ACTRN12607000018415.

Study name	An evaluation of the Accident Compensation Corporation (ACC) Tai Chi programme in older adults: does it reduce falls
Methods	RCT. Central randomisation using specialist computer program (see: http://www.randomization.com/), stratified by site and blocked to ensure balanced numbers over the 3 interventions.
Participants	Target sample size: 684 Inclusion criteria: men and women; over 65 years (55 years if Maori or Pacific Islander); history of at least 1 fall in the previous 12 months or have a falls risk factor according to the Falls Risk Assessment Tool (FRAT) Exclusion criteria: unable to walk independently (with or without walking aid), chronic medical condition that would limit participation in low‐moderate exercise, severe cognitive limitations (telephone Mini Mental State Examination score < 20), currently participating in an organised exercise programme of equivalent intensity as the study intervention
Interventions	All training sessions are of 1 hour duration for a 20‐week period 1. Intervention: Tai Chi training 1 x week 2. Intervention: Tai Chi training 2 x week 3. Control: flexibility training 1 x week
Outcomes	Falls at 20 wks, 6 months and 12 months
Starting date	30 August 2006 (closed; follow‐up continuing)
Contact information	Dr Denise Taylor Physical Rehabilitation Research Centre School of Physiotherapy Auckland University of Technology (AUT) Akoranga Campus Northcote Auckland Telephone: +64 9 9219680 Email: denise.taylor@aut.ac.nz
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