Chase research about the skill acquired process in the jump movement from the kindergarten young term until the elementary school third age student

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The purpose of this study was to examine the skill acquired process in the jump movement. Data on a total six years from the kindergarten to the elementary school lower grades were chased in the same subjects. Kinematics data such as center of gravity, joint angle, joint angle velocity, and joint angle acceleration of each joint in lower limb were calculated by using Two-dimensional DLT methods for the standing broad jump. The index of the "skill" was the order of the flexion/extension of the lower limb joint. The "skill" in jumping movement was gotten from the youth grade to middle grade in the kindergarten periods. These results agreed in the pattern of development curve of Scammon, indicating the importance of the education, training in this period.