The Influence of Arc-Flash and Fire-Resistant Clothing on Thermoregulation during Exercise in the Heat.
We evaluated the effect of arc-flash and fire-resistant (AFR) clothing ensembles (CE) on whole-body heat dissipation during work in the heat. On 10 occasions, 7 males performed four 15-min cycling bouts at a fixed rate of metabolic heat production (400 W) in the heat (35°C), each separated by 15-min...
| Publicado en: | Journal of Occupational & Environmental Hygiene Vol. 12; no. 9; pp. 654 - 668 |
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| Autores principales: | , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Sep2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109017159&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109017159 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Sep2015 vid: 12 iid: 9 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 109017159 109017159 109017159 10.1080/15459624.2015.1029615 109017159 ppf: 654 ppct: 14 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: The Influence of Arc-Flash and Fire-Resistant Clothing on Thermoregulation during Exercise in the Heat. aug: au: Poirier, Martin P. Meade, Robert D. McGinn, Ryan Friesen, Brian J. Hardcastle, Stephen G. Flouris, Andreas D. Kenny, Glen P. affil: Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada sug: subj: Exercise Physiology Firefighting Protective Clothing Body Temperature Regulation Human Male Cycling Calorimetry Heat Loss Male ab: We evaluated the effect of arc-flash and fire-resistant (AFR) clothing ensembles (CE) on whole-body heat dissipation during work in the heat. On 10 occasions, 7 males performed four 15-min cycling bouts at a fixed rate of metabolic heat production (400 W) in the heat (35°C), each separated by 15-min of recovery. Whole-body heat loss and metabolic heat production were measured by direct and indirect calorimetry, respectively. Body heat storage was calculated as the temporal summation of heat production and heat loss. Responses were compared in a semi-nude state and while wearing two CE styles: (1) single-piece (coveralls) and (2) two-piece (workpant + long-sleeve shirt). For group 1, there was one non-AFR single-piece CE (CE1STD) and three single-piece CE with AFR properties (CE2AFR, CE3AFR, CE4AFR). For group 2, there was one non-AFR two-piece CE (CE5STD) and four two-piece CE with AFR properties (CE6AFR, CE7AFR, CE8AFR, CE9AFR). The workpants for CE6AFRwere not AFR-rated, while a cotton undershirt was also worn for conditions CE8AFRand CE9AFRand for all single-piece CE. Heat storage for all conditions (CE1STD: 328 ± 55, CE2AFR: 335 ± 87, CE3AFR: 309 ± 95, CE4AFR: 403 ± 104, CE5STD: 253 ± 78, CE6AFR: 268 ± 89, CE7AFR: 302 ± 70, CE8AFR: 360 ± 36, CE9AFR: 381 ± 99 kJ) was greater than the semi-nude state (160 ± 124 kJ) (all p ≤ 0.05). No differences were measured between single-piece uniforms (p = 0.273). Among the two-piece uniforms, heat storage was greater for CE8AFRand CE9AFRrelative to CE5STDand CE6AFR(all p ≤ 0.05), but not CE7AFR(both p > 0.05). Differences between clothing styles were measured such that greater heat storage was observed in both CE1STDand CE2-4AFRrelative to CE5STD.Further, heat storage was greater in CE2AFRand CE4AFRrelative to CE6AFR, while it was greater in CE4AFRcompared to CE7AFR. Body heat storage during work in the heat was not influenced by the use of AFR fabrics in the single- or two-piece uniforms albeit less heat was stored in the two-piece uniforms when no undershirt was worn. However, heat storage was comparable between clothing styles when an undershirt was worn with the two-piece uniform. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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