title: Reduction of maximal exercise heart rate at altitude and its reversal with atropine.
mesh_terms: D000328:Adult; D000531:Altitude; D001285:Atropine / Q000494:pharmacology*; D004562:Electrocardiography; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D010100:Oxygen; D010101:Oxygen Consumption; D005082:Physical Exertion
chemical_list: D001285:Atropine; D010100:Oxygen