heart rate , arterial pressure and cardiac output were recorded in eight healthy male volunteers during exposure to 80 mmhg of lower body negative pressure ( lbnp ) in the supine position before and after beta-adrenergic and combined beta-adrenergic and parasympathetic blockade of the heart as induced by the i.v . administration of propranolol 0.25 mg/kg b.wt . and atropine 0.04 mg/kg b.wt .
C0018794
blockade
C0004259
atropine