
Education level, n:
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: limited by eligibility criteria On hormone therapy: not reported |
|
Interventions | 15 participants assigned to exercise group, consisting of medical Qigong, with each session including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: mild Frequency: once or twice per week for 8 weeks and recommendation to practice at home daily Duration of sessions: 90 minutes, 1 hour for home sessions Duration of program: 8 weeks Total number of exercise sessions: maximum of 16 facility‐based and 56 home‐based sessions Facility: facility Professionally led: experienced medical Qigong instructor who was a Chinese medicine practitioner 15 participants assigned to control group, including:
Adherence: not reported Contamination of control group: not reported |
|
Outcomes | Primary outcomes, QoL and symptom experience, included:
Physiologic outcomes included:
Outcomes were measured at baseline and 8 weeks:
Subgroup analysis: none reported Adverse events: none reported |
|
Notes | Country: Australia Funding: University of Sydney Cancer Research Fund |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "Randomization was done by a computer program" |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | ITT analysis not completed. Of 15 randomized participants in each treatment group, 7 withdrew from the exercise group and 5 from the control group... |
Selective reporting (reporting bias) | Low risk | There is no evidence of selective reporting of outcomes |
Other bias | High risk | Small sample size can put study at risk of bias |
Oh 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 162; 79 to the exercise group and 83 to the control group Study start and stop dates: first recruitment phase was between July 2006 and August 2007 and the second recruitment phase was from August 2007 to May 2008 Length of intervention: 10 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer, n (%):
Time since cancer diagnosis: not reported Time in active treatment: 36 (47.4%) of patients in the intervention group still undergoing cancer treatment and 34 (45.9%) in the control group; randomization stratified by whether still being treated or completed therapy Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):·
Age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity, n (%):
Education level, n (%):
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: limited by eligibility criteria On hormone therapy: not reported |
|
Interventions | 79 participants assigned to exercise group, consisting of medical Qigong, with each session including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: mild Frequency: twice per week for 10 weeks and recommendation to practice at home daily Duration of sessions: 90 minutes for supervised sessions, 30 minutes for home sessions Duration of program: 10 weeks Total number of exercise sessions: maximum of 20 facility‐based and 70 home‐based sessions Facility: facility Professionally led: experienced medical Qigong instructor who was a Chinese medicine practitioner 83 participants assigned to control group, including:
Adherence: not reported Contamination of control group: not reported |
|
Outcomes | Primary outcome of QoL included:
Secondary outcomes included:
Physiologic outcomes included:
Outcomes were measured at baseline and 10 weeks:
Subset: cognitive function outcomes were reported for a subset of patients enrolled after October 2007, including:
For this group, outcomes were measured at baseline and 10 weeks:
Subgroup analysis: none reported Adverse events: none reported |
|
Notes | Country: Australia Funding: University of Sydney Cancer Research Fund |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "Randomization, by computer..." |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | ITT analysis completed. There were 25 drop‐outs in the exercise group and 29 drop‐outs in the control group, and missing values were "dealt with by multiple imputation..." |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Raghavendra 2007.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 98; 45 to the exercise group and 53 to the control group, but this substudy only included 65 participants who began chemotherapy, 31 to the exercise group, and 34 to the control group Study start and stop dates: participants were recruited between January 2000 and June 2002 Length of intervention: varied, based on the number (4 to 8) of adjuvant chemotherapy cycles prescribed following surgery Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment; number of chemotherapy cycles, n (%):
Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age: not reported Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, mean (SD) years of education:
SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 28 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: 6 days per week at home Duration of individual sessions: 1 hour per day at home Duration of exercise program: varied Total number of exercise sessions: unclear Format: individual Facility: clinic and home based Professionally led by a yoga expert in the clinic Adherence: not reported 34 participants assigned to control group, including:
Originally 53 participants assigned, but only 34 were eligible for this substudy Contamination of control group: not reported |
|
Outcomes | Primary outcomes included:
Other outcomes included:
Outcomes were measured at baseline (before starting chemotherapy), mid‐cycle, and at the end of chemotherapy:
Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: India Funding: Central Council for Research in Yoga and Naturopathy, Ministry of Health and Family Welfare, Government of India |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Allocation sequence was generated using random numbers generated by a random number table |
Allocation concealment (selection bias) | Low risk | Treatment assigned was concealed from study personnel using opaque envelopes, which were opened sequentially in the order of assignment during recruitment, with the names and registration numbers of the participants written on the covers |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were not conducted on an ITT basis and the treatment of missing data was not described Although no study participants were excluded after the substudy began, it is unclear whether additional study participants could have been included in the substudy |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | High risk | The study was completed on a subgroup of the originally randomized study participants. Because a significant proportion of the originally randomized study participants were not included in the substudy, it is unclear if the selection bias prevented by randomization was maintained |
Rogers 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 41; 21 to the exercise group and 20 to the control group Study start and stop dates: recruitment from April 2006 to May 2007 Length of intervention: 12 weeks Length of follow‐up: 3 months after end of the intervention |
|
Participants | Type cancer: breast cancer Cancer stage, Stage I to III, n (%):
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, mean (SD) years:
SES household income, n (%):
Employment status: not reported Comorbidities:
Past exercise history: not reported On hormone therapy:
|
|
Interventions | 21 participants assigned to the exercise group, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: transition from baseline to week 12 to 150 minutes of moderate‐intensity activity Frequency: gradually increased from 3 times per week to 5 times per week Duration of sessions: not reported Duration of program: 12 weeks Total number of exercise sessions: 52 sessions Format: individual exercise; group peer support Facility: facility and home Professionally led: exercise specialists certified (or certification‐eligible) by the American College of Sports Medicine Adherence: participants completed 100% (252/252) of the individual exercise sessions, 95% (60/63) of the individual update sessions, and 98% (123/126) of the group session for overall 99% (435/441) adherence. 6% (4/63) of update sessions were completed by telephone. 20 participants were assigned to the control group, including:
Contamination of control group: not reported |
|
Outcomes | Outcomes: QoL outcomes and physiologic outcomes, including:
Outcomes were measured at baseline, 12 weeks, and 3 months after intervention (6 months after randomization):
Adverse events: None reported |
|
Notes | Country: US Funding: Southern Illinois University School of Medicine Excellence in Academic Medicine Award, Brooks Medical Research Fund, Memorial Medical Center Foundation and Regional Cancer Center |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | "computer‐generated" |
Allocation concealment (selection bias) | Unclear risk | "sealed envelopes" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | The investigators stated that they conducted an ITT analyses, but 2 participants withdrew from the exercise group and 3 from the control group. The authors also reported that the rate of missing data for the FACT‐ES and the FACT‐Cog exceeded the prespecified amount for imputation of values and they analyzed |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Segal 2001.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 123; 40 to the home‐based exercise group, 42 to the supervised exercise group, and 41 to the control group Study start and stop dates: not reported Length of intervention: 26 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer, Stages I and II Time since cancer diagnosis: not reported Time in active treatment: within 2 weeks Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history; "physically active", %:
|
|
Interventions | 40 participants assigned to the home‐based exercise intervention and 40 to the supervised exercise intervention. Both groups included:
The home‐based (self‐directed) exercise group also included:
The supervised exercise group also included:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: 50% to 60% of the predicted maximal oxygen uptake Frequency:
Duration of individual sessions: not reported Duration of exercise program: 26 weeks Total number of exercise sessions: 130 sessions Format: individual Facility: both home and facility Professionally led by an exercise specialist Adherence: not reported 41 participants assigned to control group, including:
|
|
Outcomes | Primary outcome included:
Other outcomes included:
Outcomes were measured at baseline, 13 weeks, and 26 weeks:
Subgroup analysis: treated with chemotherapy versus other treatment Adverse events: none reported |
|
Notes | Country: Canada Funding: National Cancer Institute of Canada, CCS |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Random numbers table |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Values carried forward for withdrawals, and withdrawals balanced across groups: home‐based exercise, 7; supervised, 8; control, 7 |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Segal 2003.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 155; 82 to the exercise group and 73 to the control group Study start and stop dates: September 1999 to August 2001 Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: prostate cancer Stage, n (%):
Time since cancer diagnosis, mean (SD) days:
Time in active treatment: "scheduled to receive androgen deprivation therapy" Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD) years
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history; prior activity level, n (%):
On hormone therapy: not reported |
|
Interventions | 82 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): anaerobic Intensity of the experimental exercise intervention: at 60% to 70% of 1‐repetition maximum, increasing resistance by 5 lb when > 12 repetitions Frequency: 3 times per week Duration of individual sessions: as needed to complete program Duration of exercise program: 12 weeks Total number of exercise sessions: 36 sessions Format: individual Facility: fitness center Professionally led by a certified fitness consultant Adherence: attendance averaged 79% (28 of 36 sessions) 73 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcomes included:
Other outcomes included:
Outcomes were measured at baseline and end of the intervention:
Subgroup analysis:
Adverse events: none reported |
|
Notes | Country: Canada Funding: NCIC. CCS; Heart and Stroke Foundation of Canada; Canadian Institutes of Health Research CCS/NCIC Sociobehavioral Cancer Research Network. |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Table of random numbers |
Allocation concealment (selection bias) | Low risk | "The treatment allocation was concealed from the study coordinator until completion of baseline testing and stratification" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | Study personnel and outcome assessors for the HRQoL outcomes were not masked or blinded to the study interventions. However, blinding was used for physical outcomes "A research assistant with no knowledge of group assignment collected muscular fitness and anthropometric data and scored questionnaire responses" |
Incomplete outcome data (attrition bias) All outcomes | High risk | 8 men in the exercise group and 12 in the control group withdrew |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Segal 2009.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 121; 40 to the aerobic exercise group, 40 to the resistance training exercise group, and 41 to the control group Study start and stop dates: February 2003 to April 2006 Length of intervention: 24 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: prostate cancer Stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment: not reported Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level; completed university or college, n (%):
SES: not reported Employment status; employed full‐time, n (%):
Comorbidities: no reported Past exercise history: not reported On hormone therapy: not reported Weight, mean (SD) kg:
BMI, mean (SD):
|
|
Interventions | 40 participants assigned to the aerobic exercise intervention, including:
40 participants assigned to the resistance exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic or anaerobic Intensity of the aerobic exercise intervention: beginning at 50% to 60% of their predetermined peak oxygen consumption (VO2peak) for weeks 1 to 4 and progressing to 70% to 75% for weeks 5 to 24 Intensity of anaerobic exercise intervention: 60% to 70% of estimated 1‐repetition maximum, increased by 5 lb when more than 12 repetitions Frequency: 3 times per week Duration of individual sessions: initially 15 minutes, increasing by 5 minutes every 3 weeks up to 45 minutes Duration of exercise program: 24 weeks Total number of exercise sessions: 72 sessions Format: individual Facility: facility Professionally led: professionally led by an exercise specialist Adherence: resistance and aerobic participants completed a median of 88% (63 of 72 sessions) and 83% (60 of 72 sessions) of scheduled sessions, respectively 41 participants assigned to control group, including:
Contamination of control group: 6 control participants reported aerobic exercise ≥ 3 times per week |
|
Outcomes | Outcome included HRQoL outcomes of:
Physical outcomes, including:
Outcomes were measured at baseline, 12 weeks, and 24 weeks:
Adverse events: 1 myocardial infarction, 1 syncope in aerobic group, 1 chest pain in resistance group |
|
Notes | Country: Canada Funding: Canadian Prostate Cancer Research Fund |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer generated |
Allocation concealment (selection bias) | Low risk | "Central random assignment was used, with allocation concealment before assignment" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Used mixed model, analyzing data from all participants, 7 withdrew in aerobic exercise group, 3 withdrew in resistance group, and 1 withdrew in control group |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Tang 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 72; 37 to the exercise group and 35 to the control group Study start and stop dates: not reported Length of intervention: 8 weeks Length of follow‐up: 1 and 2 months |
|
Participants | Type cancer, n (%):
Time since cancer diagnosis, mean (SD) years:
Time in active treatment, undergoing cancer treatment, n (%):
Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender, n (%):
Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, mean (SD) years:
SES: not reported Employment status, n (%):
Comorbidities: not reported Past exercise history: not reported On hormone therapy: not reported |
|
Interventions | 37 participants assigned to a walking exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: rating of perceived exertion between 11 and 13, with a rating of 6 = resting and 20 = very, very hard Frequency: 3 times per week Duration of individual sessions: 30 minutes plus 5 minutes warm‐up and 5 minutes cool‐down Duration of exercise program: 8 weeks Total number of exercise sessions: 24 sessions Format: individual Facility: home Not professionally led 35 participants assigned to the control group, including:
Adherence: 32/36 (89%) reached an adherence rate of at least 50%. The mean (SD) number of complete exercise sessions was 20.03 (6.60) Contamination of control group: not reported |
|
Outcomes | Primary outcome:
Secondary outcomes included:
Outcomes were measured at baseline, 1 month, and 2 months:
Subgroup analysis: none specified Adverse events: none reported |
|
Notes | Country: Taiwan Funding: not reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Allocation sequence was generated using a table of random numbers |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | Low risk | The study was analyzed on an ITT basis. Missing observations, including those incurred by participant drop‐outs, were imputed by the "last observation carried forward" method. The disproportionate attrition from the intervention group places the study at a high risk of bias |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Targ 2002.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 181; 93 to the exercise group and 88 to the control group Study start and stop dates: not reported Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Stage, n (%):
Time since cancer diagnosis: within 18 months of diagnosis Time in active treatment: not reported, but some women were on chemotherapy, n (%):
Inclusion criteria:
Eligibility criterion related to interest or ability, or both, to exercise: none reported Exclusion criteria: none reported Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race, n (%):
Education level, n (%):
SES, income, n (%):
Employment status: not reported Comorbidities: not reported Past exercise history, number of days spent exercising and minutes of exercise, mean (SD) days and minutes:
On hormone therapy, n (%):
Post‐menopausal status, n (%):
|
|
Interventions | 93 participants assigned to an intensive lifestyle change and group support program that included:
Type exercise (aerobic/anaerobic): aerobic Intensity of experimental exercise intervention: mild to moderate Frequency: once per week Duration of individual sessions: 90 minutes Duration of exercise program: 12 weeks Total number of exercise sessions: 12 sessions Format: group Facility: facility Professionally led: nurse 88 participants assigned to the control group, including:
Adherence: 6 women did not attend any session, but no other adherence was noted Contamination of control group: not reported |
|
Outcomes | Outcomes: QoL outcomes, including:
Outcomes were measured at baseline and at 12 weeks:
Adverse events: none reported |
|
Notes | Country: US Funding: United States Department of Defense Material Command |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assignment was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Study personnel and outcome assessors were not masked or blinded to the study interventions |
Incomplete outcome data (attrition bias) All outcomes | High risk | Although it was stated that an ITT analysis was performed, there were 7 women who dropped out in the intervention group and 24 in the control group and an additional 27 who did not attend any session and were not included in the analyses |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Vadiraja 2009b.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 88; 44 to the exercise group and to 44 the control group Study start and stop dates: participants were recruited over a 2‐year period from January 2004 to June 2006 Length of intervention: 6 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Cancer stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment: prescribed adjuvant radiation therapy with a cumulative dose of 50.4 Gy with fractionations spread over 6 weeks Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: 94.2% of participants were in "middle class" and remainder were in "upper middle class" Employment status: not reported Comorbidities: not reported Past exercise history: 9% of population had previous exposure to yoga On hormone therapy: not reported |
|
Interventions | 44 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: not reported Frequency: at last 3 sessions 1 hour per week and asked to practice daily at home Duration of individual sessions: 60 minutes Duration of exercise program: 6 weeks Total number of exercise sessions: at least 18 sessions Format: individual Facility: facility and home Professionally led: professionally led by a trained yoga therapist Adherence: adherence to intervention was: 29.7% attended 10 to 20 supervised sessions, 56.7% attended 20 to 25 supervised sessions, and 13.7% attended > 25 supervised sessions over a 6‐week period 44 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. Outcomes included:
Outcomes were measured at baseline and 6 weeks:
Subgroup analysis: none Adverse events: not reported |
|
Notes | Country: India Funding: Central Council for Research in Yoga and Naturopathy, Ministry of Health and Family Welfare, Government of India |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Allocation sequence was generated using computer‐generated computer numbers |
Allocation concealment (selection bias) | Low risk | Randomization was performed using opaque sequentially numbered envelopes |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Analyses were conducted on an ITT basis, which accounted for the substantial attrition from the trial, especially in the control arm |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Wang 2010.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 72; 35 to the exercise group and 37 to the control group Study start and stop dates: participants were recruited between December 2008 and June 2009 Length of intervention: 6 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment: followed participants from 24 hours before surgery to end of the chemotherapy cycle (6 weeks) Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level, n (%):
SES: not reported Employment status, n (%):
Comorbidities: not reported Past exercise history, mean (SD):
Exercise type performed at baseline, n (%):
|
|
Interventions | 35 participants assigned to the exercise group, including a 6‐week home‐based walking program and strategies to boost women's exercise self‐efficacy. The exercise program included the use of:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: low‐ to moderate‐intensity measured by a maximal HR from 40% to 60% or the modified Borg Scale between 0.5 and 2 Frequency: 3 to 5 sessions per week Duration of individual sessions: 30 minutes Duration of exercise program: 6 weeks Total number of exercise sessions: 18 to 30 sessions Format: individual Facility: home Professionally led: not professionally led Adherence: poor compliance (exercise not of low to moderate intensity, < 3 exercise sessions per week, or < 30 minutes per session) were 1 (3.3%), 2 (6.7%), and 2 (6.7%), respectively 37 participants assigned to control group, including:
Contamination of control group: 30.4% (n = 10) participants exercised more than 3 times per week and 30 minutes per session |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Other outcomes included:
Outcomes were measured at baseline, 2 to 3 weeks after surgery (second baseline), 4 weeks, and 6 weeks:
Subgroup analysis: none Adverse events: 2 participants (2.8%) had adverse effects of anemia and dizziness with dyspnea during the program, and both dropped out from the study at weeks 2 and 3, respectively. 3 adverse events in control group: 1 discomfort with exercise, 1 dizziness, 1 dyspnea |
|
Notes | Country: Taiwan Funding: Hebei Department of Hygiene |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assigned was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | Although there was attrition, the author completed a longitudinal repeated measure, which typically would incorporate data for missing values. However, it was not stated whether this was done |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | High risk | Substantial number of control group participants engaging in exercise could place the trial at a high risk of additional biases |
Windsor 2004.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 66; 33 to the exercise group and 33 to the control group Study start and stop dates: December 2001 to December 2002 Length of intervention: to end of radiation therapy Length of follow‐up: 4 weeks' post‐treatment |
|
Participants | Type cancer: prostate cancer; 51 of 65 patients had tumors classified as T1 to T2 Time since cancer diagnosis: not reported Time in active treatment: not begun Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: male Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: not reported Past exercise history: not reported On hormone therapy, receiving adjuvant hormone therapy for high‐risk tumors, n (%):
|
|
Interventions | 33 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: target HR of 60% to 70% calculated maximum HR Frequency: 3 days per week Duration of individual sessions: 30 minutes Duration of exercise program: to end of therapy Total number of exercise sessions: varied Format: individual Facility: home Professionally led: unclear Adherence: all patients in the exercise group recorded at least 1.5 hours of aerobic exercise at the recommended percentage maximum HR per week throughout radiation therapy 33 participants assigned to control group, including:
Contamination of control group: none, the control group showed a small, nonsignificant decline in hours of reported aerobic activity per week during radiation therapy |
|
Outcomes | No primary outcome was identified. Outcomes included:
Outcomes were measured at baseline; after 5, 10, 15, and 20 fractions of radiation therapy; and at follow‐up 4 weeks after the completion of treatment:
Subgroup analysis: none Adverse events: none reported |
|
Notes | Country: UK Funding: none reported |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | The generation of the random sequence was not described |
Allocation concealment (selection bias) | Low risk | "Patients were randomized to trial group by telephone call to the Scottish Cancer Therapy Network randomization line…" |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | 1 participant in the exercise group withdrew and was not included in the analysis |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | High risk | Baseline tests performed after randomization |
Wiskemann 2011.
Study characteristics | ||
Methods | Study design: Multicenter RCT Number randomized: 112; 57 to the exercise group and 55 to the control group Study start and stop dates: recruitment took place starting in May 2007 and the last participant completed the trial in February 2009 Length of intervention: at least 7 to 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer, n:
Time since cancer diagnosis: not reported Time in active treatment, median (range) days:
Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise: not reported Exclusion criteria: not reported Gender, n (%):
Current age, mean (range) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status: not reported Comorbidities: none reported Past exercise history, sedentary (< once per week physically active) at baseline, n (%):
|
|
Interventions | 57 participants assigned to the exercise intervention, including:
Type exercise (aerobic/anaerobic): aerobic and anaerobic Intensity of the experimental exercise intervention: Borg scale target scores of 12 to 14 for endurance and 14 to 16 for resistance exercises Frequency: 3 endurance (up to 5 during hospitalization) and 2 resistance training sessions per week Duration of individual sessions:
Duration of exercise program: length of treatment Total number of exercise sessions: 21 to 36 endurance sessions and 14 to 24 resistance training sessions Format: individual Facility: home and facility based Professionally supervised during the inpatient period and unsupervised during the outpatient period Adherence: from baseline (medical check‐up) until admission = 87.5%; during hospitalization, 83.0%; outpatient period from discharge until study end (6 to 8 weeks later), 91.3% 55 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | Primary outcome was fatigue, assessed using:
Secondary outcomes included:
Outcomes were measured at baseline, at admission to hospital (second baseline), at discharge from hospital, and at 6 to 8 weeks after discharge:
Subgroup analysis: none reported Adverse events: 24 participants (11 in the exercise and 13 in the control group) died |
|
Notes | Country: Germany Funding: German Jose Carreras Leukemia Foundation |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Allocation sequence was generated using the minimization procedure |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assigned was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | Analyses were not conducted on an ITT basis and the treatment of missing data was not described. Although the authors used last observation carried forward for the participants who did not complete the last study visit, they excluded randomized individuals who were considered ineligible after randomization (missing donor, revised diagnosis, contraindications in check‐up, dropped out) |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
Yang 2011.
Study characteristics | ||
Methods | Study design: RCT Number randomized: 44; 19 to the exercise group and 21 to the control group Study start and stop dates: recruitment of participants took place between 2008 and 2009 Length of intervention: 12 weeks Length of follow‐up: to end of the intervention |
|
Participants | Type cancer: breast cancer Cancer stage, n (%):
Time since cancer diagnosis: not reported Time in active treatment: receiving 12 weeks of adjuvant chemotherapy postoperatively Inclusion criteria:
Eligibility criteria related to interest or ability, or both, to exercise:
Exclusion criteria:
Gender: female Current age, mean (SD) years:
Age at cancer diagnosis: not reported Ethnicity/race: not reported Education level: not reported SES: not reported Employment status, employed, n (%):
BMI, mean (SD)
Comorbidities: none reported Past exercise history: not reported |
|
Interventions | 19 participants assigned to the exercise intervention, including:
Type exercise: (aerobic/anaerobic): aerobic Intensity of the experimental exercise intervention: moderate‐intensity brisk walking (60% to 80% of age‐adjusted maximal HR) Frequency: 3 times per week Duration of individual sessions: about 40 minutes Duration of exercise program: 12 weeks Total number of exercise sessions: 36 sessions Format: individual Facility: home Professionally led: not professionally led Adherence: adherence to the exercise intervention was about 77% (31.2 of 36) of the prescribed exercise sessions and 100% of the prescribed exercise intensity 21 participants assigned to control group, including:
Contamination of control group: not reported |
|
Outcomes | No primary outcome was identified. QoL outcomes included:
Other outcomes included:
Outcomes were measured at baseline, 6 weeks, and 12 weeks:
Subgroup analysis: none reported Adverse events: no participants experienced any adverse events related to home‐based exercise during the 12‐week study period |
|
Notes | Country: Taiwan Funding: Taipei Medical University Hospital |
|
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | The random location sequence was generated using a table of random numbers |
Allocation concealment (selection bias) | Unclear risk | Whether the treatment assigned was concealed from study personnel and participants was not described |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Owing to the nature of the intervention, it was not possible to conceal allocation to the intervention from the participants |
Blinding of outcome assessment (detection bias) All outcomes | High risk | Allocation to the intervention was not concealed from the study personnel |
Incomplete outcome data (attrition bias) All outcomes | High risk | 44 women were randomly assigned to exercise or control groups and 40 women completed the trial. No information is provided on the 4 women who did not complete the trial |
Selective reporting (reporting bias) | Low risk | There appears to be no selective reporting of outcomes |
Other bias | Low risk | The trial appears to be free of other problems that could put it at a high risk of bias |
6MWD: 6‐minute walk distance; 7‐Day PAR: Seven‐Day Physical Activity Recall; HR: heart rate; AFI: Attentional Functional Index; ALL: acute lymphoblastic leukemia; AML: acute myelogenous leukemia; BDI: Beck's Depression Inventory; BFI: Brief Fatigue Inventory; BMD: bone mineral density; BMI: body mass index; Borg RPE: Borg Rating of Perceived Exertion; CCS: Canadian Cancer Society; CES‐D: Center for Epidemiological Studies Depression scale; CML: chronic myeloid leukemia; CRP: C‐reactive protein; DXA: dual energy X‐ray absorptiometry; ECOG: Eastern Cooperative Oncology Group; EORTC: European Organization for Research and Treatment of Cancer; EPIC: Expanded Prostate Cancer Index Composite; ESES: Exercise Self‐efficacy Scale; EWB: emotional well‐being; FACIT‐F: Functional Assessment of Chronic Illness Therapy ‐ Fatigue; FACIT‐Sp: Functional Assessment of Chronic Illness Therapy ‐ Spiritual; FACT‐An: Functional Assessment of Cancer Therapy ‐ Anemia; FACT‐B: Functional Assessment of Cancer Therapy ‐ Breast; FACT‐Cog: Functional assessment of Cancer Therapy ‐ Cognitive Function; FACT‐ES: Functional Assessment of Cancer Therapy ‐ Endocrine symptoms; FACT‐F: Functional Assessment of Cancer Therapy ‐ Fatigue; FACT‐G: Functional Assessment of Cancer Therapy ‐ General; FACT‐P: Functional Assessment of Cancer Therapy ‐ Physical; FACT‐P: Functional Assessment of Cancer Therapy ‐ Prostate; FACT‐Sp: Functional Assessment of Cancer Therapy ‐ Spirituality; FAEPEX : Ao Fundo de Apoio ao Ensino, Pesquisa e Entenxao; FLIC: Functional Living Index for Cancer; FWB: functional well‐being; GLTEQ: Goldin Leisure Time Exercise Questionnaire; HADS: Hospital Anxiety and Depression Scale; HDC: high‐dose chemotherapy; HL: Hodgkin lymphoma; HR: heart rate; HRQoL: health‐related quality of life; HSCT: hematopoietic stem cell transplantation; ITT: intention‐to‐treat; LASA: Linear Analog Scales of Assessment; LHRHa: luteinizing hormone‐releasing hormone analogue; LOCF: last observation carried forward; LSI: Leisure Score Index; MANE: Morrow Assessment of Nausea and Emesis; MCS: mental component status; MDASI‐T: M.D. Anderson Symptom Inventory‐Taiwanese Version; MFI: Multidimensional Fatigue Inventory; MFSI‐SF: Multidimensional Fatigue Symptom Inventory Short Form; MMSE: Mini Mental Status Examination; MOS SF‐36: Medical Outcomes 36‐Item Short Form Health Survey; MVT: maximum voluntary torque; MWT: minute walk test; NCIC: National Cancer Institute of Canada; NHL: non‐Hodgkin lymphoma; NYHA: New York Heart Association; PANAS: Positive and Negative Affect Schedule; PCS: physical component status; PFS: Piper Fatigue Scale; POMS: Profile of Mood States; POMS‐SF; Profile of Mood State‐Short Form; PSA: prostate specific antigen; PSQI: Pittsburgh Sleep Quality Inventory; PWB: physical well‐being; QLQ: Quality of Life Questionnaire; QoL: quality of life; ROM: range of motion; rPAR‐Q: revised Physical Activity Readiness Questionnaire; SCFS: Schwartz Cancer Fatigue Scale; SCL: Symptom Check List; SPAQ: Scottish Physical Activity Questionnaire; SPSS Expectation Maximization; STAI: State‐Trait Anxiety Index; SWB: social/family well‐being; SWLS: Satisfaction with Life Scale; TOI‐An: Trial Outcome Index ‐ Anemia; UNICAMP: da Universidade Estadual de Campinas; VAS: visual analog scale; VO2max: maximal oxygen uptake; VYASA: Vivekananda Yoga Anusandhana Samsthana; WHO: World Health Organization; WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index.
Characteristics of excluded studies [ordered by study ID]
Study | Reason for exclusion |
---|---|
Aaronson 2011 | This study was excluded as the exercise was aimed toward reduction in treatment‐induced menopause rather than for improvement in whole body function or QoL |
Adamsen 2006 | This study was excluded as it was not an RCT or a CCT and it did not compare an exercise with no exercise, another intervention, or usual care |
Aghili 2007 | This study was excluded as it was not an RCT or a CCT |
Banasik 2011 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Baumann 2008 | This study was excluded as it was not an RCT or a CCT |
Baumann 2011 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Beurskens 2007 | This study was excluded as the exercise was aimed toward reduction in shoulder dysfunction rather than for improvement in whole body function or QoL |
Bloom 2011 | This study was excluded as the exercise was aimed toward reduction in treatment‐related bone loss rather than for improvement in whole body function or QoL |
Bourke 2011a | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Box 2002 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Box 2009 | This study was excluded as it was not an RCT or a CCT; it did not compare an exercise with no exercise, another intervention, or usual care; and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Carmack Taylor 2004 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Carmack Taylor 2006 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Carmack Taylor 2007 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Chen 2010 | This study was excluded as the exercise was aimed toward reduction in treatment‐related ill limb rather than for improvement in whole body function or QoL, it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Cho 2004 | This study was excluded as it was not an RCT or a CCT |
Cho 2006 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Crevenna 2003 | This study was excluded as it was not an RCT or a CCT, and it only included people who had completed active cancer treatment for either the primary or recurrent cancer |
Culos‐Reed 2007 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Daley 2004 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Daley 2007 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Daley 2007a | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Daubenmier 2006 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Demark‐Wahnefried 2008 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Dhillon 2011 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
Dimeo 1997 | This study was excluded as it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Dimeo 2004 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Dong 2006 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer; it did not compare an exercise with no exercise, another intervention, or usual care; and the exercise intervention was initiated after completion of active treatment |
Duijts 2009 | This study was excluded as the exercise was aimed toward reduction in treatment‐induced menopause rather than for improvement in whole body function or QoL |
Duijts 2009a | This study was excluded as the exercise was aimed toward reduction in treatment‐induced menopause rather than for improvement in whole body function or QoL |
Duijts 2010 | This study was excluded as the exercise was aimed toward reduction in treatment‐induced menopause rather than for improvement in whole body function or QoL |
Duijts 2010a | This study was excluded as the exercise was aimed toward reduction in treatment‐induced menopause rather than for improvement in whole body function or QoL |
Eyigor 2010 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
Frattaroli 2008 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Galantino 2003 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Galvao 2006 | This study was excluded as it was not an RCT or a CCT; it did not compare an exercise with no exercise, another intervention, or usual care; and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Greenfield 2010 | This study was excluded as it was not an RCT or a CCT; it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; the exercise intervention was initiated after completion of active treatment; and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Guo 2004 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Haines 2010 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Hartmann 2007 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Hayes 2004 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, it did not exclude people below the age of 18 years, and the exercise intervention was initiated after completion of active treatment |
Hayes 2011 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Heim 2007 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Heim 2011 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Heislein 2009 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Henderson 2012 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Herdman 1995 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer; the exercise intervention was initiated after completion of active treatment; and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Herold 2010 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Houborg 2006 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Irwin 2008 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer; the exercise intervention was initiated after completion of active treatment; and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
John 2007 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Jones 2008 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Jones 2010 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Kampshoff 2010 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Kilbreath 2006 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer; the exercise intervention was initiated after completion of active treatment; and the exercise was aimed toward reduction in lymphedema rather than for improvement in whole body function or QoL |
Kilbreath 2006a | This study was excluded as the exercise was aimed toward reduction in shoulder dysfunction rather than for improvement in whole body function or QoL |
Knols 2011 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Koller 2006 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Korstjens 2008 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Latka 2009 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Lau 2010 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Le Vu 1997 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Lee 2007a | This study was excluded as the exercise was aimed toward reduction in shoulder dysfunction rather than for improvement in whole body function or QoL |
MacVicar 1989 | This study was excluded as it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Manassero 2007 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Marchese 2004 | This study was excluded as it did not exclude people below the age of 18 years |
Mathewson‐Chapman 1997 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care, and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
McClure 2010 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
McKenzie 2003 | This study was excluded as the exercise was aimed toward reduction in lymphedema rather than for improvement in whole body function or QoL |
Mehnert 2011 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Midtgaard 2005 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Mina 2010 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Newton 2011 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
O'Brien 2003 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Park 2006 | This study was excluded as it was not an RCT or a CCT |
Patel 2005 | This study was excluded as there was no exercise intervention, the exercise included 10 to 15 minutes of gentle stretching |
Peddle 2009 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Penttinen 2009 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Persoon 2010 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Pickett 2002 | This study was excluded as it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Pinto 2003 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Pinto 2005 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Roscoe 2005 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
San Juan 2008 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care; it did not exclude people below the age of 18 years; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
Scheier 2005 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
Schwartz 1999 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Schwartz 2000 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Schwartz 2009 | This study was excluded as it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Sekse 2011 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Shelton 2009 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer; the exercise intervention was initiated after completion of active treatment; and it did not compare an exercise with no exercise, another intervention, or usual care |
Stephenson 2000 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
Thorsen 2005 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
Todd 2008 | This study was excluded as the exercise was aimed toward reduction in lymphedema rather than for improvement in whole body function or QoL |
Turner 2004 | This study was excluded as it was not an RCT or a CCT; it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
Ulger 2010 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Vallance 2008 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
Vardy 2010 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer, and the exercise intervention was initiated after completion of active treatment |
von Gruenigen 2009 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care |
von Gruenigen 2011 | This study was excluded as it was not an RCT or a CCT, and it did not compare an exercise with no exercise, another intervention, or usual care |
Wang 2005 | This study was excluded as it only included people who had completed active cancer treatment for either the primary or recurrent cancer; the exercise intervention was initiated after completion of active treatment; and it did not measure overall HRQoL or an HRQoL domain as a study outcome |
Xie 2010 | This study was excluded as the exercise was aimed toward upper limb function rather than for improvement in whole body function or QoL |
Zhang 2006 | This study was excluded as it did not compare an exercise with no exercise, another intervention, or usual care; it only included people who had completed active cancer treatment for either the primary or recurrent cancer; and the exercise intervention was initiated after completion of active treatment |
CCT: controlled clinical; HRQoL: health‐related quality of life; QoL: quality of life; RCT: randomized controlled trial.
Characteristics of studies awaiting classification [ordered by study ID]
Courneya 2001.
Methods | RCT |
Participants | 96 participants with colorectal cancer (treatment status unknown) |
Interventions | Fitness/exercise, details not provided on the intervention and comparison arm |
Outcomes | HRQoL outcomes included psychological distress (anxiety, depression, fatigue) and well‐being (physical, functional, emotional) |
Notes | Published abstract |
Harandi 2010.
Methods | RCT |
Participants | 63 women with breast cancer (treatment status unknown) |
Interventions | Home‐based exercise therapy compared with control group |
Outcomes | QoL assessed using the QLQ‐C30 and QLQ‐BR23 |
Notes | Published abstract |
Sun 2009.
Methods | RCT |
Participants | 240 women with breast cancer receiving chemotherapy |
Interventions | Exercise intervention (specifics not provided) |
Outcomes | Fatigue |
Notes | Published report |
Utz‐Billing 2010.
Methods | RCT |
Participants | 93 women who had breast cancer surgery (breast‐sparing therapy or mastectomy) |
Interventions | Yoga classes compared with waiting list control |
Outcomes | QoL assessed by QLQ‐C23, physical function assessed by FACT‐B (Version 4), and disabilities of upper limbs (DASH) |
Notes | Published abstract |
DASH: ; FACT‐B: Functional Assessment of Cancer Therapy ‐ Breast; HRQoL: health‐related quality of life; QLQ‐C23; QLQ‐C30: QLQ‐BR23; QoL: quality of life; RCT: randomized controlled trials
Characteristics of ongoing studies [ordered by study ID]
Christensen 2011.
Study name | PROTRACT |
Methods | RCT |
Participants | Men with testicular cancer undergoing 3 cycles of combination chemotherapy with bleomycin, etoposide, and cisplatin (BEP) |
Interventions | HIPRT compared to standard care |
Outcomes | Primary outcomes include mean fiber area and fiber type composition measured by histochemical analyses, satellite cells and levels of protein and mRNA expression of intracellular mediators of protein turnover. Secondary outcomes include maximum muscle strength and muscle power measured by maximum voluntary contraction and leg‐extensor‐power tests, body composition assessed by DXA scan, and systemic inflammation analyzed by circulating inflammatory markers, lipid and glucose metabolism in blood samples. HRQoL outcomes assessed using the QLQ‐C30 and SF‐36 |
Starting date | Not reported |
Contact information | Jesper F Christensen, University Hospital Centre for Nursing and Care Research, Copenhagen University Hospital, Blegdamsvej 9, 2100 Copenhagen, Denmark |
Notes | Published protocol. Trial Registration: Current Controlled Trials ISRCTN32132990 |
Galvao 2009.
Study name | RADAR |
Methods | RCT |
Participants | Cohort undergoing or previously treated for prostate cancer involving androgen deprivation therapy |
Interventions | Supervised resistance/aerobic exercise compared to standard physical activity recommendation |
Outcomes | Outcomes include aerobic walking capacity, anthropometric measures (abdominal obesity), various blood markers, self‐reported physical activity, HRQoL assessed using the QLQ‐C30, falls self‐efficacy assessed using the activities‐specific balance, psychological distress assessed using the BSI, nutrition, and lower body physical function. In addition, at 1 of the study sites, additional outcomes assessed include body composition, muscle strength, balance, and risk of falling |
Starting date | Not reported |
Contact information | Daniel A. Galvao, Vario Health Institute, School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia |
Notes | Published protocol. Trial Registration: ACTRN 12609000729224 |
Haseen 2010.
Study name | Dietary and physical activity intervention for prostate cancer patients |
Methods | RCT |
Participants | Prostate cancer survivors receiving ADT |
Interventions | Dietary modification and physical activity compared to standard care |
Outcomes | Primary outcomes include body composition, fatigue assessed using the FSS, and QoL assessed using the FACT‐P. Secondary outcomes include nutrient intake, physical activity and perceived stress assessed using the PSS‐10 |
Starting date | Not reported |
Contact information | Farhana Haseen, Centre for Public Health, Queen's University Belfast, Northern Ireland, UK |
Notes | Published protocol. Trial registration: ISRCTN trial number ISCRTN75282423 |
Newton 2009.
Study name | Exercise modalities on treatment side‐effects in men receiving therapy for prostate cancer |
Methods | RCT |
Participants | Men undergoing treatment for prostate cancer involving ADT |
Interventions | (1) Resistance/impact loading exercise, (2) resistance/cardiovascular exercise groups, or (3) usual care/delayed exercise |
Outcomes | Primary outcomes include whole body and hip and spine BMD, body composition, cardiorespiratory capacity, blood pressure and arterial stiffness, and blood markers. Secondary outcomes include muscle strength and endurance, physical function, balance and risk of falling, physical activity, QoL, and psychological distress. QoL assessed using the QLQ‐C30 and QLQ‐PR25 as well as a health history questionnaire, and psychological distress (anxiety, depression, and somatization) assessed using the BSI‐18 |
Starting date | Not reported |
Contact information | Robert U Newton, Vario Health Institute, Edith Cowan University, Joondalup, WA, Australia |
Notes | Published protocol. Clinical Trial Registry: ACTRN12609000200280 |
van Waart 2010.
Study name | PACES |
Methods | RCT |
Participants | Participants with breast or colon cancer receiving adjuvant chemotherapy |
Interventions | (1) Onco‐Move, a relatively low‐intensity, home‐based, individualized, self‐managed physical activity program, (2) OnTrack, a relatively high‐intensity exercise program that is supervised by a physical therapist in an outpatient or general physical therapy practice setting, or (3) usual care |
Outcomes | Primary outcomes include cardiorespiratory fitness, muscle strength, and fatigue assessed using the MFI and the FQL. Secondary outcomes include mood disturbance assessed using the HADS, quality of sleep assessed using the PSQI, HRQoL assessed using the QLQ‐C30, functioning in daily life, measured physical activity level, self‐reported physical activity level, and anthropometric measures |
Starting date | Not reported |
Contact information | Hanna van Waart, The Netherlands Cancer Institute, Division of Psychosocial Research and Epidemiology, Amsterdam, The Netherlands |
Notes | Published protocol. Trial registration: The Netherlands Trial Register (NTR 2159) |
Velthuis 2010.
Study name | PACT |
Methods | RCT |
Participants | Participants with breast or colon cancer undergoing cancer treatment |
Interventions | An 18‐week supervised group or control group asked to maintain their habitual physical activity pattern |
Outcomes | Primary outcome is fatigue assessed using the MFI and the FQL. Secondary outcomes include HRQoL assessed using the EORTC QLQ‐C30 (Version 3) and the SF‐36, perceived impact of the disease on participation and autonomy assessed using the IPA questionnaire, anxiety and depression assessed using the Dutch language version of the HADS, physical fitness, BMI, body fat distribution, self efficacy about the performance of physical activity, and physical activity level |
Starting date | Not reported |
Contact information | Miranda J Velthuis, Comprehensive Cancer Center Middle Netherlands, Utrecht, the Netherlands |
Notes | Published protocol. Trial registration: Current Controlled trials ISRCTN43801571, Dutch Trial Register NTR2138 |
ADT: androgen deprivation therapy; BMD: bone mineral density; BMI: body mass index; BSI‐18: Brief Symptom Inventory‐18; DXA: dual energy X‐ray absorptiometry; DCIS: ductal carcinoma in situ; EORTC: European Organization for Research and Treatment of Cancer: FACT‐P: Functional Assessment of Cancer Therapy ‐ prostate; Functional Assessment of Cancer Therapy ‐ Prostate; FQL: Fatigue Quality List; FSS: Fatigue Severity Scale; GED: general educational development; HADS: Hospital Anxiety and Depression Scale; HIPRT: high‐intensity progressive resistance training; HRQoL: health‐related quality of life; IPA: Impact on Participation and Autonomy; MFI: Multidimensional Fatigue Inventory; PSQI: Pittsburgh Sleep Quality Index; PSS‐10: Perceived Stress Scale; EORTC QLQ‐C30: European Organization for Research and Treatment of Cancer: Quality of Life Questionnaire‐C30; QoL: quality of life; RCT: randomized controlled Trial; SF‐36: Short Form‐36.
Differences between protocol and review
This review included trials that included both participants who were undergoing active cancer treatment for their primary or recurrent cancer and those who had completed active treatment for their cancer. This revised inclusion criteria was applied to studies that did not have the majority of participants who had completed active treatment for their primary or recurrent cancer.
We have included a Table 1 instead of calculating number needed to treat for an additional beneficial outcome (NNTB) for the review findings.
Contributions of authors
Shiraz I. Mishra: content expert; contributed by conceptualization of the project, identifying trials eligible for the review, extracting data for trials meeting the eligibility criteria, preparing data tables, analyzing the data, and writing the review.
Roberta W. Scherer: methodologic expert; contributed by identifying trials eligible for the review, extracting data for trials meeting the eligibility criteria, preparing data tables, analyzing the data, and writing the review.
Claire Snyder: content expert; contributed by identifying trials eligible for the review, extracting data for studies meeting the inclusion criteria, interpreting the HRQoL measures, and providing editorial input.
Paula M. Geigle: content expert; contributed by extracting data for trials meeting the inclusion criteria and providing editorial input.
Debra R. Berlanstein: information specialist, contributed to development of the search strategy, conducting all the electronic database searches, and retrieving potentially eligible trials.
Ozlem Topaloglu: contributed by extracting data for trials meeting the inclusion criteria.
Sources of support
Internal sources
None, Other
External sources
-
National Institute for Health Research (NIHR) Health Technology Assessment programme, UK
HTA Project: 10/81/01 ‐ Exercise interventions for the management of health related quality of life and fatigue in cancer survivors during and after treatment
Declarations of interest
The authors declare no conflict of interest.
Edited (no change to conclusions)
References
References to studies included in this review
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Raghavendra 2007 {published data only}
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