Document Detail


Cardiorespiratory response to exercise in elite Sherpa climbers transferred to sea level.
MedLine Citation:
PMID:  9243493     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Himalayan Sherpas are well known for their extraordinary adaptation to high altitude and some of them for their outstanding physical performance during ascents to the highest summits. To cast light on this subject, we evaluated the cardiorespiratory response during exercise at sea level of six of the most acknowledged Sherpa climbers, mean age (+/- SD) 37 (+/- 7) yr old. Continuous electrocardiogram and breath-by-breath pulmonary gas exchange until exhaustion were obtained by following the Bruce protocol. We detected a maximal oxygen uptake (VO2max) of 66.7 (+/- 3.7) mL-min-1.kg-1, maximal cardiac frequency of 199 (+/- 7) beats.min-1, and ventilatory anaerobic threshold at 62 (+/- 4) % of VO2max. These factors could help to explain the greater performance level shown by several elite climbers of this ethnic group. The high functional reserve demonstrated by this very select group of highlanders could be associated with natural selection and with special physiological adaptations probably induced by long-training in a hostile environment.
Authors:
E Garrido; G Rodas; C Javierre; R Segura; A Estruch; J L Ventura
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  29     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  1997 Jul 
Date Detail:
Created Date:  1997-09-23     Completed Date:  1997-09-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  937-42     Citation Subset:  IM; S    
Affiliation:
CEARE, Center of High Performance and Exercise Physiology, Medical School, University of Barcelona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Adult
Altitude*
Anaerobic Threshold
Anoxia
Blood Gas Analysis
Ethnic Groups
Exercise / physiology*
Heart Rate
Humans
Male
Mountaineering / physiology*
Oxygen Consumption
Physical Endurance / physiology*

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


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