Tallis Jason, Morris Rhys O, Duncan Michael J, Eyre Emma L J, Guimaraes-Ferreira Lucas
Centre for Physical Activity, Sport and Exercise Science, Coventry University, Coventry CV1 5FB, UK.
School of Life Sciences, Coventry University, Coventry CV1 5FB, UK.
Sports (Basel). 2023 Jun 13;11(6):117. doi: 10.3390/sports11060117.
Given the importance of vertical jump assessments as a performance benchmarking tool, the assessment of neuromuscular function and indicator of health status, accurate assessment is essential. This study compared countermovement jump (CMJ) height assessed using MyJump2 (JH) to force-platform-derived jump height calculated from time in the air (JH) and take-off velocity (JH) in youth grassroots soccer players. Thirty participants (Age: 8.7 ± 0.42 yrs; 9 females) completed bilateral CMJs on force platforms whilst jump height was simultaneously evaluated using MyJump2. Intraclass correlation coefficients (ICC), Standard error of measurement (SEM), coefficient of variance (CV) and Bland-Altman analysis were used to compare performance of MyJump2 to force-platform-derived measures of CMJ height. The median jump height was 15.5 cm. Despite a high level of agreement between JH and JH (ICC = 0.955), CV (6.6%), mean bias (1.33 ± 1.62 cm) and 95% limits of agreement (LoA -1.85-4.51 cm) were greater than in other comparisons. JH performed marginally better than JH when compared to JH (ICC = 0.971; 95% CI's = 0.956-0.981; SEM = 0.3 cm; CV = 5.7%; mean bias = 0.36 ± 1.61 cm; LoA = -3.52-2.80 cm). Irrespective of method, jump height did not differ between males and females ( > 0.381; < 0.093), and the comparison between assessment tools was not affected by sex. Given low jump heights achieved in youth, JH and JH should be used with caution. JH should be used to guarantee accuracy in the calculation of jump height.
鉴于垂直纵跳评估作为一种性能基准工具、神经肌肉功能评估以及健康状况指标的重要性，准确评估至关重要。本研究比较了使用MyJump2评估的反向纵跳（CMJ）高度与根据青少年基层足球运动员的空中时间（JH）和起跳速度（JH）计算得出的力平台衍生纵跳高度。30名参与者（年龄：8.7±0.42岁；9名女性）在力平台上完成双侧CMJ，同时使用MyJump2评估纵跳高度。组内相关系数（ICC）、测量标准误差（SEM）、变异系数（CV）和Bland-Altman分析用于比较MyJump2与力平台衍生的CMJ高度测量结果的性能。纵跳高度中位数为15.5厘米。尽管JH和JH之间的一致性较高（ICC = 0.955），但CV（6.6%）、平均偏差（1.33±1.62厘米）和95%一致性界限（LoA -1.85 - 4.51厘米）均大于其他比较结果。与JH相比，JH与JH比较时表现略好（ICC = 0.971；95%置信区间 = 0.956 - 0.981；SEM = 0.3厘米；CV = 5.7%；平均偏差 = 0.36±1.61厘米；LoA = -3.52 - 2.80厘米）。无论采用何种方法，男性和女性的纵跳高度均无差异（> 0.381；< 0.093），评估工具之间的比较不受性别影响。鉴于青少年的纵跳高度较低，JH和JH应谨慎使用。应使用JH以确保纵跳高度计算的准确性。
