This study investigated the biomechanical analysis of sprinting performance for preschool children. The subjects were 77 preschool children who aged 3 to 6. They were filmed in VTR picture during 25m sprinting, with a pole located every 5m. Using the VTR pictures, average speed; stride frequency; stride length between the start point and the marked distance point of each were calculated. The results obtained were as follows: 1 The sprinting velocity cause by height, and by stride length in

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... hool children. On the other hand, stride frequency is not related to height. 2 It was suggested that the sprinting velocity was greatly related to stride length and stride length ratio, and also weakly related to the stride frequency. 3 Times of 25m sprinting were decreased from 3 to 5 years for both boys and girls. 4 It was suggest that both boys and girls reached the highest for sprinting velocity in the 5-20m section, and the decrease in sprinting velocity decreased for the stride frequency after 10m and for the stride length after 15m