title: Limitation to exercise tolerance in chronic obstructive pulmonary disease: look to the muscles of ambulation.
authors.forename: Richard
authors.initials: R
authors.lastname: Casaburi
mesh_terms: D005081:Exercise Therapy; D017079:Exercise Tolerance / Q000502:physiology*; D006801:Humans; D008124:Locomotion / Q000502:physiology; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*