使用反跳式跳跃测量法评估动态离心力量：一项初步研究。
Using the Countermovement Jump Metrics to Assess Dynamic Eccentric Strength: A Preliminary Study.
机构信息
Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan 333, Taiwan.
Department of Sports Training Science-Combats, National Taiwan Sport University, Taoyuan 333, Taiwan.
出版信息
Int J Environ Res Public Health. 2022 Dec 3;19(23):16176. doi: 10.3390/ijerph192316176.
Background: This study aimed to determine the validity and reliability of the countermovement jump (CMJ) as a dynamic eccentric (Ecc) strength test. Methods: Thirty-three college male student-athletes were recruited to participate in this study. The participants first performed CMJs with the second consisting of one repetition maximum back squat (1RM-BS) test. CMJ and 1RM-BS tests were performed on twin force plates. Results: The CMJ had significant correlations with the Ecc peak force (EccPF), and Ecc mean force (EccMF) of 1RM-BS, respectively (r = 0.61−0.69). Moreover, all parameters had a coefficient of variation (CV) < 10%. The intraclass correlation coefficient (ICC) values were moderate to excellent for each metric using the CMJ (0.94−0.97). The 1RM-BS and CMJ EccPF, EccMF Bland-Altman bias estimate variance ratio is 1.31−1.67, showing a moderate-large correlation in the Bland-Altman plot. Conclusions: CMJ ECC phase kinetics were associated with the 1RM-BS EccPF and EccMF. The CMJ can be an alternative tool for eccentric dynamic strength assessment.
背景
本研究旨在确定反跳（CMJ）作为动态离心（Ecc）强度测试的有效性和可靠性。
方法
招募了 33 名男性大学生运动员参加本研究。参与者首先进行 CMJ 测试，第二次进行 1RM 深蹲（1RM-BS）测试，各进行一次重复。CMJ 和 1RM-BS 测试均在双力板上进行。
结果
CMJ 与 1RM-BS 的 Ecc 峰值力（EccPF）和 Ecc 平均力（EccMF）均呈显著相关（r = 0.61-0.69）。此外，所有参数的变异系数（CV）均<10%。使用 CMJ 的各项指标的组内相关系数（ICC）值为中度至高度（0.94-0.97）。1RM-BS 和 CMJ 的 EccPF、EccMF 的 Bland-Altman 偏差估计方差比为 1.31-1.67，Bland-Altman 图中显示出中度至较大的相关性。
结论
CMJ 的 Ecc 相动力学与 1RM-BS 的 EccPF 和 EccMF 相关。CMJ 可作为离心动态强度评估的替代工具。
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