Control of heart-rate in healthy young men.
D000293:Adolescent; D000328:Adult; D001285:Atropine / Q000494:pharmacology; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D008297:Male; D005082:Physical Exertion; D011433:Propranolol / Q000494:pharmacology
D001285:Atropine; D011433:Propranolol