Accession Number:

ADA148847

Title:

Food Deprivation and Exercise in the Heat: Thermoregulatory and Metabolic Effects,

Descriptive Note:

Corporate Author:

ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA

Personal Author(s):

Report Date:

1984-12-05

Pagination or Media Count:

25.0

Abstract:

To determine the effects of food deprivation on the physical, physiological, and metabolic responses to exercise in the heat, adult, male rats 330-360 g, N16group were food-deprived for 24, 48, or 72h. They were then exercised 9.14mmin in the heat 35.5 deg C to hyperthermic exhaustion Tco approx. 43 deg C. Food deprivation had no effects on endurance, but ad lib fed controls manifested significantly P or .05 increased Tco and Tsk during the latter portion of the treadmill interval. Prolonged food deprivation 48 and 772h resulted in significant P or .01 hypertriglyceridemia and hyperlactacidemia subsequent to exercise. Levels of sodium, potassium, urea nitrogen, and creatine phosphokinase were unaffected by the food deprivation intervals. We have concluded from these studies that while several thermoregulatory and metabolic responses to exercise in the heat can be significantly affected by food deprivation, short-term endurance capacity was unaltered.

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE