Developmental movement of standing long jump in elementary schoolchildren by Kinematics Analysis Zhouye Chen, Yoshimasa Ishii, Yun Wang, and Kazuhiko Watanabe Health and Sports Sciences, Graduate school of Education, Hiroshima University Standing long jump is one of the Japanese fitness tests in elementary school and this performance has been deteriorating since twenty years before. Improvement of the fitness of children is under discussion among sports coaches and teachers now. To study the developmental movement of standing long jump in elementary school children by kinematic analysis. One hundred twenty eight male school children (6-11yrs) and eleven male adults (29.2±5.8 years, 172.9±4.7 cm, 70.6±6.6 kg) were participated in this study. Subjects performed standing long jump as far as possible, and the distance of jump was measured. And the motion of standing long jump was monitored and analyzed using a 2-D video analysis system. During the back-swing of upper limp, the angle of full extension of shoulder joint increased (p < 0.05). During the bending-down of lower limp, the angles of full flexion of the hip and knee joints decreased from the 1st-3rd grade children (6-8 years old) (p < 0.05), but no significant differences were observed between the 3rd- 6th grade children (8-11 years old). The time-point of full extension of shoulder joint occurs before the full flexion of hip joint in the 1 st-5th grade children, however these time-points were observed almost in the same time in both the 6th grade children and adults. Performance was significantly related to the parameters in shoulder joint (full extension angle: r = 0.41; full flexion angle: r = 0.31; range motion: r = 0.43; p < 0.05). No significant differences were found between the 6th grade children and adults in all parameters. Our study suggested the motion of the arms is very important for the standing long jump in elementary school children. In the 3rd grade, the motion of standing long jump seems to be almost matured, and there is no significant difference between the 6th grade children and the adults. Depending on age, we should know these characteristics of developmental movement and advice to improve the performance of standing long jump concretely. The results of this study could be taken into consideration when training the standing long jump in elementary school children.