to test the hypothesis that alterations in adrenergic or cholinergic receptors occur in response to physical training , and that changes in receptor properties could be mechanistically important in producting the altered cardiovascular physiology of the trained state , we studied the effects of endurance training by swimming upon beta adrenergic , alpha adrenergic , and muscarinic cholinergic receptors of rat heart .
C0034792
cholinergic receptors
C0034826
muscarinic cholinergic