McMahon, Dos'Santos, Jones, Thomasson, and Comfort are with the Directorate of Psychology and Sport, University of Salford, Salford, Greater Manchester, United Kingdom.
Lake is with the Department of Sport and Exercise Sciences, University of Chichester, Chichester, West Sussex, United Kingdom.
J Strength Cond Res. 2022 Jun 1;36(6):1691-1698. doi: 10.1519/JSC.0000000000003697. Epub 2020 Jul 16.
McMahon, JJ, Lake, JP, Dos'Santos, T, Jones, PA, Thomasson, ML, and Comfort, P. Countermovement jump standards in rugby league: what is a "good" performance? J Strength Cond Res 36(6): 1691-1698, 2022-The countermovement jump (CMJ) is considered an important test in rugby league, and the force platform is the recommended tool for assessing CMJ performance in this cohort. Because of inconsistent methods applied across previous studies, there is currently a lack of understanding of what constitutes a "good" CMJ performance, with respect to the typical CMJ metrics that are reported for rugby league players. The purpose of this study was, therefore, to produce a scale of reference values for the jump height (JH), reactive strength index modified (RSImod), and mean (PPmean) and peak (PPpeak) propulsion power (relative to body mass) for top-level senior rugby league players competing in the global "forward" and "back" positional groups. One hundred four players (55 forwards and 49 backs) from the top 2 tiers of English rugby league performed 3 CMJs on a force platform at the beginning of pre-season training. The JH, RSImod, PPmean, and PPpeak were calculated using criterion methods, and a scale of norm-referenced values (percentiles) was produced for each positional group. The backs outperformed the forwards for each CMJ metric reported, thus supporting the production of position-specific norm-referenced values. When each positional group was separated into quartile subgroups, the respective JH, RSImod, PPmean, and PPpeak values were mostly largely and significantly different both within and between positions. The presented scale of reference values can, therefore, be used to determine the performance standards of rugby league forwards and backs with respect to the most commonly reported CMJ-derived variables for this cohort.
麦克马洪，JJ，雷克，JP，多斯桑托斯，T，琼斯，PA，托马森，ML 和舒适，P. 橄榄球联盟中的反跳标准：什么是“好”的表现？J 力量与条件研究 36(6)：1691-1698，2022-反跳（CMJ）被认为是橄榄球联盟中的一个重要测试，力台是评估该队列中 CMJ 表现的推荐工具。由于之前的研究中应用的方法不一致，目前对于橄榄球联盟运动员报告的典型 CMJ 指标，什么构成了“好”的 CMJ 表现，还缺乏了解。因此，本研究的目的是为顶级高级橄榄球联盟球员在全球“前锋”和“后卫”位置组中竞争时的跳高技术（JH）、改良反应强度指数（RSImod）以及平均（PPmean）和峰值（PPpeak）推进力（相对于体重）生成一个参考值量表。104 名来自英国橄榄球联赛顶级 2 个级别（55 名前锋和 49 名后卫）的球员在季前训练开始时在力台上进行了 3 次 CMJ。使用标准方法计算 JH、RSImod、PPmean 和 PPpeak，并为每个位置组生成一个正态参考值（百分位数）量表。报告的每个 CMJ 指标中，后卫的表现均优于前锋，因此支持生成特定位置的正态参考值。当每个位置组分为四分位亚组时，各自的 JH、RSImod、PPmean 和 PPpeak 值在位置内和位置间大多有很大且显著的差异。因此，所提出的参考值量表可用于确定橄榄球联盟前锋和后卫相对于该队列中最常报告的 CMJ 衍生变量的表现标准。
