• Balance was measured with Walking in a Figure of Eight. Strength and endurance were measured by Timed-Stands test. Shoulder function was measured with Assessments of Shoulder Movement Impairment Scale. [ Time Frame: 15 min ]
  

• Blood samples were collected for determination of sedimentation rate (ESR) and C-reactive protein (CRP). A rheumatologist examined the patients with the number of 28 swollen and tender joints. [ Time Frame: 15 min ]
  
• Self-reported health status included Health Assessment Questionnaire, visual analogue scale for fatigue, muscle pain, and fear of falling, Short Form Health Survey and Arthritis Self-Efficacy Scale [ Time Frame: 15 min ]
  
• Focus group interview in order to capture the participants' experiences and perceptions with Tai Chi. [ Time Frame: 1 hour ]
  

Rheumatoid arthritis (RA) is a chronic, inflammatory and systemic disease that mainly affects the musculoskeletal system. The disease is often progressive and may result in reduced physical function, pain, fatigue, and joint destruction. Exercise programs are reported to improve physical functioning in patients with RA.

Tai Chi is a traditional Chinese martial art that was developed in the 13th century, and combines slow and gentle movements with mental focus.

The aim of this study was to examine the impact of a 12 weeks standardized Tai Chi group exercise program on disease activity, physical function and health status in patients with RA attending. Further, the patients experiences of possible effects of Tai Chi were to be obtained in a focus group interview.

Inclusion Criteria:

• Diagnosis of RA according to the American College of Rheumatology (ACR) 1987
• Stable medical treatment
• No earlier experience with Tai Chi

Exclusion Criteria:

• Lack of ability to bear weight on the lower extremities
• Recent or ongoing disease flare
• Unstable heart condition
• Participation in other physical exercise interventions more than twice a week included in other intervention studies.