Document Detail


Effect of chronic hypoxia and socioeconomic status on anaerobic power of 10- to 12-year-old Bolivian boys.
MedLine Citation:
PMID:  8056466     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to analyze the effect of chronic high altitude hypoxia and socioeconomic status on the anaerobic power, developed during short-term maximal exercises, of prepubertal Bolivian boys. We studied 67 prepubertal boys (9-12.6 years) at high altitude in La Paz (3600 m, Bolivia); 23 were from a high socioeconomic background (HAHSES) and 44 from a low socioeconomic background (HALSES). The group studied at low altitude in Santa Cruz de la Sierra (420 m, Bolivia) consisted of 78 boys of the same age; 30 were from a high (LAHSES) and 48 from a low (LALSES) socioeconomic background. Maximal anaerobic power (Pmax) was determined by a force-velocity test and mean anaerobic power (P) was measured by a 30-s Wingate test. The tests were realized at high and low altitude on the same calibrated cycle ergometer. At both high and low altitudes, Pmax expressed in absolute terms or relative to body weight were significantly higher in boys of high socioeconomic status (HAHSES: 6.8 +/- 1.0; LAHSES: 7.1 +/- 1.0 W.kg-1 BW) than in boys of low socioeconomic status (HALSES: 5.5 +/- 0.8; LALSES: 5.3 +/- 0.9 W.kg-1 BW). However, there was no significant difference between highland and lowland boys of the same socioeconomic class. The same observations were obtained for P (HAHSES: 5.2 +/- 0.8; HALSES: 4.5 +/- 0.9; LAHSES: 5.2 +/- 0.7; LALSES: 4 +/- 0.6 W.kg-1 BW). To conclude, boys of the same socioeconomic class at high and low altitude had the same anaerobic power. However, regardless of altitude, low socioeconomic status led to lower power developed during short-term maximal exercises.
Authors:
M Bedu; G Falgairette; E Van Praagh; J Coudert
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of sports medicine     Volume:  15 Suppl 2     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  1994 Apr 
Date Detail:
Created Date:  1994-09-13     Completed Date:  1994-09-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  S84-9     Citation Subset:  IM    
Affiliation:
Laboratoire de Physiologie et Biologie du Sport, Faculté de Médecine, Clermont-Ferrand, France.
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MeSH Terms
Descriptor/Qualifier:
Altitude
Anaerobic Threshold / physiology*
Anoxia / physiopathology*
Child
Chronic Disease
Exercise Test
Humans
Male
Social Class*

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


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