One Year of Pilates Training for Ankylosing Spondylitis: A Pilot Study

Objectives: This prospective long-term study examines the effects of a Pilates training intervention on spinal mobility, disease activity, and functional capacity in patients with ankylosing spondylitis (AS). Design: The study design was quasi experimental and single blind. Subjects: 11 subjects were recruited among patients undergoing followup of AS diagnosed according to modified New York criteria at the rheumatology clinic. Interventions: Over a 12-month period, 11 patients completed a training program consisting of two sessions per week of selected Pilates exercises. There was no control group. Outcome measures: The primary outcome variable was functional capacity measured using the Bath Ankylosing Spondylitis Functional Index (BASFI) questionnaire. Exploratory outcome measures were Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Bath Ankylosing Spondylitis Metrology Index (BASMI), and chest expansion and fingertip-to-floor (FTF) test. Baseline and follow-up examinations were performed immediately before the intervention and during the course of treatment at 4, 8, and 12 months. Results: After the exercise intervention, improvements were observed in BASFI (77.51%), BASDAI (64.39%) and BASMI (58.95%) scores, FTF distance (71.92%), and chest expansion (88.74%). Conclusions: These findings suggest that Pilates training could be useful in AS patients and provide direction for larger controlled trials designed to determine the therapeutic benefits of Pilates in the management of these patients.