in 10 healthy volunteers the effects of acute increases in concentrations of catecholamines in plasma induced by dynamic exercise ( on a bicycle for 15 min at 80 % of maximum heart rate ) on lymphocyte beta 2-adrenoceptor density ( determined by ( +/- ) -125iodocyanopindolol binding ) and -responsiveness ( determined by cyclic amp responses to 10 mumol/l isoprenaline ) were investigated .
C0007412
catecholamines
C0022245
isoprenaline