School of Nursing, Midwifery, Health Sciences & Physiotherapy, The University of Notre Dame Australia, Fremantle, Australia.
School of Behavioural and Health Sciences, Australian Catholic University, Brisbane, Australia.
J Strength Cond Res. 2023 Mar 1;37(3):641-645. doi: 10.1519/JSC.0000000000004299. Epub 2022 Jul 1.
Edwards, T, Weakley, J, Woods, CT, Breed, R, Benson, AC, Suchomel, TJ, and Banyard, HG. Comparison of countermovement jump and squat jump performance between 627 state and non-state representative junior Australian football players. J Strength Cond Res 37(3): 641-645, 2023-This cross-sectional study investigated differences in lower-body power of state and nonstate representative junior Australian football (AF) players through countermovement jump (CMJ) and squat jump (SJ) performance. A total of 627 players performed the CMJ and SJ at the end of the preseason phase over a 2-week period, with each player grouped according to their age (under 18 [U18] or under 16 [U16]), and highest competition level played (state representation and nonstate representation). One-way multivariate analysis of variance (MANOVA), follow up ANOVA's, and Cohen's d effect sizes were used to identify significant main effects and between-group differences. Statistical significance was set at α < 0.05. Significant small-to-moderate effect size differences were observed between competition level, with state U18 and U16 players recording greater CMJ and SJ height, and peak power (PP), compared with their nonstate representative peers, respectively. Similarly, significant small-to-moderate effect size differences existed between age groups, with nonstate U18 players recording greater CMJ and SJ height and PP than nonstate U16 counterparts. However, state U18 and state U16 only differed in CMJ PP. No differences were found between competition level or age groups for the difference between CMJ and SJ jump height (CMJSJ diff ). Together, these findings suggest that state and nonstate representative junior AFs may have a similar ability to use the stretch-shortening cycle, despite state representative players jumping higher in the CMJ and SJ.
爱德华兹、T、威克利、J、伍兹、CT、布雷德、R、本森、AC、苏科梅尔、TJ 和班亚德、HG。627 名州和非州代表的澳大利亚青少年足球运动员在反跳和深蹲跳表现上的比较。J 力量与条件研究 37(3)：641-645，2023-这项横断面研究通过反跳跳（CMJ）和深蹲跳（SJ）表现，调查了州和非州代表的澳大利亚青少年足球（AF）运动员在下肢力量上的差异。共有 627 名运动员在赛季前阶段的最后两周内进行了 CMJ 和 SJ 测试，每位运动员根据年龄（18 岁以下[U18]或 16 岁以下[U16]）和最高比赛水平（州代表和非州代表）分组。采用单因素多变量方差分析（MANOVA）、后续方差分析和科恩's d 效应量来确定显著的主效应和组间差异。统计显著性设定为 α < 0.05。在竞争水平之间观察到了显著的小到中等效应量差异，州 U18 和 U16 运动员的 CMJ 和 SJ 高度以及峰值功率（PP）均大于其非州代表的同龄人。同样，在年龄组之间也存在显著的小到中等效应量差异，非州 U18 运动员的 CMJ 和 SJ 高度以及 PP 大于非州 U16 运动员。然而，州 U18 和州 U16 仅在 CMJ PP 上存在差异。在 CMJ 和 SJ 跳高技术（CMJSJ diff）方面，在竞争水平或年龄组之间没有发现差异。总的来说，这些发现表明，尽管州代表运动员在 CMJ 和 SJ 中跳得更高，但州和非州代表的青少年 AF 可能具有相似的使用伸展-缩短周期的能力。
