Effectiveness of hand cooling and a cooling jacket on post-exercise cooling rates in hyperthermic athletes

Maroni, Tessa D., Dawson, Brian, Barnett, Kimberley, Guelfi, Kym, Brade, Carly, Naylor, Louise, Brydges, Chris and Wallman, Karen (2018) Effectiveness of hand cooling and a cooling jacket on post-exercise cooling rates in hyperthermic athletes. European Journal of Sport Science, 18 (4). pp. 441-449. ISSN 1746-1391

[img] Text (This is an Accepted Manuscript of an article published by Taylor & Francis in European Journal of Sport Science on 24 January 2018, available online https://doi.org/ 10.1080/17461391.2018.1425484.)
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Abstract

This study compared the effects of a hand cooling glove (∼16°C water temperature; subatmospheric pressure of -40 mmHg) and a cooling jacket (CJ) on post-exercise cooling rates (gastrointestinal core temperature, Tc; skin temperature, Tsk) and cognitive performance (the Stroop Colour-Word test). Twelve male athletes performed four trials (within subjects, counterbalanced design) involving cycling at a workload equivalent to 75% ⩒Omax in heat (35.7 ± 0.2°C, 49.2 ± 2.6% RH) until a Tc of 39°C or exhaustion occurred. A 30-min cooling period (in 22.3 ± 0.3°C, 42.1 ± 3.6% RH) followed, where participants adopted either one-hand cooling (1H), two-hand cooling (2H), wore a CJ or no cooling (NC). No significant differences were seen in Tc and Tsk cooling rates between trials; however, moderate effect sizes (d = 0.50-0.76) suggested Tc cooling rates to be faster for 1H, 2H and CJ compared to NC after 5 min; 1H and CJ compared to NC after 10 min and for CJ to be faster than 2H at 25-30 min. Reaction times on the cognitive test were similar between all trials after the 30 min cooling/no-cooling period (p > .05). In conclusion, Tc cooling rates were faster with 1H and CJ during the first 10 min compared to NC, with minimal benefit associated with 2H cooling. Reaction time responses were not impacted by the use of the glove(s) or CJ.

Item Type: Article
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
Q Science > QP Physiology
R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Departments > Sport and Exercise Sciences
Depositing User: Tessa Maroni
Date Deposited: 22 May 2020 14:38
Last Modified: 22 May 2020 14:38
URI: http://eprints.chi.ac.uk/id/eprint/5158

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