Document Detail


Maximum exercise responses of men and women mountaineering trainees on induction to high altitude (4350 m) by trekking.
MedLine Citation:
PMID:  18715126     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: Maximum aerobic capacity decreases at high altitude. This study was conducted to compare the changes in maximum aerobic capacity in men and women mountaineering trainees on induction to high altitude at 4350 m by trekking. METHODS: Eight men and 8 women mountaineering trainees in a mountaineering course were selected for the study. The initial study was conducted at 2100 m (586 mm Hg) and then during 6 to 7 days of sojourn at 4350 m (435 mm Hg). Maximum oxygen consumption (VO(2max)), maximum heart rate (HR(max)), pulse arterial oxygen saturation (SaO(2)), and maximum ventilation (VE(max)) were measured. RESULTS: VO(2max), HR(max), duration of work (minutes), and SaO(2) saturation decreased significantly (P < .05) with increasing altitude in both sexes. Conversely, VE(max) and ventilatory equivalent (VE/VO(2)) increased significantly (P < .05). Men showed a relatively higher value of maximum exercise variables (total exercise time, exercise intensity, and VO(2)) than women trainees at both altitude locations. The decrement of VO(2max) was 13% in women and 17% in men (P < .05). CONCLUSIONS: The results indicate that the decrement of maximum aerobic capacity at 4350 m was less in women than in men under similar modes of ascent.
Authors:
Gopinath Bhaumik; Deepak Dass; Himmat Lama; S K S Chauhan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Wilderness & environmental medicine     Volume:  19     ISSN:  1080-6032     ISO Abbreviation:  Wilderness Environ Med     Publication Date:  2008  
Date Detail:
Created Date:  2008-08-21     Completed Date:  2008-12-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9505185     Medline TA:  Wilderness Environ Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  151-6     Citation Subset:  IM    
Affiliation:
Environmental Physiology Division, Defence Institute of Physiology, Allied Science Defence Research and Development Organization, Timarpur, Delhi, India. g_bhaumik1@yahoo.co.in
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MeSH Terms
Descriptor/Qualifier:
Altitude
Exercise / physiology*
Female
Heart Rate / physiology*
Humans
Male
Mountaineering* / physiology
Oxygen Consumption / physiology*
Pulmonary Ventilation / physiology*
Sex Factors
Young Adult

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


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