Document Detail


Maximal exercise capacity in adolescent European and Amerindian high-altitude natives.
MedLine Citation:
PMID:  4061578     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Forty-seven highland natives were given maximal exercise tests on a treadmill ergometer at 3,600 m. The subjects were grouped into four subsamples on the basis of ethnicity (European vs. Aymara) and age (young vs. old adolescent). Two-way ANOVA indicated that VO2max adjusted for body size did not differ significantly between ethnic groups but was significantly larger in older than younger boys within each ethnic group (p less than .05). This finding does not support the hypothesis that Amerindian highland natives have adapted genetically to hypoxia but is consistent with the hypothesis that the relatively high VO2max's of highlanders are acquired by developmental adaptation. Several measures of ventilation and oxygen transport capacity differed significantly between ethnic groups, suggesting that growing European and Aymara boys may respond somewhat differently to the stress of high-altitude hypoxia. However, despite these differences, VO2max, an integrated measure of the overall functional capacity of the oxygen transport system, did not differ significantly between ethnic groups, suggesting that both groups are equally capable of meeting the body's oxygen requirements during maximal exercise at high altitude.
Authors:
L P Greksa; H Spielvogel; L Paredes-Fernández
Related Documents :
11716128 - Association of splenomegaly with cerebral malaria and decreased concentrations of react...
8926248 - Augmented hypoxic cerebral vasodilation in men during 5 days at 3,810 m altitude.
6311778 - Effect of prolonged exercise at altitude on the renin-aldosterone system.
17368588 - Severe dyspnoea on light exercise at high altitude: unusual presentation of ebstein's a...
12581938 - Cognitive behavioral stress management effects on injury and illness among competitive ...
16477498 - The effects of exercise training on myocardial adrenergic and muscarinic receptors.
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of physical anthropology     Volume:  67     ISSN:  0002-9483     ISO Abbreviation:  Am. J. Phys. Anthropol.     Publication Date:  1985 Jul 
Date Detail:
Created Date:  1985-12-19     Completed Date:  1985-12-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0400654     Medline TA:  Am J Phys Anthropol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  209-16     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Altitude*
Bolivia
Child
Ethnic Groups*
Humans
Indians, South American*
Male
Maximal Voluntary Ventilation
Physical Exertion*
Pulmonary Ventilation*

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


Previous Document:  Immunoglobulin allotypes in Jewish populations living in Israel and the United States.
Next Document:  Genetic variation in North Amerindian populations: the geography of gene frequencies.