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. 2012 Aug 15;2012(8):CD008465. doi: 10.1002/14651858.CD008465.pub2

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:
  • patients scheduled to receive an HSCT

  • ability to speak English

  • ability to comprehend the purpose of the study

  • no history of psychiatric illness

  • treating physicians provided approval for participants to participate in the trial


Eligibility criteria related to interest or ability, or both, to exercise:
  • none reported


Exclusion criteria:
  • none reported


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:
  • progressive strength‐training intervention, including a comprehensive program of progressive resistance to strengthen the upper body, lower body, and abdominal muscles using elastic resistance bands (Thera‐Bands; Hygenic Corp) if able, and body weight for resistance. Progression of the exercise prescription was structured to first increase the number of sets from 1 to 2 sets of 8 to 10 repetitions and then to increase the resistance level of elastic bands. Preselected exercises with concentric and eccentric muscle contractions included:

    • 8 exercises using elastic resistance bands (chest fly, biceps curl, triceps extension, shoulder shrug, shoulder upright row, shoulder lateral raise, knee flexion, and knee extension)

    • 3 exercises that used body weight as resistance (wall push‐ups, squats, and bed sit‐ups)


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:
  • usual activities

  • recommendations regarding rest, physical activity, and exercise from their attending HSCT physician

  • request not to exercise


Contamination of control group: not reported
Outcomes No primary outcome was identified. QoL outcomes included:
  • fatigue, assessed using a 1‐item fatigue intensity scale and the fatigue subscale of the QLQ‐C30

  • Health Status Perceptions, assessed using the QLQ‐C30 and including:

    • global HRQoL

    • physical

    • emotional

    • role

    • cognitive

    • social

    • symptoms (fatigue, pain, nausea/vomiting)

    • single‐item questions (appetite loss, constipation, dyspnea, diarrhea, financial stress, and sleep disturbances)

  • Life Satisfaction, assessed using the Ferrans and Powers QLI and subscales, including:

    • global HRQoL

    • health and functioning

    • psychological/spiritual

    • social and economic

    • family


Other outcomes included:
  • physical activity, measured using a wrist‐worn accelerometer, the Actiwatch‐Score (Phillips Respironics)

  • muscle strength consisting of timed stair climb, handgrip strength, 30‐s chair‐stand, time needed to stand up from bed rest examination


Outcomes were measured at baseline, 8 days after transplant (second baseline), and 6 weeks after discharge from the hospital:
  • exercise group: n = 9 at baseline, n = 8 at 8 days, n = 8 at 6 weeks

  • control group: n = 10 at baseline, n = 9 at 8 days, n = 7 at 6 weeks


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