title: beta-Adrenoceptor blockers, plasma-potassium, and exercise.
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D006947:Hyperkalemia / Q000139:chemically induced; D008790:Metoprolol / Q000494:pharmacology*; D005082:Physical Exertion; D010919:Placebos; D011188:Potassium / Q000097:blood*; D011412:Propanolamines / Q000494:pharmacology*; D011433:Propranolol / Q000494:pharmacology*; D012107:Research Design; D012146:Rest
chemical_list: D010919:Placebos; D011412:Propanolamines; D011433:Propranolol; D008790:Metoprolol; D011188:Potassium