Document Detail


Altitude acclimatization, training and performance.
MedLine Citation:
PMID:  11101269     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Exposure to altitude results in a reduction in partial pressure of oxygen in the arterial blood and a reduction in oxygen content. In an attempt to maintain aerobic metabolism during increased effort, a series of acclimatization responses occur. Among the most conspicuous of these responses is an increase in hemoglobin (Hb) concentration. The increase in Hb has been construed as the fundamental adaptation enabling increases in aerobic power and performance to occur on return to sea-level. However, the use of altitude to boost training adaptations and improve elite sea-level performance, although tantalizing, is largely unproven. The reasons appear to be many, ranging from the poor experimental designs employed, to the numerous strategies designed to manipulate the altitude experience and the large inter-individual differences in response patterns. However, other factors may also be important. Acclimatization has also been shown to induce alteration in selected properties of the muscle cell, some of which may be counterproductive. The processes involved in cation cycling, as an example, appear to be down-regulated. Changes in these processes could impair certain types of performance.
Authors:
H J Green
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  3     ISSN:  1440-2440     ISO Abbreviation:  J Sci Med Sport     Publication Date:  2000 Sep 
Date Detail:
Created Date:  2001-03-15     Completed Date:  2001-05-31     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  AUSTRALIA    
Other Details:
Languages:  eng     Pagination:  299-312     Citation Subset:  IM    
Affiliation:
Department of Kinesiology, University of Waterloo, Ontario.
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MeSH Terms
Descriptor/Qualifier:
Acclimatization / physiology*
Altitude*
Humans
Physical Education and Training*

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


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