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Sports 2017, 5(1), 15; doi:10.3390/sports5010015

Between-Session Reliability of Common Strength- and Power-Related Measures in Adolescent Athletes

Directorate of Sport, Exercise and Physiotherapy, University of Salford, Salford, Greater Manchester M6 6PU, UK
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Author to whom correspondence should be addressed.
Academic Editor: Eling Douwe de Bruin
Received: 5 January 2017 / Revised: 27 January 2017 / Accepted: 7 February 2017 / Published: 14 February 2017
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Abstract

The purpose of this study was to investigate the between-session reliability of common strength- and power-related measures in adolescent athletes. Seventeen adolescent athletes (males: n = 8: age 17.1 ± 2.2 years; height 175.6 ± 3.5 cm; mass 80.2 ± 3.6 kg; females: n = 9; age 16.9 ± 2.6 years; height 178.5 ± 4.3 cm; mass 71.5 ± 4.5 kg) participated in this study. Isokinetic dynamometry, isometric mid-thigh pull (IMTP), countermovement jump (CMJ), and horizontal jumps (standing broad jump (SBJ) and single-leg hop (SLH)) were each performed twice on separate days, seven days apart. Reliability was assessed by intraclass correlation coefficient (ICC), coefficient of variation (%CV), standard error of measurement (SEM), and smallest detectable difference (SDD). Intraclass correlation coefficients and CV demonstrated acceptable between-session reliability for all measures (ICC > 0.63; CV < 11%), except rate of force development and impulse measures during bilateral and unilateral stance IMTP. Smallest detectable differences demonstrated that changes in performance of >7% CMJ height, >8% SLH distance, >10% in peak isometric force, and >5% in isokinetic peak torques should be considered meaningful, when assessing adolescent athletes. View Full-Text
Keywords: jump height; isokinetics; isometric peak force; countermovement jump; hop tests jump height; isokinetics; isometric peak force; countermovement jump; hop tests
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Thomas, C.; Dos’Santos, T.; Comfort, P.; Jones, P.A. Between-Session Reliability of Common Strength- and Power-Related Measures in Adolescent Athletes. Sports 2017, 5, 15.

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