Characteristics of three lower limb joint kinetics affecting rebound jump performance.
Characteristics of three lower limb joint kinetics affecting rebound jump performance.
复制标题
三种下肢关节动力学的特征会影响反弹跳跃性能。
DOI：
10.1371/journal.pone.0268339
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发表时间：
2022
期刊：
影响因子：
3.7
通讯作者：
中科院分区：
文献类型：
--
作者：
采用RJ试验中的反弹跳指数（RJ-index）测定下肢拉伸-缩短周期（SSC）运动执行能力；这种表现受到下肢三个关节施加的力的相互作用的影响。我们的目的是确定RJ性能变量，并确定影响它们的下肢动力学变量。对102名女大学生（年龄20.1±1.0岁，身高164.6±7.2 cm，体重58.9±7.3 kg）进行了RJ性能指标（RJ指数、跳跃高度、接触时间）和关节动力学指标（扭矩、功率、功）的测量。统计分析结果显示，rj指数与跳跃高度、接触时间呈较强相关性（r = 0.920, -0.726, p < 0.05），与跳跃高度、接触时间呈较弱相关性（r = -0.384, p < 0.05）。此外，正踝关节力量是影响RJ表现变量的最重要因素；此外，正膝功、髋功和偏心膝扭矩显著影响跳跃高度，正踝功、负膝功、髋功和同心圆扭矩显著影响接触时间。获取跳跃高度和较短的接触时间需要不同的动力学变量。此外，即使RJ-index值相同，构成RJ-index的下肢三个关节所施加的力的特征也可能不同。因此，通过在RJ测试中不仅评估RJ指数，还评估跳跃高度、接触时间、下肢关节动力学特征，可以根据个体特点进行有效的训练，提高下肢SSC运动执行性能。
The stretch-shortening cycle (SSC) motor execution ability of the lower limb was measured using the rebound jump index (RJ-index) in RJ test; this performance is influenced by the interaction of the forces exerted by the three joints of the lower limb.We aimed to determine RJ performance variables and identify the lower limb kinetic variables that affect them. One hundred two female university students (age, 20.1±1.0 years; height, 164.6±7.2 cm; mass, 58.9±7.3 kg) for whom RJ performance variables (RJ-index, jump height, and contact time) and joint kinetics (torque, power, and work) were measured. Statistical analysis showed a strong correlation between the RJ-index and jump height or contact time (r = 0.920, -0.726, p < 0.05) but a weak correlation between the jump height and contact time (r = -0.384, p < 0.05). Furthermore, positive ankle power was the most influential factor for RJ performance variables; additionally, positive knee power and hip work and eccentric knee torque significantly influenced jump height, and positive ankle power, negative work and power, and concentric torque significantly influenced the contact time. The acquisition of the jump height and a shorter contact time requires different kinetic variables. Furthermore, the characteristics of the force exerted by the three joints of the lower limb that compose the RJ-index may be different even if the RJ-index has the same value. Therefore, by assessing not only the RJ-index but also the jump height, contact time, and characteristics of lower limb joint kinetics in the RJ test, it is possible to conduct effective training to improve lower limb SSC motor execution performance according to individual characteristics.
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DOI：
10.1519/jsc.0b013e3182510870
发表时间：
2012-05-01
影响因子：
3.2
作者：
Ball, Nick B.;Zanetti, Sara
通讯作者：
Zanetti, Sara
影响因子：
2.5
作者：
Young, WB;Wilson, GJ;Byrne, C
通讯作者：
Byrne, C
DOI：
10.1519/jsc.0000000000001534
发表时间：
2017-03-01
影响因子：
3.2
作者：
Byrne, Damien J.;Browne, Declan T.;Richardson, Noel
通讯作者：
Richardson, Noel
影响因子：
2.5
作者：
Pedley, Jason S.;Lloyd, Rhodri S.;Oliver, Jon L.
通讯作者：
Oliver, Jon L.
影响因子：
3
作者：
Horita, T;Komi, PV;Kyröläinen, H
通讯作者：
Kyröläinen, H