Thomas Christopher, Dos'Santos Thomas, Comfort Paul, Jones Paul A
Directorate of Sport, Exercise and Physiotherapy, University of Salford, Salford, Greater Manchester M6 6PU, UK.
Sports (Basel). 2017 Feb 14;5(1):15. doi: 10.3390/sports5010015.
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: = 8: age 17.1 ± 2.2 years; height 175.6 ± 3.5 cm; mass 80.2 ± 3.6 kg; females: = 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.
本研究的目的是调查青少年运动员中常见的力量和功率相关指标在不同测试时段之间的可靠性。17名青少年运动员（男性8名：年龄17.1±2.2岁；身高175.6±3.5厘米；体重80.2±3.6千克；女性9名：年龄16.9±2.6岁；身高178.5±4.3厘米；体重71.5±4.5千克）参与了本研究。等速测力、等长中大腿拉伸（IMTP）、反向纵跳（CMJ）以及水平跳跃（立定跳远（SBJ）和单腿跳（SLH））均在不同日期各进行两次，间隔7天。通过组内相关系数（ICC）、变异系数（%CV）、测量标准误差（SEM）和最小可检测差异（SDD）来评估可靠性。组内相关系数和变异系数表明，除双侧和单侧站立IMTP期间的力量发展速率和冲量指标外，所有指标在不同测试时段之间的可靠性均可接受（ICC>0.63；CV<11%）。最小可检测差异表明，在评估青少年运动员时，CMJ高度变化>7%、SLH距离变化>8%、等长峰值力变化>10%以及等速峰值扭矩变化>5%应被视为有意义的表现变化。
