Continuous and intermittent heat acclimation and decay in team sport athletes |
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| Authors: | Daniel M Duvnjak-Zaknich Karen E Wallman Brian T Dawson Peter Peeling |
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| Institution: | 1. School of Human Sciences (Exercise and Sport Science), The University of Western Australia, Crawley, Western Australia;2. Western Australian Institute of Sport, Mt Claremont, Western Australia |
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| Abstract: | The aim of this study was to compare the impact of continuous (CON) and intermittent (INT) heat acclimation protocols on repeat-sprint performance, and to also assess the degree of performance decay following acclimation. Using a pair-matched, between subjects design, 16 trained male team sport athletes were allocated to either INT (8 sessions over 15 days) or CON acclimation (8 sessions over 8 days) groups. Participants performed a heat tolerance test (HTT) involving 60-min of repeat-sprint cycling with a 10-min half time break (in 35.3?±?0.7°C, 60.1?±?4.0%; RH) two days pre- (pre-HTT) and post-acclimation (post-HTT1). Decay was investigated with two further HTT's completed over the next two weeks (post-HTT2 and post-HTT3). Results showed the post-HTT1 performance variables mean power (pre-HTT; INT?=?1002.07?±?173.74, CON?=?1057.10?±?180.07 / post-HTT1; INT?=?1097.11?±?186.85, CON?=?1163.77?±?184.65 W), mean power (W.kg?1), total work (kJ) and work (J.kg?1)] were greater than pre-HHT (p?p?
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| Keywords: | Heat tolerance heat perception thermal strain repeat sprint exercise |
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