The Effects of Ankle Restriction on the Multijoint Coordination of Vertical Jumping
The Effects of Ankle Restriction on the Multijoint Coordination of Vertical Jumping
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DOI：
10.1123/jab.29.4.468
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发表时间：
2013-08-01
影响因子：
1.4
通讯作者：
Kanehisa, Hiroaki
中科院分区：
文献类型：
--
作者：
Arakawa, Hiroshi;Nagano, Akinori;Kanehisa, Hiroaki
本研究旨在探讨踝关节限制对纵跳协调性的影响，以及踝关节能量传递的影响。腓肠肌的多关节运动。八名参与者进行了两种类型的垂直跳跃：一个正常的蹲跳，蹲跳与限制踝关节运动。使用逆动力学分析计算机械输出。使用定制鞋限制跖屈，导致踝关节的最大功率和功显著（P <0.001）降低至2%和3%以下，同时保持髋关节和膝关节的自然活动范围。基于两种跳跃方式的比较，我们确定踝关节限制增加了膝关节的功率（827 +/- 346 W vs. 1276 +/- 326 W）和功（92 +/- 34 J vs. 144 +/- 36 J）（P <0.001）。膝关节处的增强输出的大部分被假定是由于踝关节限制，这导致经由m的能量传输无效。腓肠肌;也就是说，踝关节限制的能量传递的贡献减少，表现为膝关节处的增强。
The current study aimed to investigate the effect of ankle restriction on the coordination of vertical jumping and discuss the influence of energy transfer through m. gastrocnemius on the multijoint movement. Eight participants performed two types of vertical jumps: a normal squat jump, and a squat jump with restricted ankle joint movement. Mechanical outputs were calculated using an inverse dynamics analysis. Custom-made shoes were used to restrict plantar flexion, resulting in significantly (P < .001) reduced maximum power and work at the ankle joint to below 2% and 3%, while maintaining natural range of motion at the hip and knee. Based on the comparison between the two types of jumps, we determined that the ankle restriction increased (P < .001) the power (827 +/- 346 W vs. 1276 +/- 326 W) and work (92 +/- 34 J vs. 144 +/- 36 J) at the knee joint. A large part of the enhanced output at the knee is assumed to be due to ankle restriction, which results in the nullification of energy transport via m. gastrocnemius; that is, reduced contribution of the energy transfer with ankle restriction appeared as augmentation at the knee joint.