Sleep Deprivation Depresses Thermoregulatory Responses to Physical Exercise,

Abstract

Thermoregulatory responses were examined in five male subjects during cycle ergometer exercise (50% of maximal aerobic power) in a temperature (Ta=28 deg C, rh=30%) environment. These exercise tests were conducted following normal sleep (control) and after 33 h of wakefulness. In comparison to control levels, sleep deprivation resulted in a greater increase (26%) in esophageal temperature from rest to final exercise values; sleep deprivation also resulted in reduced total body (27%) and local (19%) sweating rates as well as lowered sweating rate sensitivity (38%). An asynchronous rather than synchronous sweating rate pattern was frequently observed during the sleep deprivation test. Following sleep deprivation the threshold (0.11 deg C) and sensitivity (42%) for chest heat conductance were decreased. We conclude that sleep deprivation depressed thermoregulatory responses to physical exercise and that these responses may be mediated by the central nervous system. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 13, 1982
Accession Number
ADA125062

Entities

People

  • Michael N. Sawka
  • Richard R. Gonzalez

Organizations

  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Blood Flow
  • Body Weight
  • Central Nervous System
  • Deprivation
  • Dew Point
  • Environment
  • Heat Loss
  • Heat Transmission
  • Hypothalamus
  • Military Research
  • Nervous System
  • Security
  • Sensitivity
  • Sleep Deprivation
  • Sweat Glands
  • Sweating

Fields of Study

  • Psychology

Readers

  • Circadian Sleep-Wake Regulation and Chronobiology
  • Exercise and Sports Science.