Journal of Applied Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 39: 457-461, 1975;
8750-7587/75 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Haymes, E. M.
Right arrow Articles by Buskirk, E. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Haymes, E. M.
Right arrow Articles by Buskirk, E. R.

Journal of Applied Physiology, Vol 39, Issue 3 457-461, Copyright © 1975 by American Physiological Society

ARTICLES

Heat tolerance of exercising lean and obese prepubertal boys

E. M. Haymes, R. J. McCormick and E. R. Buskirk

Seven lean and five obese boys, aged 9-12 yr, exercised in four environments: 21.1, 26.7, 29.4, and 32.2 degrees C Teff. Subjects walked on a treadmill at 4.8 km/h, 5% grade for three 20-min exercise bouts separated by 5-min rest periods. Rectal temperature (Tre), skin temperature (Tsk), heart rate (HR), sweat rate, and oxygen uptake (VO2) were measured periodically throughout the session. Lean boys had lower Tre and HR than obese boys in each of the environments. Increases in Tre were significantly greater for the obese at 26.7 and 29.4 degrees C Teff. No significant differences in Tsk and sweat rate (g-m-2-h-1) were observed between lean and obese boys. Obese boys had significantly lower oxygen consumptions per kg but worked at a significantly higher percentage of VO2max than lean boys when performing submaximal work. Responses of the obese boys to exercise in the heat were similar to those of heavy prepubertal girls studied previously, except that the boys were more tolerant of exercise at 32.2 degrees C Teff than the girls. Lean boys had lower HR than lean girls in each environment, but lower Tre only at 32.2 degrees C Teff.


This article has been cited by other articles:


Home page
 PediatricsHome page
Committee on Sports Medicine and Fitness
Promotion of Healthy Weight-Control Practices in Young Athletes
Pediatrics, December 1, 2005; 116(6): 1557 - 1564.
[Abstract] [Full Text] [PDF]

Home page
 Exp PhysiolHome page
O. Inbar, N. Morris, Y. Epstein, and G. Gass
Comparison of thermoregulatory responses to exercise in dry heat among prepubertal boys, young adults and older males
Exp Physiol, November 1, 2004; 89(6): 691 - 700.
[Abstract] [Full Text] [PDF]

Home page
 PediatricsHome page
Committee on Sports Medicine and Fitness
Climatic Heat Stress and the Exercising Child and Adolescent
Pediatrics, July 1, 2000; 106(1): 158 - 159.
[Abstract] [Full Text]

Home page
 NEJMHome page
J. C. Semenza, C. H. Rubin, K. H. Falter, J. D. Selanikio, W. D. Flanders, H. L. Howe, and J. L. Wilhelm
Heat-Related Deaths during the July 1995 Heat Wave in Chicago
N. Engl. J. Med., July 11, 1996; 335(2): 84 - 90.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online