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Reliability of “in-season” fitness assessments in youth elite soccer players: a working model for practitioners and coaches

Reliability of “in-season” fitness assessments in youth elite soccer players: a working model for... Purpose: To assess the reliability of a battery of field tests when performed around habitual training during one micro-cycle of the “in-season” period in youth elite soccer players.Methods: n = 19 English Premier League academy players (mean ± SD: age, 18.3 ± 0.2 years; stature, 1.80 ± 0.05 m; body mass, 76.5 ± 7.5 kg; O2 max, 62.3 ± 4.38 ml · kg−1 · min−1; sum of 8 skinfolds, 64.8 ± 17.4 mm) performed; “1RM half-back squat (HBS)”, “vertical jump” (VJ), “Yo-Yo IR2”, “5, 10 & 20 m, sprint”, change of direction “CoD test”, “repeated sprint ability” assessments around their habitual “in-season” training and match-play on two occasions. Intraclass correlations (ICC), typical errors, coefficient of variations (CV), effect sizes and the smallest difference needed to be considered real (MD) were calculated for each test.Results: Most assessments demonstrated good levels of variability (CV; 0.3–4.3%, ICC; 0.83–0.99). To witness an “almost certain beneficial change” (i.e., >MD), changes of approximately 5% are needed for RSAbest, RSAmean, 10m and 20m sprint, “CoD” and 1RM HBS. Whereas, changes of 9–11.5% for CMJ, 5m sprint and Yo-Yo IR2 are needed.Conclusions: The present training and testing “model” is reliable and could be used when evaluating the fitness of highly trained youth elite soccer players during the “in-season” period. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Science and Medicine in Football Taylor & Francis

Reliability of “in-season” fitness assessments in youth elite soccer players: a working model for practitioners and coaches

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Reliability of “in-season” fitness assessments in youth elite soccer players: a working model for practitioners and coaches

Abstract

Purpose: To assess the reliability of a battery of field tests when performed around habitual training during one micro-cycle of the “in-season” period in youth elite soccer players.Methods: n = 19 English Premier League academy players (mean ± SD: age, 18.3 ± 0.2 years; stature, 1.80 ± 0.05 m; body mass, 76.5 ± 7.5 kg; O2 max,...
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Publisher
Taylor & Francis
Copyright
© 2017 Informa UK Limited, trading as Taylor & Francis Group
ISSN
2473-4446
eISSN
2473-3938
DOI
10.1080/24733938.2017.1411603
Publisher site
See Article on Publisher Site

Abstract

Purpose: To assess the reliability of a battery of field tests when performed around habitual training during one micro-cycle of the “in-season” period in youth elite soccer players.Methods: n = 19 English Premier League academy players (mean ± SD: age, 18.3 ± 0.2 years; stature, 1.80 ± 0.05 m; body mass, 76.5 ± 7.5 kg; O2 max, 62.3 ± 4.38 ml · kg−1 · min−1; sum of 8 skinfolds, 64.8 ± 17.4 mm) performed; “1RM half-back squat (HBS)”, “vertical jump” (VJ), “Yo-Yo IR2”, “5, 10 & 20 m, sprint”, change of direction “CoD test”, “repeated sprint ability” assessments around their habitual “in-season” training and match-play on two occasions. Intraclass correlations (ICC), typical errors, coefficient of variations (CV), effect sizes and the smallest difference needed to be considered real (MD) were calculated for each test.Results: Most assessments demonstrated good levels of variability (CV; 0.3–4.3%, ICC; 0.83–0.99). To witness an “almost certain beneficial change” (i.e., >MD), changes of approximately 5% are needed for RSAbest, RSAmean, 10m and 20m sprint, “CoD” and 1RM HBS. Whereas, changes of 9–11.5% for CMJ, 5m sprint and Yo-Yo IR2 are needed.Conclusions: The present training and testing “model” is reliable and could be used when evaluating the fitness of highly trained youth elite soccer players during the “in-season” period.

Journal

Science and Medicine in Football – Taylor & Francis

Published: Jul 3, 2018

Keywords: Youth-soccer; reliability; in-season; yo-yo test; sprint; strength

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