Between-session reliability of common strength- and power-related measures in adolescent athletes

Thomas, C; Dos'Santos, T; Comfort, P; Jones, PA

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.

Citation

Thomas, C., Dos'Santos, T., Comfort, P., & Jones, P. (2017). Between-session reliability of common strength- and power-related measures in adolescent athletes. Sports, 5(1), 15. https://doi.org/10.3390/sports5010015

• Journal Article Type: Article
• Acceptance Date: Feb 7, 2017
• Online Publication Date: Feb 14, 2017
• Publication Date: Feb 14, 2017
• Deposit Date: Mar 3, 2017
• Publicly Available Date: Mar 3, 2017
• Journal: Sports
• Publisher: MDPI
• Volume: 5
• Issue: 1
• Pages: 15
• DOI: https://doi.org/10.3390/sports5010015
• Publisher URL: http://dx.doi.org/10.3390/sports5010015
• Related Public URLs: http://www.mdpi.com/journal/sports