Document Detail

Plasma testosterone during bicycle ergometer exercise without and after L-dopa pretreatment.
MedLine Citation:
PMID:  6978249     Owner:  NLM     Status:  MEDLINE    
The level of testosterone in plasma during submaximal, prolonged submaximal and maximal exercise on a bicycle ergometer was measured in healthy untrained men. To evaluate the possible involvement of prolactin in the regulation of testosterone secretion during exercise, the influence of prolactin inhibition by oral L-dopa (1 g) pretreatment was also studied. The exercise evoked a small but significant rise of testosterone concentration with peak levels immediately at the end of work performance or 10 min after that. No substantial difference between the response to submaximal and maximal exercise was noted. In these experiments the findings by others on a lack of plasma LH changes and significant increase of plasma prolactin were confirmed. Pharmacological blockade of prolactin release by L-dopa pretreatment failed to modify the response of testosterone to bicycle ergometer exercise. It may be suggested that prolactin is not involved in the induction of plasma testosterone increase during physical exercise.
D Jezová-Repceková; M Vigas; L Mikulaj; J Jurcovicová
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Endocrinologia experimentalis     Volume:  16     ISSN:  0013-7200     ISO Abbreviation:  Endocrinol. Exp.     Publication Date:  1982 Mar 
Date Detail:
Created Date:  1982-06-14     Completed Date:  1982-06-14     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0125712     Medline TA:  Endocrinol Exp     Country:  CZECHOSLOVAKIA    
Other Details:
Languages:  eng     Pagination:  3-8     Citation Subset:  IM    
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MeSH Terms
Levodopa / diagnostic use*
Luteinizing Hormone / blood
Physical Exertion*
Prolactin / blood
Testosterone / blood*
Reg. No./Substance:
0/Levodopa; 58-22-0/Testosterone; 9002-62-4/Prolactin; 9002-67-9/Luteinizing Hormone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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