Tai Chi for independent living: RCT of efficacy of Tai Chi in delaying disability among older people.

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This study addresses the issue of disability among our ageing population. Preservation of function among our older citizens, and their capacity to live independently, is of significant social, public health and economic benefit. The aims of this study are to (1) test the efficacy of Tai Chi in delaying disability among older people, prior to its onset, (2) investigate the mechanisms by which Tai Chi intervenes in the disability pathway, (3) determine the cost-benefits of Tai Chi for older people. The study will recruit 670 people over 70 years of age and randomly assign them to receive either Tai Chi, or a stretching and relaxation program, for a period of 48 weeks. The groups will then be compared to determine if there is any difference in the development of disability as well as a range of functional outcomes such as strength, balance, depression, arthritic symptoms, life satisfaction, and falls. This will be the first study world-wide to test the impact of any exercise program on delaying the manifestation of disability among older people. Robust evidence that Tai Chi can in fact delay disability will have immediate and significant implications for the maintenance of independence among older people at a critical time for our ageing population. Translation of these research results to practice will decrease demand for support services for community dwelling older people, and for places in supported accommodation facilities. Older people will have improved quality of life, and government and non-government agencies will experience reduced demand for limited resources. This internationally significant study will also contribute to understanding the mechanisms by which disability develops, and create the valuable opportunity for continuing research on attrition of effect and long term adherence to exercise programs.