Accession Number : AD0617811

Title :   A SEX DIFFERENCE IN THE TEMPERATURE RESPONSE OF RATS TO EXERCISE,

Corporate Author : UNIVERSITY OF WESTERN ONTARIO LONDON DEPT OF PHYSIOLOGY

Personal Author(s) : Thompson,G. E. ; Stevenson,J. A. F.

Report Date : 26 NOV 1964

Pagination or Media Count : 7

Abstract : The changes of colonic and tail skin temperatures were measured in male and female rats exercised on a motor-driven treadmill at a speed of 4.6m/minute. The pattern of changes in these temperatures was the same in the two sexes except that the females tolerated a significantly higher colonic temperature than the males before beginning to vasodilate in the tail, and, perhaps as a result, the females regulated core temperature at a significantly higher level as exercise continued. Ovariectomy or prolonged (7-14 days) treatment with progesterone (12 mg/day) resulted in the temperature response to exercise of the female approaching that of the male, but not entirely eliminating the difference. (Author)

Descriptors :   (*EXERCISE(PHYSIOLOGY), BODY TEMPERATURE), (*HEAT TOLERANCE, EXERCISE(PHYSIOLOGY)), (*BODY TEMPERATURE, RATS), SEX, SEX GLANDS, OVARIES, PROGESTERONE, TESTOSTERONE, EXCISION, TOLERANCES(PHYSIOLOGY), BLOOD VESSELS, MALES, FEMALES

Distribution Statement : APPROVED FOR PUBLIC RELEASE