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채원식 ( Woen Sik Chae ),강년주 ( Nyeon Ju Kang ),김종우 ( Jong Woo Kim ),윤창진 ( Chang Jin Yun ),채수덕 ( Su Duk Chae ),석창혁 ( Chang Huk Seok ),박기용 ( Gi Yong Park ),임영태 ( Young Tae Lim ) 한국운동역학회 2010 한국운동역학회지 Vol.20 No.1
The purpose of this study was to evaluate the kinematic effect of upper extremity usage for the scoccer instep kick motion. Ten male university students were recruited as the subjects. Temporal parameters, ball velocity, velocity of CG, angle of segment, angular velocity, and trunk orientation angle were determined for each trial. The results showed that temporal parameters in WU and WORU were significantly less than those found in WOU during pre impact phase. These indicated that no usage of upper extremity may increase excessive setup time in order to improve the accuracy of instep kick. Angle of right knee in WOU at LC was significantly greater than corresponding value for WU since angular momentum contributions of the lower limb were not effectively balanced by contributions of the upper limb. We found that the lower extremity movement was controlled by lateral movement in the trunk as a result of no usage of the upper extremity, resulting in the relatively greater trunk rotation in WOU.