| Branched-chain amino acid supplementation during repeated prolonged skiing exercises at altitude. | |
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MedLine Citation:
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PMID: 8876349 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study was conducted to test the hypothesis that a branched-chain amino acid (BCAA) supplementation would minimize changes in body composition and alterations in plasma amino acid profile induced by prolonged exercises at altitude. Twenty-four highly trained subjects participated in six successive sessions of ski mountaineering (6-8 hr duration, altitude 2,500-4,100 m). Twelve subjects took a dietary supplement of BCAA (BCAA group) and 12 took a dietary supplement that was 98% carbohydrate (C group). Body weight decreased in C subjects (-2.1%, p < .01), while the body weight loss recorded in the BCAA group was not statistically significant (-1.2%, NS). Changes in body composition that resulted from repeated skiing exercise at altitude were not significantly minimized by BCAA administration. Peak power output recorded during an incremental bicycle exercise decreased in C subjects but did not change significantly in BCAA subjects. Results of this study demonstrate that neither changes in body composition related to the ski mountaineering program nor muscular performance during isometric contraction was significantly affected by BCAA administration. |
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Authors:
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A X Bigard; P Lavier; L Ullmann; H Legrand; P Douce; C Y Guezennec |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: International journal of sport nutrition Volume: 6 ISSN: 1050-1606 ISO Abbreviation: Int J Sport Nutr Publication Date: 1996 Sep |
Date Detail:
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Created Date: 1997-01-09 Completed Date: 1997-01-09 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9307702 Medline TA: Int J Sport Nutr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 295-306 Citation Subset: IM; S |
Affiliation:
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Départment de Physiologie Systémique, CERMA, Brétigny-sur-Orge, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Altitude* Amino Acids, Branched-Chain / administration & dosage*, blood Exercise / physiology Glutamine / blood Human Growth Hormone / blood Humans Hydrocortisone / blood Insulin / blood Male Oxygen Consumption Physical Endurance / physiology* Skiing / physiology* Tryptophan / blood |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids, Branched-Chain; 11061-68-0/Insulin; 12629-01-5/Human Growth Hormone; 50-23-7/Hydrocortisone; 56-85-9/Glutamine; 73-22-3/Tryptophan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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