title: Distinguishing cardiac versus pulmonary limitation in exercise performance.
mesh_terms: D005080:Exercise Test; D006321:Heart / Q000503:physiopathology*; D006331:Heart Diseases / Q000503:physiopathology; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008171:Lung Diseases / Q000503:physiopathology