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J Appl Physiol 42: 377-384, 1977;
8750-7587/77 $5.00
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Journal of Applied Physiology, Vol 42, Issue 3 377-384, Copyright © 1977 by American Physiological Society

ARTICLES

Thermoregulatory heat production in man: prediction equation based on skin and core temperatures

J. S. Hayward, J. D. Eckerson and M. L. Collis

The relationship of metabolic rate to skin and core temperatures was measured in eight subjects cooled in 10 degrees C water. Reference core temperatures, based on the tympanic and rectal sites, were 41.0 and 41.4 degrees C, respectively. Reference mean skin temperatures were 41.8 and 42.2 degrees C when determined in relation to tympanic and rectal temperatures, respectively. These results enabled construction of equations for predicting the steady-state metabolic rate (MR, W-kg-1) of nonexercising man according to thermal inputs from the skin (Tsk) and core (Tty or Tre) MR = 0.0356(Tsk - 41.8)(Tty - 41.0) or, MR = 0.0314(Tsk - 42.2)(Tre - 41.4). Each equation was limited by the low level of basal metabolic rate (1.1 W-kg-1) and by the high level of peak metabolic rate (6.4 W-kg-1). Evaluation of these equations showed satisfactory agreement with previous observations and concepts on the regulation of heat production in man.


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S. M. Frank, S. N. Raja, C. F. Bulcao, and D. S. Goldstein
Relative contribution of core and cutaneous temperatures to thermal comfort and autonomic responses in humans
J Appl Physiol, May 1, 1999; 86(5): 1588 - 1593.
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