Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
©Journal of Sports Science and Medicine (2018) 17, 485 - 491

Research article
Effects of Half-Time Cooling Using A Cooling Glove and Jacket on Manual Dexterity and Repeated-Sprint Performance in Heat
Tessa Maroni1, , Brian Dawson1, Myles Dennis1, Louise Naylor1, Carly Brade2, Karen Wallman1
Author Information
1 School of Human Sciences (Exercise and Sports Science), The University of Western Australia, Crawley, WA, Australia
2 School of Physiotherapy and Exercise Science, Curtin University, Perth, WA, Australia

Tessa Maroni
✉ School of Human Sciences (Exercise and Sports Science), M408, The University of Western Australia, 35 Stirling Hwy, Crawley, Perth, WA, 6009, Australia
Publish Date
Received: 16-05-2018
Accepted: 27-07-2018
Published (online): 14-08-2018
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This study aimed to assess the separate and combined effects of a cooling glove (CG) and a gel-cooling jacket (CJ) used during a half-time break on manual dexterity performance (Purdue Pegboard test) and subsequent repeat-sprint cycling performance in hot conditions. Twelve male athletes performed four experimental trials (within subjects, counterbalanced design) that consisted of: wearing a CG, wearing a CJ, combination of CG and CJ (CG+J) or a no-cooling control (NC) for 15 min during a 20 min half-time break performed between 2 x 30 min repeated-sprint cycling bouts in heat (35.0 ± 1.2°C and 52.5 ± 7.4% RH). Manual dexterity (dominant and non-dominant hand) was assessed immediately before and after the first-half of exercise, then immediately after cooling and the second-half of exercise. No differences were found for manual dexterity performance between trials or over time (p > 0.05). Additionally, no differences were found for power and work performance variables assessed during the second-half of exercise (p > 0.05), however participants felt ‘cooler’ wearing CG+J compared to NC (Thermal Sensation scale; p = 0.041). Further, no differences were found between trials for changes in gastrointestinal core temperature for any time period assessed (p > 0.05). In conclusion, the cooling trials did not affect manual dexterity or second-half repeated-sprint cycling performance compared to NC.

Key words: Core temperature, cooling modalities, cycling performance, Purdue pegboard test

           Key Points
  • Cooling with a cooling glove or jacket, alone or in combination, during a half time break did not further significantly decrease core temperature compared to no cooling.
  • Cooling did not improve second half repeated-sprint cycle performance.
  • The cooling glove did not impair manual dexterity performance of the dominant hand, which is important for skills involving use of this hand.
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