Control of Thermoregulatory Sweating during Exercise in the Heat

Abstract

The purposes of this study were the following: to determine whether erythrocyte infusion alters the control of thermoregulatory sweating and to demonstrate how increases and decreases of both plasma toxicity and blood volume influence the thermoregulatory control parameters of threshold temperature and sweating sensitivity. Six non-heat-acclimated and five heat-acclimated males attempted heat stress tests (HSTs) both before and shortly after (48-96 h) autologous erythrocyte infusion. The non-heat acclimated subjects were euhydrated for both HSTs, whereas the heat-acclimated subjects were studied in a euhydrated and a hypohydrated (-5% body wt) condition both pre- and postinfusion (500 millimeters of solution containing approx. 60% hematocrit of autologous erythrocytes). Keywords: Reprints, Anatomy, Body fluids, Exercise (physiology), Heat production (biology), Thermoregulation, erythrocyte.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1989
Accession Number
ADA219084

Entities

People

  • Andrew J Young
  • C. R. Valeri
  • Michael N. Sawka
  • Richard C. Dennis
  • Richard R. Gonzalez

Organizations

  • United States Army Research Institute of Environmental Medicine

Tags

DTIC Thesaurus Topics

  • Blood
  • Blood Volume
  • Body Fluids
  • Body Temperature
  • Body Water
  • Body Weight
  • Cardiovascular System
  • Cellular Structures
  • Central Nervous System
  • Control Systems
  • Environment
  • Hydration
  • Military Research
  • Physiology
  • Statistical Analysis
  • Stress Tests
  • Sweating

Fields of Study

  • Biology

Readers

  • Exercise and Sports Science.
  • Trauma Surgery or Emergency Medicine.