Granacher 2009.

Methods	Type of study: RCT
Participants	Number of participants randomised: 40 Losses: none reported Age: 67 (SD 1) years Sex: men Residential status of participants: community dwelling Health status as defined by authors: healthy Setting: Switzerland Inclusion: age 60 to 80 years, healthy with no history of serious muscular, neurological, cardiovascular, metabolic or inflammatory diseases. Exclusion:
Interventions	EXERCISE GROUP (STRENGTH) (n = 20): warm up, cycle. 80% 1 RM (repetition maximum) leg press, leg extension, calf raise, foot dorsi flexors. 3 sets of 10 reps. CONTROL GROUP (n = 20): usual activity Duration and intensity:1hr sessions, 3 x week, 13 weeks Supervisor: sport scientist Supervision: individual Setting: clinic
Outcomes	FRT (cm) Tandem walk forward (number of steps) Tandem walk backwards (number of steps) Compliance/adherence: not reported Adverse events: none reported
Notes	Data not reported appropriately for analysis purposes.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Radmomisation mentioned but method not stated
Allocation concealment (selection bias)	Unclear risk	Insufficient information to permit judgement
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Data reported for total sample
Selective reporting (reporting bias)	Unclear risk	Insufficient information to permit judgement
Other bias	Low risk	The study appears to be free of other sources of bias
Blinding (participant)	High risk	Not possible
Blinding (assessor)	Unclear risk	Not reported
Were the treatment and control group comparable at entry?	Unclear risk	Insufficient information to permit judgement
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.