PHYSIOLOGICAL RESPONSES OF MEN TO WET TROPICAL ENVIRONMENTAL CONDITIONS (OPERATION SWAMP FOX II)

Abstract

Army personnel under heat stress were observed while walking up and down a 12.5 degree slope and while confined (as a squad) for up to six hours in an armored personnel carrier at an unforested tropical site. Measurements of bodily temperatures, pulse rates, and sweat production were used as indices of heat strain in the men. Subjects walking in the sun, unloaded, did not suffer excessive heat strain under midday tropical conditions. About two-thirds of the sweat produced was evaporated for body cooling. Data on confined men showed there was little risk they would become heat casualties when exposed to effective temperatures up to 33.3 deg C. (92.0 deg F.) for as long as four hours. The men showed physiological adjustments to changes in environmental stress in less than 10 minutes.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1964
Accession Number
AD0602661

Entities

People

  • Arthur Jr A. Woodward

Organizations

  • United States Army Materiel Command

Tags

Communities of Interest

  • Biomedical
  • Human Systems

DTIC Thesaurus Topics

  • Armored Personnel Carriers
  • Army Personnel
  • Biological Sciences
  • Body Temperature
  • Body Weight
  • Employment
  • Engineering
  • Environment
  • Heart Rate
  • Measurement
  • Military Personnel
  • Military Vehicles
  • Personnel Management
  • Physiology
  • Regions
  • Solar Radiation
  • Vehicles

Fields of Study

  • Environmental science

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Psychological Intervention/Treatment for Stress, Anxiety, PTSD, and Related Emotional and Cognitive Health Symptoms.
  • Thermal Physics or Thermal Science.