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dc.contributor.authorMaley, MJ
dc.contributor.authorCostello, JT
dc.contributor.authorBorg, DN
dc.contributor.authorBach, AJE
dc.contributor.authorHunt, AP
dc.contributor.authorStewart, IB
dc.date.accessioned2020-03-19T15:56:33Z
dc.date.available2020-03-19T15:56:33Z
dc.date.issued2017-11-09
dc.identifier.citationMaley, M.J., Costello, J.T., Borg, D.N., Bach, A.J.E., Hunt, A.P. and Stewart, I.B. (2017) An overt chemical protective garment reduces thermal strain compared with a covert garment in warm-wet but not hot-dry environments Frontiers in Physiology, 8:913. doi: 10.3389/fphys.2017.00913en
dc.identifier.issn1664-042Xen
dc.identifier.pmid29170644
dc.identifier.doi10.3389/fphys.2017.00913en
dc.identifier.urihttp://hdl.handle.net/2436/623153
dc.description© 2017 The Authors. Published by Frontiers Media. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.3389/fphys.2017.00913en
dc.description.abstract© 2017 Maley, Costello, Borg, Bach, Hunt and Stewart. Objectives: A commercial chemical, biological, radiological and nuclear (CBRN) protective covert garment has recently been developed with the aim of reducing thermal strain. A covert CBRN protective layer can be worn under other clothing, with equipment added for full chemical protection when needed. However, it is unknown whether the covert garment offers any alleviation to thermal strain during work compared with a traditional overt ensemble. Therefore, the aim of this study was to compare thermal strain and work tolerance times during work in an overt and covert ensemble offering the same level of CBRN protection. Methods: Eleven male participants wore an overt (OVERT) or covert (COVERT) CBRN ensemble and walked (4 km·h-1, 1% grade) for a maximum of 120 min in either a wet bulb globe temperature [WBGT] of 21, 30, or 37°C (Neutral, WarmWet and HotDry, respectively). The trials were ceased if the participants' gastrointestinal temperature reached 39°C, heart rate reached 90% of maximum, walking time reached 120 min or due to self-termination. Results: All participants completed 120 min of walking in Neutral. Work tolerance time was greater in OVERT compared with COVERT in WarmWet (P < 0.001, 116.5[9.9] vs. 88.9[12.2] min, respectively), though this order was reversed in HotDry (P = 0.003, 37.3[5.3] vs. 48.4[4.6] min, respectively). The rate of change in mean body temperature and mean skin temperature was greater in COVERT (0.025[0.004] and 0.045[0.010]°C·min-1, respectively) compared with OVERT (0.014[0.004] and 0.027[0.007]°C·min-1, respectively) in WarmWet (P < 0.001 and P = 0.028, respectively). However, the rate of change in mean body temperature and mean skin temperature was greater in OVERT (0.068[0.010] and 0.170[0.026]°C·min-1, respectively) compared with COVERT (0.059[0.004] and 0.120[0.017]°C·min-1, respectively) in HotDry (P = 0.002 and P < 0.001, respectively). Thermal sensation, thermal comfort, and ratings of perceived exertion did not differ between garments at trial cessation (P > 0.05). Conclusion: Those dressed in OVERT experienced lower thermal strain and longer work tolerance times compared with COVERT in a warm-wet environment. However, COVERT may be an optimal choice in a hot-dry environment. These findings have practical implications for those making decisions on the choice of CBRN ensemble to be used during work.en
dc.description.sponsorshipThis project is financially supported by the Australian Government, managed by the National Security Science and Technology Centre within the Defence Science and Technology Organization, and the US Government through the Technical Support Working Group within the Combating Terrorism Technical Support Office.en
dc.formatapplication/pdfen
dc.languageeng
dc.language.isoenen
dc.publisherFrontiers Mediaen
dc.relation.urlhttps://www.frontiersin.org/articles/10.3389/fphys.2017.00913/fullen
dc.rightsLicence for published version: Creative Commons Attribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectcore temperatureen
dc.subjectClothingen
dc.subjectheat stressen
dc.subjectoccupational worken
dc.subjectpersonal protective equipmenten
dc.titleAn overt chemical protective garment reduces thermal strain compared with a covert garment in warm-wet but not hot-dry environmentsen
dc.typeJournal articleen
dc.identifier.eissn1664-042X
dc.identifier.journalFrontiers in Physiologyen
dc.date.updated2020-03-18T19:11:00Z
dc.contributor.institutionInstitute of Health and Biomedical Innovation, School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia.
pubs.place-of-publicationSwitzerland
dc.date.accepted2017-10-27
rioxxterms.funderAustralian Government, United States Governmenten
rioxxterms.identifier.projectUOW19032020MMen
rioxxterms.versionVoRen
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/en
rioxxterms.licenseref.startdate2020-03-19en
dc.source.volume8
dc.source.issueNOV
dc.source.beginpage913
dc.description.versionPublished version
refterms.dateFCD2020-03-19T15:56:14Z
refterms.versionFCDVoR
refterms.dateFOA2020-03-19T15:56:33Z


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Licence for published version: Creative Commons Attribution 4.0 International
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