下蹲跳推进动力学可区分达到国家资格的年轻举重运动员。

Countermovement Jump Propulsive Kinetics Distinguish Young Weightlifters Who Attain National Qualification.

作者信息

Morris Stephanie J, Oliver Jon L, Pedley Jason S, Kember Lucy S, Haff G Gregory, Lloyd Rhodri S

机构信息

Youth Physical Development Center, Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom.

Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand.

出版信息

J Strength Cond Res. 2025 Jun 24. doi: 10.1519/JSC.0000000000005187.

DOI:10.1519/JSC.0000000000005187

PMID:40570288

Abstract

Morris, SJ, Oliver, JL, Pedley, JS, Kember, LS, Haff, GG, and Lloyd, RS. Countermovement jump propulsive kinetics distinguish young weightlifters who attain national qualification. J Strength Cond Res XX(X): 000-000, 2025-Researchers have explored the relationship between force-generating abilities and weightlifting performance in young athletes, but it remains unclear whether isometric midthigh pull (IMTP) and countermovement jump (CMJ) kinetics can distinguish between those who achieve national qualification and those who do not. This study aimed to (a) compare IMTP and CMJ kinetics between young weightlifters who did and did not attain national qualification and (b) identify kinetic variables that predict qualification. Thirty-seven young weightlifters were classified into 2 groups: those who qualified (QUAL; age = 17.1 ± 0.3 years, maturity offset = 3.13 ± 0.6 years, males = 15, females = 10) and those who did not qualify (DNQ; age = 15.8 ± 2.2 years, maturity offset = 2.7 ± 1.6 years, males = 6, females = 6). Subjects completed CMJ and IMTP tests on dual force plates. T-tests revealed that QUAL showed significantly (p < 0.05) higher relative force at minimum displacement (g = 0.82), average relative propulsive force (g = 1.76), and average propulsive velocity during the CMJ (g = 0.68), along with a shorter propulsive phase (g = -1.22). In the IMTP, QUAL demonstrated higher relative peak force. Statistical parametric mapping revealed greater relative vertical force at 69-88% of movement time in QUAL, indicating higher force during the CMJ propulsive phase. Binary logistic regression identified CMJ average relative propulsive force and propulsive phase duration as significant predictors of qualification, with strong predictive accuracy (area under the receiver operator curve [AUC] = 0.910, p < 0.05 and AUC = 0.807, p < 0.05), highlighting the value of these variables when identifying and developing young weightlifters for national qualification.

摘要

莫里斯、SJ、奥利弗、JL、佩德利、JS、肯伯、LS、哈夫、GG和劳埃德、RS。反向纵跳推进动力学可区分获得国家资格的年轻举重运动员。《力量与体能研究杂志》XX(X)：000 - 000，2025年。研究人员探讨了年轻运动员力量产生能力与举重成绩之间的关系，但等长中大腿拉力（IMTP）和反向纵跳（CMJ）动力学能否区分获得国家资格者和未获得国家资格者仍不清楚。本研究旨在（a）比较获得和未获得国家资格的年轻举重运动员的IMTP和CMJ动力学，以及（b）确定预测资格的动力学变量。37名年轻举重运动员被分为两组：获得资格者（QUAL；年龄 = 17.1 ± 0.3岁，成熟度偏移 = 3.13 ± 0.6岁，男性 = 15名，女性 = 10名）和未获得资格者（DNQ；年龄 = 15.8 ± 2.2岁，成熟度偏移 = 2.7 ± 1.6岁，男性 = 6名，女性 = 6名）。受试者在双测力板上完成CMJ和IMTP测试。t检验显示，QUAL在最小位移时的相对力显著更高（g = 0.82）、平均相对推进力（g = 1.76）以及CMJ期间的平均推进速度（g = 0.68），同时推进阶段更短（g = -1.22）。在IMTP中，QUAL表现出更高的相对峰值力。统计参数映射显示，QUAL在运动时间的69% - 88%时相对垂直力更大，表明在CMJ推进阶段力更高。二元逻辑回归确定CMJ平均相对推进力和推进阶段持续时间是资格的显著预测因素，具有很强的预测准确性（受试者操作特征曲线下面积[AUC] = 0.910，p < 0.05和AUC = 0.807，p < 0.05），突出了这些变量在识别和培养有国家资格的年轻举重运动员时的价值。