A randomised controlled trial carried out in the USA has evaluated the effectiveness of a six-week tai chi course in reducing symptoms, increasing function and improving psychosocial status in arthritis patients. In the largest study to date carried out under the Arthritis Foundation Tai Chi program, 332 participants were randomly assigned to treatment or a waiting list control. The tai chi intervention consisted of 12 movements from Sun style tai chi, which included exercises to improve mobility, breathing and relaxation. Participants in the tai chi program showed improvements in pain, fatigue, stiffness, wellbeing and ability to reach. (Evaluation of Tai Chi Course Effectiveness for People with Arthritis. 2010 Annual Scientific Meeting of the American College of Rheumatology, Abstract 690).

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