Changes in repeated-sprint performance in relation to change in locomotor profile in highly-trained young soccer players |
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| Authors: | Martin Buchheit Alberto Mendez-Villanueva |
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| Institution: | 1. Sport Science Department, Aspire, Academy for Sports Excellence, Doha, Qatarmartin.buchheit@aspire.qa;3. Sport Science Department, Aspire, Academy for Sports Excellence, Doha, Qatar |
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| Abstract: | AbstractThe aim of this study was to examine the effects of changes in maximal aerobic (MAS) and sprinting (MSS) speeds and the anaerobic reserve (ASR) on repeated-sprint performance. Two hundred and seventy highly-trained soccer players (14.5 ± 1.6 year) completed three times per season (over 5 years) a maximal incremental running test to approach MAS, a 40-m sprint with 10-m splits to assess MSS and a repeated-sprint test (10 × 30-m sprints), where best (RSb) and mean (RSm) sprint times, and percentage of speed decrement (%Dec) were calculated. ASR was calculated as MSS-MAS. While ?RSb were related to ?MSS and ?body mass (r2 = 0.42, 90%CL0.34;0.49] for the overall multiple regression, n = 334), ?RSm was also correlated with ?MAS and ?sum of 7 skinfolds (r2 = 0.43 0.35;0.50], n = 334). There was a small and positive association between ?%Dec and ?MAS (r2 = 0.02 ?0.07;0.11], n = 334). Substantial ?MSS and ?MAS had a predictive value of 70 and 55% for ?RSm, respectively. Finally, ?ASR per se was not predictive of ?RSm (Cohen’s = +0.8 to ?0.3 with increased ASR), but the greater magnitude of ?RSm improvement was observed when MSS, MAS and ASR increased together (0.8 vs. +0.4 with ASR increased vs. not, additionally to MSS and MAS). Low-cost field tests aimed at assessing maximal sprinting and aerobic speeds can be used to monitor ?RS performance. |
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| Keywords: | football association repeated-sprint ability maximal sprinting speed maximal aerobic speed anaerobic speed reserve |
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