Intensity-level assessment of lower body plyometric exercises based on mechanical output of lower limb joints
Intensity-level assessment of lower body plyometric exercises based on mechanical output of lower limb joints
复制标题
基于下肢关节机械输出的下半身增强式训练的强度水平评估
DOI：
10.1080/02640414.2012.757342
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发表时间：
2013
影响因子：
3.4
通讯作者：
Kanehisa H
中科院分区：
文献类型：
--
作者：
Sugisaki N;Okada J;Kanehisa H
本研究旨在通过测定关节机械输出量来量化腿部多测性运动的强度。10名男子(年龄27.3±54.1岁；身高173.6±540厘米；体重69.4±66.0公斤；后蹲1次最大负荷118.5±112.0公斤)进行了以下7种多体测量练习：两英尺脚踝跳跃，重复深蹲，双腿跳跃，30和60厘米深度跳跃，以及单腿和双腿内翻跳跃。通过逆动力学分析确定了下肢关节的机械输出变量(扭矩、角冲量、功率和功)。在所有测量变量中，方差分析显示运动类型对所有关节的主效应显著(P<；P；0.05)以及关节与运动之间的显著交互作用(P<；0.01)，表明运动类型对机械输出的影响因关节而异。配对比较显示，踝关节和髋关节的机械输出存在显著差异；踝关节的大多数变量在两英尺的踝部跳跃和内翻跳跃中最大，而大多数髋关节变量在重复深蹲跳跃或双腿跳跃时最大。目前的结果表明，在评估多测性运动的强度时，有必要确定每个关节的机械输出。
The present study aimed to quantify the intensity of lower extremity plyometric exercises by determining joint mechanical output. Ten men (age, 27.3 ± 4.1 years; height, 173.6 ± 5.4 cm; weight, 69.4 ± 6.0 kg; 1-repetition maximum [1RM] load in back squat 118.5 ± 12.0 kg) performed the following seven plyometric exercises: two-foot ankle hop, repeated squat jump, double-leg hop, depth jumps from 30 and 60 cm, and single-leg and double-leg tuck jumps. Mechanical output variables (torque, angular impulse, power, and work) at the lower limb joints were determined using inverse-dynamics analysis. For all measured variables, ANOVA revealed significant main effects of exercise type for all joints (P< 0.05) along with significant interactions between joint and exercise (P< 0.01), indicating that the influence of exercise type on mechanical output varied among joints. Paired comparisons revealed that there were marked differences in mechanical output at the ankle and hip joints; most of the variables at the ankle joint were greatest for two-foot ankle hop and tuck jumps, while most hip joint variables were greatest for repeated squat jump or double-leg hop. The present results indicate the necessity for determining mechanical output for each joint when evaluating the intensity of plyometric exercises.