%0 Journal Article %K Peer Reviewed Paper %B Arthritis and Rheumatism %D 2007 %F MSjournal %G eng %L Y %P 407-414. %T Physical activity for osteoarthritis management: a randomized controlled clinical trial evaluating hydrotherapy or Tai Chi classes %V 57 %1 7.751 %2 7.677 %! Arthritis Rheum.Arthritis Rheum.