Document Detail

Restoration of anabolic deficit and muscle glycogen consumption in competitive orienteering.
MedLine Citation:
PMID:  2373578     Owner:  NLM     Status:  MEDLINE    
Consumption and restoration of muscle glycogen and changes in anabolic and catabolic steroid hormones were analyzed in five male elite orienteers during and after an orienteering competition. The magnitude of glycogen consumption and pronounced increase in serum-cortisol during the orienteering race reflect the great muscular output demands during forest running. The free testosterone/cortisol ratio was normalized to the initial level within four hours post-exercise. Synchronously, only 25% of the muscle glycogen loss was restored. Within 24 hours post-exercise all runners showed normalized levels of testosterone, cortisol and free testosterone/cortisol ratio. The glycogen content was also restored except in one of the runners. We conclude that daily orienteering competitions per se do not seem to create risks for developing a state of hormonal imbalance or significant decrease in glycogen when the carbohydrate supply is appropriate.
C Johansson; L Tsai; E Hultman; R Tegelman; A Pousette
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of sports medicine     Volume:  11     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  1990 Jun 
Date Detail:
Created Date:  1990-08-28     Completed Date:  1990-08-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  204-7     Citation Subset:  IM; S    
Department of Orthopaedic Surgery, Karolinska Institutet, Huddinge University Hospital, Sweden.
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MeSH Terms
Glycogen / metabolism*
Hydrocortisone / blood*,  metabolism
Muscle Contraction
Muscles / metabolism*
Physical Exertion / physiology*
Testosterone / blood*,  metabolism
Time Factors
Reg. No./Substance:
50-23-7/Hydrocortisone; 58-22-0/Testosterone; 9005-79-2/Glycogen

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

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