Therapeutic effects of individual physical therapy in ankylosing spondylitis related to duration of disease

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Abstract
Physical therapy in ankylosing spondylitis (AS) is considered important for maintaining or improving mobility, fitness, functioning, and global health. We studied the influence of disease duration on the short term effects of supervised individual therapy. One hundred forty-four AS outpatients (modified New York Criteria; mean age: 43 years; median duration of disease: 4 years; range: 0–33) received 12 supervised individual treatments in a 6-week course of 30 minutes. Endpoints were: spinal mobility (thoracic and lumbar flexion and extension, chest expansion, cervical rotation), fitness (maximum work capacity by ergometry), functioning (Sickness Impact Profile (SIP) and the Functional Index (FI)), and global patient assessment of change on a visual analogue scale. After 6 weeks patients had improved in all endpoints, but only significantly in rotation (8 degrees, 10%), fitness (6 watt, 4%), and SIP (0.6, 14%; t-test, p0.05). In addition, no relevant correlation was found between change scores and disease duration (p>0.01). It may be concluded that irrespective of disease duration, short term supervised individual therapy is effective in AS, slightly improving mobility, fitness, functioning and global health.