TY - GEN AU - Leier,C V AU - Nelson,S AU - Magorien,R D AU - Boudoulas,H AU - Gibb,L AU - Unverferth,D V TI - Heart rate responsiveness after sustained chronotropic stimulation with a beta 1-adrenergic receptor agonist SN - 0022-2143 PY - 1983///0708 KW - 2-Hydroxyphenethylamine KW - analogs & derivatives KW - Adult KW - Blood Pressure KW - drug effects KW - Cardiotonic Agents KW - pharmacology KW - Heart Rate KW - Humans KW - Isoproterenol KW - Male KW - Phenethylamines KW - Physical Exertion N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S ER -