Cheung 2007.
| Methods | Type of study:RCT | |
| Participants | Number of participants randomised:75 Losses: 6 Age: 60 or above Sex: women Health status defined by authors: healthy Residential status of participants: community living elderly women Setting: Hong Kong Inclusion: 60 years or over; able to stand independently without aids Exclusion: hormonal replacement or drug treatment affecting normal metabolism; hypo or hyper thyroidism renal liver or chronic disease; previous or current smokers or drinkers; habitual exercise or participate in exercise. |
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| Interventions | EXERCISE GROUP (VIBRATION) (n = 50): Whole body vibration CONTROL GROUP (n = 25): No intervention Duration and intensity: 3mins/day; 3days/week; 3 months Supervisor: research assistant Supervision: one to one Setting: community centre |
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| Outcomes | Limits of stability assessed on a Basic Balance Master system. Measured parameters included: reaction time (s); movement velocity (deg/s); endpoint excursion (% limits of stability); maximum point excursion (% limits of stability); directional control (% accuracy) Functional reach (cm) Compliance/adherence:defined as number of treatment sessions attended over total number of treatment sessions was recorded by research assistant. Described = 93.3% compliance in exercise group Adverse events: not reported |
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| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | Insufficient information to permit judgement |
| Allocation concealment (selection bias) | Low risk | Independent RA using sealed envelope |
| Incomplete outcome data (attrition bias) All outcomes | High risk | Drop outs described but not addressed in data analysis |
| Selective reporting (reporting bias) | Unclear risk | Insufficient information to permit judgement |
| Other bias | Unclear risk | Different group size (50 and 25) |
| Blinding (participant) | High risk | Not possible |
| Blinding (assessor) | Unclear risk | Insufficient information to permit judgement |
| Were the treatment and control group comparable at entry? | Low risk | No differences reported on baseline characteristics with a potential to influence the effect of the intervention |
| Was the surveillance active, and of clinically appropriate duration (i.e. at least 3 months post intervention)? | High risk | Only immediately post intervention data, no follow‐up data reported |