| http://www.w3.org/ns/prov#value | - Subjects are excluded if they have: 1. prior experience with Tai Chi or other similar types of complementary and alternative medicine such as Qi Gong, yoga or acupuncture; 2. cardiovascular or other severe disease limitations precluding full participation, as determined by the patient's primary care provider; 3. any intra-articular steroid injections in the previous 3 months or reconstructive surg
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