Effect of base layer materials on physiological and perceptual responses to exercise in personal protective equipment

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• 作者：Denise L. Smith ; Logan Arena ; Jacob P. DeBlois ; Jeannie M. Haller ; Eric M. Hultquist ; Wesley K. Lefferts ; Tim Russell ; Annie Wu ; Patricia C. Fehling
• 关键词：Heat stress ; Firefighting ; Clothing
• 刊名：Applied Ergonomics
• 出版年：May, 2014
• 年：2014
• 卷：45
• 期：3
• 页码：428-436
• 全文大小：1382 K

文摘

Ten men (non-firefighters) completed a 110聽min walking/recovery protocol (three 20-min exercise bouts, with recovery periods of 10, 20, and 20聽min following successive bouts) in a thermoneutral laboratory while wearing firefighting personal protective equipment over one of four base layers: cotton, modacrylic, wool, and phase change material. There were no significant differences in changes in heart rate, core temperature, rating of perceived exertion, thermal discomfort, and thermal strain among base layers. Sticking to skin, coolness/hotness, and clothing humidity sensation were more favorable (p聽<聽0.05) for wool compared with cotton; no significant differences were identified for the other 7 clothing sensations assessed. Separate materials performance testing of the individual base layers and firefighting ensembles (base layer聽+聽turnout gear) indicated differences in thermal protective performance and total heat loss among the base layers and among ensembles; however, differences in heat dissipation did not correspond with physiological responses during exercise or recovery.