Accession Number:

ADA160513

Title:

Prediction Modeling of Physiological Responses and Human Performance in the Heat,

Descriptive Note:

Corporate Author:

ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA

Report Date:

1985-09-01

Pagination or Media Count:

29.0

Abstract:

Over the last two decades, the Military Ergonomics Division of the US Army Research Institute of Environmental Medicine has been establishing the data base and developing a series of predictive equations for deep body temperature, heart rate and sweat loss responses of clothed soldiers performing physical work at various environmental extremes. This document describes the attempt to program these predictive equations on various desk top and hand held calculators with the express purpose of developing a comprehensive heat stress model for predicting soldier performance to work, clothing and the environment. This model deals with the interaction of various multi-disciplinary factors such as 1 the theoretical physics of heat transfer, 2 the biophysics of clothing, 3 the physiology of metabolic heat production, distribution and elimination, and 4 related meteorological considerations. The primary physiological inputs are deep body rectal temperature and sweat loss while the predicted outputs are the expected physical work-rest cycle, the maximum single physical work time if appropriate, and the associated water requirements. This document presents the mathematical basis employed in the development of the various individual predictive equations of our heat stress model. In addition, our current heat stress prediction model as programmed on the HP 41 CV is discussed from the standpoint of proprietary in meeting the Armys needs and therefore assisting in military mission accomplishment.

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE