Document Detail


Aerobic power as a factor in women's response to work in hot environments.
MedLine Citation:
PMID:  1002636     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Twelve young women, athletes (n = 6) and nonathletes (n = 6), walked on a treadmill at loads equivalent to approximately 30% Vo2 max for two 50-min periods in three environments: 1) 28 degrees C, 45% rh, 2) 35 degrees C, 65% rh, and 3) 48 degrees C, 10% rh. There were no differences between groups in rectal temperature, heart rate, evaporative heat loss, or mean skin temperature at 28 or 35 degrees C or during the first work period in the 48 degrees C environment. However, a significantly lower cardiac output (Q) and stroke volume (SV) observed for nonathletes by the 46th min of work at 48 degrees C may explain why no nonathletes were able to complete a 2nd h of work while four of six athletes successfully finished the period. It appears that in conditions of severe heat stress (48 degrees C) athletes were able to maintain a cardiac output sufficient to meet the metabolic requirements and the large increase in peripheral blood flow for a longer period of time than nonathletes.
Authors:
B L Drinkwater; J E Denton; I C Kupprat; T S Talag; S M Horvath
Related Documents :
12684806 - Responses to exercise in the heat related to measures of hypothalamic serotonergic and ...
18511316 - Short-term thermoregulatory adjustments in a south american anseriform, the black-necke...
18846326 - Influence of exercise at high temperature on blood biochemical indexes and hsp72 expres...
20845216 - Effects of different cooling treatments on water diffusion, microcirculation, and water...
1960796 - Evaluation of a specific test in cross-country skiing.
4076366 - Comparison of two calcium antagonists, verapamil and gallopamil (d-600), in exercise-in...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of applied physiology     Volume:  41     ISSN:  0021-8987     ISO Abbreviation:  J Appl Physiol     Publication Date:  1976 Dec 
Date Detail:
Created Date:  1977-02-16     Completed Date:  1977-02-16     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0376576     Medline TA:  J Appl Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  815-21     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Acclimatization
Adult
Blood Pressure
Body Temperature
Body Temperature Regulation*
Cardiac Output
Electrolytes / blood
Environment
Female
Forearm / blood supply
Heart Rate
Hot Temperature*
Humans
Oxygen Consumption*
Physical Exertion*
Plasma Volume
Regional Blood Flow
Sex Factors
Chemical
Reg. No./Substance:
0/Electrolytes

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


Previous Document:  The changing criterion design.
Next Document:  Cardiorespiratory responses of sedentary college women as a function of training intensity.