Chang 2007.

Methods	Type of study: RCT
Participants	Number of participants randomised: 21 Losses: one reported in exercise group Age: 74 to 93 years Sex: not reported Health status as defined by authors: at increased risk of falls Residential status of participants: community dwelling Setting: USA Inclusion: at increased risk of falls Exclusion:not reported
Interventions	EXERCISE GROUP (STRENGTH): lateral trainer, high velocity resistance training CONTROL GROUP: usual activity Duration and intensity: 3 x per week for 10 weeks Supervisor: not stated Supervision: not stated Setting:not reported
Outcomes	Four square step test Walking Speed Single leg stance Compliance/adherence:exercise group attended at least 85% of sessions (at least 25 sessions) Adverse events: No adverse events reported
Notes	Abstract only available. No appropriate data reported
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)	Unclear risk	Insufficient information to permit judgement
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Insufficient reporting of attrition/exclusions to permit judgement
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	Insufficient information to permit judgement
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.