Journal of Applied Physiology Watch the video to learn how APS reaches out to developing nations.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 50: 406-411, 1981;
8750-7587/81 $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 Inbar, O.
Right arrow Articles by Gutin, B.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Inbar, O.
Right arrow Articles by Gutin, B.

Journal of Applied Physiology, Vol 50, Issue 2 406-411, Copyright © 1981 by American Physiological Society

ARTICLES

Conditioning versus exercise in heat as methods for acclimatizing 8- to 10-yr-old boys to dry heat

O. Inbar, O. Bar-Or, R. Dotan and B. Gutin

Two heat-acclimatization protocols were studied in 8- to 10-yr-old boys: exercise in dry heat (WH, n = 9) and exercise in neutral climate (W, n = 9). Five 90-min acclimatization sessions were conducted within a 12-day period. Base-line (BL) and criterion (CT) tests sessions were held at 43 degrees C db and 24 degrees C wb, with three 20-min exercise bouts at approximately 40 Ws. With acclimatization, the WH group showed a significant reduction in heart rate (HR) (11.4 beat x min-1), mean skin temperature (0.64 degrees C), and an increase in the population density of heat-activated sweat glands (HASG) (25.2 glands x cm-2). The W group showed a significant reduction in HR (13.4 beat x min-1) and rectal temperature (0.24 C). Total sweat rate per body surface area did not increase significantly in either group. However, the sweat rate relative to rise in core temperature increased in both groups. No significant differences were found between the two acclimatization procedures in any of the variables studies except for the HASG, which showed a greater increase in the WH group. It is suggested that in 8- to 10-yr-old boys physiological changes compatible with heat acclimatization could be achieved either by exercise in heat or by mere physical conditioning (approximately 65% of VO2max), in neutral climate. It is postulated that age-related factors associated with the thermoregulatory system prevent children from deriving full effectiveness of exercise-in-heat acclimatization protocol as used in this study.


This article has been cited by other articles:


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
 J. Appl. Physiol.Home page
A. M. Rivera-Brown, R. Gutierrez, J. C. Gutierrez, W. R. Frontera, and O. Bar-Or
Drink composition, voluntary drinking, and fluid balance in exercising, trained, heat-acclimatized boys
J Appl Physiol, January 1, 1999; 86(1): 78 - 84.
[Abstract] [Full Text] [PDF]


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