Document Detail


Ambient air, oxygen and nitrox effects on cognitive performance at altitude.
MedLine Citation:
PMID:  10584397     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effects on cognitive performance of breathing air, oxygen and nitrox gas mixtures at surface ambient pressures were investigated during an expedition to the Everest region of Nepal. A slight improvement in grammatical reasoning at altitude was found under nitrox (p < 0.05) and mathematical reasoning showed improvement at altitude on air (p < 0.05), oxygen (p < 0.01) and nitrox (p < 0.01). There were non-significant trends towards decreasing mathematical ability, coupled with an increase in variance on both grammatical and mathematical test performance, with increasing pO2 (all p > 0.05). The results suggest that there is a subtle interaction on cognition as indicated by a significant three-way interaction between subject x altitude x gas (p < 0.05).
Authors:
J Leach; S Almond
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Applied human science : journal of physiological anthropology     Volume:  18     ISSN:  1341-3473     ISO Abbreviation:  Appl Human Sci     Publication Date:  1999 Sep 
Date Detail:
Created Date:  2000-04-11     Completed Date:  2000-04-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9506216     Medline TA:  Appl Human Sci     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  175-9     Citation Subset:  IM; S    
Affiliation:
Department of Psychology, Faculty of Applied Sciences, University of Lancaster. j.leach@lancaster.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Adult
Altitude*
Analysis of Variance
Cognition / drug effects*
Humans
Male
Nepal
Nitrogen / pharmacology*
Oxygen / pharmacology*
Radiation-Protective Agents / pharmacology*
Chemical
Reg. No./Substance:
0/Radiation-Protective Agents; 37291-87-5/nitrox; 7727-37-9/Nitrogen; 7782-44-7/Oxygen

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


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