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Updated: Aug 20, 2026

A Preclinical Model of Exertional Heat Stroke in Mice
Published on: July 1, 2021
Age-related thermal strain in men while wearing radiation protective clothing during short-term exercise in the heat
Anna Marszałek1, Juhani Smolander, Krzysztof Soĺtyński
1Central Institute for Labour Protection, National Research Institute, Warsaw, Poland. anmar@ciop.pl
Abstract:
The aim of the study was to compare heat strain among different age groups of men in protective clothing during short-term physical work. Eight young (20-29 years), 6 middle-aged (41-55 years), and 6 older (58-65 years) men exercised for 30 min on a cycle ergometer (40% V(O2 max)) in 2 hot environments with a similar WBGT (ca. 26 degrees C): once with minimal clothing without infrared radiation (E1), and once with aluminized protective clothing under infrared radiation (E2). All subjects had sedentary jobs, but only the older subjects were physically active in their leisure-time. Body temperatures, heart rate, sweat rate, and subjective feelings were determined during the tests. Higher thermal strain was observed in E2 than in E1. No age-related differences in thermal strain were observed in either experiment indicating that active older men can tolerate short work periods with protective clothing in the heat as well as younger sedentary men.
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Biological Effects of Radiation
