Document Detail

Sperm counts and reproductive hormones in male marathoners and lean controls.
MedLine Citation:
PMID:  2108059     Owner:  NLM     Status:  MEDLINE    
In women, chronic and intense endurance exercise is frequently associated with menstrual cycle alterations. In men, the effects of similar amounts of exercise are less well-studied. We tested the hypothesis that endurance exercise in men is also associated with alterations in reproductive function. We studied 12 marathon runners and 12 age-matched, lean controls; serum and semen samples were collected every 2 weeks for 12 weeks. Sperm counts, sperm morphologies, and mean levels of testosterone (T), free T, sex hormone binding globulin, cortisol, follicle-stimulating hormone, and biologically active luteinizing hormone (LH) were similar in the two groups. Mean levels of immunologically active LH were somewhat higher in the marathoners. We conclude that this level of strenuous, long-term endurance exercise does not have major adverse effects on reproductive function in men.
C J Bagatell; W J Bremner
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Fertility and sterility     Volume:  53     ISSN:  0015-0282     ISO Abbreviation:  Fertil. Steril.     Publication Date:  1990 Apr 
Date Detail:
Created Date:  1990-05-01     Completed Date:  1990-05-01     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0372772     Medline TA:  Fertil Steril     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  688-92     Citation Subset:  IM    
Department of Medicine and Population Center for Research in Reproduction, University of Washington, Seattle.
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MeSH Terms
Biological Assay
Body Composition*
Body Weight
Estradiol / blood*
Follicle Stimulating Hormone / blood*
Hydrocortisone / analysis
Luteinizing Hormone / blood*
Reference Values
Semen / analysis
Sex Hormone-Binding Globulin / analysis*
Sperm Count*
Sperm Motility
Testosterone / blood*
Grant Support
Reg. No./Substance:
0/Sex Hormone-Binding Globulin; 50-23-7/Hydrocortisone; 50-28-2/Estradiol; 58-22-0/Testosterone; 9002-67-9/Luteinizing Hormone; 9002-68-0/Follicle Stimulating Hormone

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

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