Probability of Heat Intolerance: Standardized Interpretation of Heat-Tolerance Testing Results Versus Specialist Judgment

Journal of Athletic Training
Haggai SchermannRan Yanovich

Abstract

The heat-tolerance test (HTT) is a screening tool for secondary prevention of exertional heat illness by the Israel Defense Forces. To discern participant tolerance, recruits are exposed to intermediate environmental and exercise stresses, and their physiological responses, core temperature, and heart rate are monitored. When their physiological measures rise at a higher rate or exceed the upper levels of absolute values compared with other participants, heat intolerance (HI) is diagnosed. To develop a mathematical model to interpret HTT results and provide a quantitative estimate of the probability of heat tolerance (PHT). Cross-sectional study. Warrior Health Research Institute. The HTT results of 175 random individuals tested after an episode of exertional heat illness were classified qualitatively and then divided into training (n = 112) and testing (n = 63) datasets. All individuals were male soldiers (age range = 18-22 years) who had sustained an episode of definitive or suspected exertional heat stroke. Based on the decision algorithm used by the Israel Defense Forces for manual interpretation of the HTT, we designed a logistic regression model to predict the heat-tolerance state. The model used a time series of physiolo...Continue Reading

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Citations

Jun 20, 2019·The New England Journal of Medicine·Yoram Epstein, Ran Yanovich
Jun 7, 2019·Research Quarterly for Exercise and Sport·Ran YanovichYuval Heled
Sep 24, 2019·Journal of Applied Physiology·Orlando LaitanoMichael N Sawka
Jan 28, 2020·Journal of Athletic Training·Haggai SchermannRan Yanovich
Jul 10, 2019·Temperature : Multidisciplinary Biomedical Journal·Katherine M MitchellRobert W Kenefick
Jan 22, 2021·Military Medical Research·De-Meng XiaShuo-Gui Xu
Oct 17, 2020·Medicine and Science in Sports and Exercise·Katherine M MitchellSamuel N Cheuvront
Dec 27, 2018·Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine·Nathan SchiffmannRan Yanovich

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