Hand and torso pre-cooling does not enhance subsequent high-intensity cycling or cognitive performance in heat

Maroni, Tessa D., Dawson, Brian, Landers, Grant, Naylor, Louise and Wallman, Karen (2019) Hand and torso pre-cooling does not enhance subsequent high-intensity cycling or cognitive performance in heat. Temperature. ISSN 2332-8959

Text (This is an Accepted Manuscript of an article published by Taylor & Francis in Temperature on 25 June 2019, available online https://doi.org/10.1080/23328940.2019.1631731.) Temperature Manuscript Revision FINAL Accepted Version.docx.pdf - Accepted Version Available under License Creative Commons Attribution. Download (927kB)

Abstract

The purpose of this study was to compare the separate and combined effects of two practical cooling methods (hand and torso) used prior to exercise on subsequent high-intensity cycling performance in heat. Ten trained male cyclists (V̇O2peak: 65.7 ± 10.7 ml.kg−1.min−1) performed four experimental trials (randomised within-subjects design) involving 30-min of pre-cooling (20-min seated; PRE-COOL, 10 min warm-up; PRE-COOL+WUP), while using a: (1) hand-cooling glove (CG); (2) cooling jacket (CJ); (3) both CG and CJ (CG+J); or (4) no-cooling (NC) control, followed by a cycling race simulation protocol (all performed in 35.0 ± 0.6°C and 56.6 ± 4.5% RH). During the 30-min of pre-cooling, no reductions in core (Tc) or mean skin temperature (Tsk) occurred; however, Tsk remained lower in the CJ and CG+J trials compared to NC and CG (p = 0.002–0.040, d= 0.55–1.01). Thermal sensation ratings also indicated that participants felt “hotter” during NC compared to all other trials during both PRE-COOL and PRE-COOL+WUP (p = 0.001–0.015, d= 1.0–2.19), plus the early stages of exercise (sets 1–2; p = 0.005–0.050, d= 0.56–1.22). Following cooling, no differences were found for absolute Tc and Tsk responses between trials over the entire exercise protocol (p > 0.05). Exercise and cognitive (working memory) performance also did not differ between trials (p = 0.843); however, cognitive performance improved over time in all trials (p < 0.001). In summary, pre-cooling (20-min seated and 10-min warm-up) in heat did not improve subsequent high-intensity cycling performance, cognitive responses and associated thermoregulatory strain (Tc and Tsk) compared to control.

Item Type:	Article
Subjects:	G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports Q Science > QP Physiology
Divisions:	Departments > Sport and Exercise Sciences
Depositing User:	Tessa Maroni
Date Deposited:	22 May 2020 14:23
Last Modified:	25 Jun 2020 00:10
URI:	http://eprints.chi.ac.uk/id/eprint/5160

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