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Title: Conductive and evaporative precooling lowers mean skin temperature and improves time trial performance in the heat
Authors: Faulkner, Steve H.
Hupperets, Maarten
Hodder, S.G.
Havenith, George
Keywords: Heat balance
heat stress
Ice vest
Phase change
Thermoregulation
Issue Date: 2015
Publisher: Wiley-Blackwell
Citation: FAULKNER, S.H. ... et al, 2015. Conductive and evaporative precooling lowers mean skin temperature and improves time trial performance in the heat. Scandinavian Journal of Medicine & Science in Sports, 25, pp.183-189
Abstract: Self-paced endurance performance is compromised by moderate-to-high ambient temperatures that are evident in many competitive settings. It has become common place to implement precooling prior to competition in an attempt to alleviate perceived thermal load and performance decline. The present study aimed to investigate precooling incorporating different cooling avenues via either evaporative cooling alone or in combination with conductive cooling on cycling time trial performance. Ten trained male cyclists completed a time trial on three occasions in hot (35 °C) ambient conditions with the cooling garment prepared by (a) immersion in water (COOL, evaporative); (b) immersion in water and frozen (COLD, evaporative and conductive); or (c) no precooling (CONT). COLD improved time trial performance by 5.8% and 2.6% vs CONT and COOL, respectively (both P < 0.05). Power output was 4.5% higher for COLD vs CONT (P < 0.05). Mean skin temperature was lower at the onset of the time trial following COLD compared with COOL and CONT (both P < 0.05) and lasted for the first 20% of the time trial. Thermal sensation was perceived cooler following COOL and COLD. The combination of evaporative and conductive cooling (COLD) had the greatest benefit to performance, which is suggested to be driven by reduced skin temperature following cooling.
Description: This is the peer reviewed version of the article, which has been published in final form at http://dx.doi.org/10.1111/sms.12373. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Version: Accepted for publication
DOI: 10.1111/sms.12373
URI: https://dspace.lboro.ac.uk/2134/18112
Publisher Link: http://dx.doi.org/10.1111/sms.12373
ISSN: 0905-7188
Appears in Collections:Published Articles (Design School)

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