Evaluating the 35°C wet-bulb temperature adaptability threshold for young, healthy subjects (PSU HEAT Project)

Author:

Vecellio Daniel J.1ORCID,Wolf S. Tony2ORCID,Cottle Rachel M.2ORCID,Kenney W. Larry123

Affiliation:

1. Center for Healthy Aging, Pennsylvania State University, University Park, Pennsylvania

2. Department of Kinesiology, Pennsylvania State University, University Park, Pennsylvania

3. Graduate Program in Physiology, Pennsylvania State University, University Park, Pennsylvania

Abstract

This study is the first to use empirical physiological observations to examine the well-publicized theoretical 35°C wet-bulb temperature limit for human to extreme environments. We find that uncompensable heat stress in humid environments occurs in young, healthy adults at wet-bulb temperatures significantly lower than 35°C. In addition, uncompensable heat stress occurs at widely different wet-bulb temperatures as a function of ambient vapor pressure.

Funder

HHS | NIH | National Institute on Aging

Publisher

American Physiological Society

Subject

Physiology (medical),Physiology

Reference28 articles.

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