title: The respiratory muscles in chronic obstructive pulmonary disease (COPD).
mesh_terms: D001945:Breathing Exercises; D003964:Diaphragm / Q000473:pathology; D004417:Dyspnea / Q000503:physiopathology; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000473:pathology / Q000503:physiopathology*; D009132:Muscles / Q000473:pathology / Q000503:physiopathology*; D010807:Physical Endurance; D012119:Respiration; D012131:Respiratory Insufficiency / Q000503:physiopathology / Q000628:therapy; D012137:Respiratory System / Q000503:physiopathology*; D014939:Work of Breathing