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

[img] 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.)
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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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