Reliability, validity, and performance characteristics of elite adolescent athletes at different stages of maturity in the 10 to 5 repeated jump test

Baker, James, Shillabeer, Barry, Brandner, Christopher, Graham-Smith, Philip, Mills, Patrick and Read, Paul J ORCID: 0000-0002-1508-8602 (2022) Reliability, validity, and performance characteristics of elite adolescent athletes at different stages of maturity in the 10 to 5 repeated jump test. Pediatric Exercise Science, 34 (1). pp. 20-27. doi:10.1123/pes.2020-0270

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Abstract

Purpose: To examine the reliability, validity, and performance characteristics of the 10 to 5 repeated jump test (10–5 RJT) in adolescent male athletes. The 10–5 RJT has been shown to be a valid and reliable test of reactive strength index (RSI) in older adolescents (age 17–19 y), but less is known in younger adolescent athletes at different stages of maturity. Methods: Athletes (age 11–17 y) completed the 10–5 RJT on 2 days, 1 week apart, to examine the reliability (n = 41), validity (n = 18) of the test. Athletes were classified as pre, circa, or post peak height velocity (PHV) height velocity using maturity offset to examine the effect of maturation status on RSI, flight time (FT), ground contact time (GCT), and jump height (JH) (n = 68) using a cross-sectional design. Results: Paired samples t tests showed no significant differences (P ≥ .05), and Bland–Altman analysis showed no bias and close limits of agreement for RSI, JH, FT, and GCT between the contact mat and force plate. Interday reliability was rated excellent for RSI (intraclass correlation coefficient = .91) and good for GCT, FT, and JH (intraclass correlation coefficient = .81–.85). All variables had a coefficient of variation ≤ 10%. RSI increased across maturation groups, with significant differences between pre-PHV and post-PHV groups (P = .014, d = 1.00). Conclusion: The 10–5 RJT is a valid and reliable test for adolescent male athletes. Greater RSI with advancing maturity was primarily due to increased FT and JH, with GCT remaining similar.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: Force plate; Jump mat; Plyometrics; Youth; Repeatability
Subjects: Q Science > QP Physiology > QP301.H75 Physiology. Sport
Divisions: Schools and Research Institutes > School of Sport and Exercise > Applied Sport & Exercise Sciences
Research Priority Areas: Health, Life Sciences, Sport and Wellbeing
Depositing User: Rhiannon Goodland
Date Deposited: 11 Mar 2022 09:31
Last Modified: 11 Mar 2022 09:31
URI: https://eprints.glos.ac.uk/id/eprint/10644

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