Motor Control Mechanism of Soccer Ball Juggling Depending on Skill Level

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  • 熟練度の違いによるサッカーボールリフティングの運動制御機構
  • ジュクレンド ノ チガイ ニ ヨル サッカーボールリフティング ノ ウンドウ セイギョ キコウ

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Abstract

The purpose of this study was to examine a person experienced soccer and inexperienced soccer perform ball juggling, to compare the movement of the operating leg and electromyogram (EMG) data according to the skill level, and clarify the characteristics of motor control. EMG was recorded from the knee and ankle joint flexors and extensors, and co-contraction index (CCI) was calculated from the obtained data. The movement period when the Ball touched the foot was divided into the touch and kick phase with the moment when the ball was at the lowest position. The result were followed. The amount of muscle activity was smaller the skilled group than the unskilled group. In the Touch phase of the knee joint, the CCI was higher the skilled group than the unskilled group. However, in the Kick phase of the ankle joint, the CCI was lower skilled group than the unskilled group. We concluded that there were differences in the method of motor controlling ball juggling due to differences in skill level. The skilled group fixes the knee joint and performs ball juggling at the ankle joint. On the other hand, the unskilled group fixes the ankle joint and performs ball juggling at the knee joint.

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