Document Detail

Capacity of young males and females for running in desert heat.
MedLine Citation:
PMID:  593074     Owner:  NLM     Status:  MEDLINE    
Tolerance for sustained activity in the desert at about 40 degrees C was assessed on high school students, mostly athletically oriented and scholastically superior. The 14 males compared with the 12 females had an aerobic capacity greater by about one-half and a percentage of body fat smaller by about one-half. Each sex attained about the same percentage of aerobic capacity in their maximal sustained effort. This involved an increase in metabolic rate of 3 to 5 fold in females and 6 to 8 fold in males. In maximal sustained effort responses of males and females were alike in respect to rectal and skin temperatures and heart rate. At a rate at which nearly all walked for one hour, 100 m/min, there were no significant differences in metabolic rate, sweat rate nor in composition of sweat. Running at 120 m/min required maximal effort by most females; their maximal sweat rates ranged from 7.4 to 14.2 ml/m2.min. Most males were able to run at 160 m/min for one-half hor to one hour; their maximal sweat rates ranged from 11.3 to 14.6 m/m2.min. Superior capacity of males over females for sustained exercise in desert heat is related to their higher aerobic capacity and not to a difference in capacity for thermoregulation.
D B Dill; L F Soholt; D C McLean; T F Drost; M T Loughran
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Medicine and science in sports     Volume:  9     ISSN:  0025-7990     ISO Abbreviation:  Med Sci Sports     Publication Date:  1977  
Date Detail:
Created Date:  1978-02-18     Completed Date:  1978-02-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0203246     Medline TA:  Med Sci Sports     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  137-42     Citation Subset:  IM    
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MeSH Terms
Blood Pressure
Desert Climate*
Hot Temperature*
Oxygen Consumption
Skin Temperature
Sports Medicine*
Sweat / analysis

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

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