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J Appl Physiol 53: 1228-1233, 1982;
8750-7587/82 $5.00
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Journal of Applied Physiology, Vol 53, Issue 5 1228-1233, Copyright © 1982 by American Physiological Society

ARTICLES

Restoration of thermoregulatory response to body cooling by cooling hands and feet

R. N. Van Someren, S. R. Coleshaw, P. J. Mincer and W. R. Keatinge

Deep body temperature fell progressively by 0.5-1.4 degrees C during 3-h immersions in 29 degrees C water. Both in unacclimatized volunteers and, to a lesser degree, in divers in cold-water training, cooling the hands and feet for 1 h in 12 degrees C water during such immersion caused sensation of cold, shivering, and rise in metabolic rate; it caused body temperature to rise in unacclimatized subjects and halted its fall in divers. Tissue conductances generally fell a little in divers but rose in unacclimatized subjects, probably because of muscle blood flow associated with the greater shivering in the latter. Soaking the skin for 4 h produced no major changes in cutaneous thermal sensation assessed in the forearm, though with seawater it sometimes reduced cold sensation and with distilled water sometimes reduced warm sensation, a little. It is concluded that uniform skin temperature of 29 degrees C often induces insufficient heat-gain reflexes to maintain body temperature and that cooling of the extremities can restore adequate thermoregulatory response.


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D. Brajkovic, M. B. Ducharme, and J. Frim
Influence of localized auxiliary heating on hand comfort during cold exposure
J Appl Physiol, December 1, 1998; 85(6): 2054 - 2065.
[Abstract] [Full Text] [PDF]


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