RESUMO
OBJECTIVES: Arm strength training may improve functional performance for patients with chronic obstructive pulmonary disease (COPD). This trial investigated the effects of arm strength training on arm exercise capacity, activities of daily living (ADL) and occupational performance in patients with COPD. METHODS: These was a randomized controlled trial in an outpatient clinic. Forty-two stable patients with COPD were randomly assigned into treatment and control groups. The treatment group underwent an 8-week (23 sessions) arm strength training programme. Both groups completed daily breathing exercises at home. Tests included hand grip strength, arm ergometer test, the Glittre-ADL and ADL Simulation tests and measures included the Milliken ADL Scale (MAS) and the Canadian Occupational Performance Measure (COPM). RESULTS: Statistically significant increases were detected in hand grip strength and %hand grip strength values, peak arm ergometer workload and the number of ADL simulation test cycles for the treatment group (P < 0.05). Significant decreases were also found in dyspnea and arm fatigue perception during arm ergometer test, and heart rate and dyspnea perception during Glittre-ADL test in the treatment group (P < 0.05). The treatment group also showed significant increases in MAS-house cleaning and laundry and MAS-other activities integrated scores and COPM-performance and satisfaction scores (P < 0.05). CONCLUSIONS: Arm strength training increases peripheral muscle strength, arm exercise capacity, ADL performance and patients' ADL performance satisfaction. Training decreases dyspnea and arm fatigue perception during supported arm exercises, and dyspnea perception during ADL. Arm strength training is a reliable and feasible treatment for COPD patients.