Chiu KL, et al. - In this study with 97 people with chronic obstructive pulmonary disease (COPD), researchers assessed the benefits of pulmonary rehabilitation (PR) according to respiratory muscle strength in these patients. Maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), pulmonary function tests, the cardiopulmonary exercise test, and the St. George's Respiratory Questionnaire were used to evaluate the participants. Participants were categorized into 4 groups: 1 (normal MIP and MEP); 2 (low MIP); 3 (low MEP); and 4 (low MIP and MEP), and underwent PR for 3 months. Worse dyspnea, lower exercise capacity, and poorer health-related quality of life (HRQoL) at baseline were observed among patients with respiratory muscle weakness. Improvement in respiratory muscle strength with concurrent improvement in exercise capacity, HRQoL, and dyspnea score was evident as the consequence of exercise training. Greater benefits of PR were observed in participants with both poor baseline MIP and MEP.