Document Detail

Biochemical aspects of overtraining in endurance sports: a review.
MedLine Citation:
PMID:  12392446     Owner:  NLM     Status:  MEDLINE    
Top-level performances in endurance sports require several years of hard training loads. A major objective of this endurance training is to reach the most elevated metabolic adaptations the athlete will be able to support. As a consequence, overtraining is a recurrent problem that highly-trained athletes may experience during their career. Many studies have revealed that overtraining could be highlighted by various biochemical markers but a principal discrepancy in the diagnosis of overtraining stems from the fact that none of these markers may be considered as universal. In endurance sports, the metabolic aspects of training fatigue appear to be the most relevant parameters that may characterise overtraining when recovery is not sufficient, or when dietary habits do not allow an optimal replenishment of substrate stores. From the skeletal muscle functions to the overall energetic substrate availability during exercise, six metabolic schemes have been studied in relation to overtraining, each one related to a central parameter, i.e. carbohydrates, branched-chain amino acids, glutamine, polyunsaturated fatty acids, leptin, and proteins. We summarise the current knowledge on these metabolic hypotheses regarding the occurrence of overtraining in endurance sports.
Cyril Petibois; Georges Cazorla; Jacques-Rémi Poortmans; Gérard Déléris
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Sports medicine (Auckland, N.Z.)     Volume:  32     ISSN:  0112-1642     ISO Abbreviation:  Sports Med     Publication Date:  2002  
Date Detail:
Created Date:  2002-10-23     Completed Date:  2003-03-13     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  8412297     Medline TA:  Sports Med     Country:  New Zealand    
Other Details:
Languages:  eng     Pagination:  867-78     Citation Subset:  IM    
University Victor Segalen Bordeaux 2, Faculté des Sciences du Sport et de l'Education Physique, Pessac, Bordeaux, France.
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MeSH Terms
Amino Acids, Branched-Chain / metabolism
Carbohydrate Metabolism
Fatigue / metabolism*
Fatty Acids, Unsaturated / metabolism
Glutamine / metabolism
Leptin / metabolism
Muscle, Skeletal / metabolism
Physical Education and Training
Physical Endurance / physiology*
Proteins / metabolism
Sports / physiology*
Reg. No./Substance:
0/Amino Acids, Branched-Chain; 0/Fatty Acids, Unsaturated; 0/Leptin; 0/Proteins; 56-85-9/Glutamine

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

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