earticle

영어

The purpose of this study was to examine the characteristics of kicking motion in the elementary school students from the developmental point of view. For the purpose of this, total of nine subjects(each of three students in fifth, third, and first grades) were participated. They were asked to kick the ball as strong as they could and the motions were videotaped with the 30frames/sec and 1/500 shutter speed. The successful motions for each subject were selected for three dimensional analysis. The collected data were analyzed using DV express 1.0 Kwon3D 3.0 and Excel softwares. The results obtained from this study were as follows; 1. Total time for the kicking motion of the first grade was longer than that of the fifth and third grades. There was a little difference in getting to the impact time. 2. The resultant displacement and velocity of COM for the fifth and third grades were greater than that of the frist grade. 3. The first grade tended to have a limited movement of the lower leg compared to the third and fifth grades. 4. Looking at the greater variability of the angular velocity of the hand segment, the fifth grade seemed to have faster and more flexible movement of the ankle joint.