B34 Movement of Sprint Running on Curve in Elementary School Children

Abstract

The purpose of this study was to clarify characteristics of movement of sprint running on curve in elementary school children. 30 fifth or sixth grade children in elementary school participated in this study and they performed 50m sprint on curve (R=12.5m) and straight tracks. Children were divided into high-level group (n=10) and low-level group (n=10) based on 50m sprint time on straight track in this study. Children's sprint form on each track was filmed by two video cameras and high and low-level group children (n=20) was analyzed by the three-dimensional direct linear transformation (DLT) method. Results were as follows: 1) Elementary school children did proper inclination movement of their body according to their sprint ability and centrifugal force which affected the center of gravity when they sprinted on curve tracks. 2) In high-level group sprint on curve track, it is considered that left leg has a role which obtains propulsion and right leg has a role which resists the centrifugal force of the center of gravity. 3) It is considered that use of left leg which has a role of obtaining propulsion is concerned with cornering skill, and children who had superior cornering skill sprinted on curve track with a range of direction change during left foot contact and flight phase small.