title: A symposium: beta blockers and exercise. Introduction.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D005082:Physical Exertion; D012119:Respiration / Q000187:drug effects*
chemical_list: D000319:Adrenergic beta-Antagonists