平均−最小二乗法による幼児の運動能力発達評価の妥当性

−男児の解析−

抄録

This study investigated motor ability development in preschool children. A least squares approximation polynomial was applied to mean motor ability development distance, and the validity of the motor ability development evaluation of preschool children was investigated. The subjects were 1,819 boys aged 3-6 years who took motor ability test consisting of six items：25-m run, standing long jump, ball throw, two-leg consecutive jump, body support time, and ball catching. A least squares approximation polynomial was applied to the mean motor ability growth distance values of the boys and the changes with age were investigated. A least squares approximation polynomial was also applied to the standard deviation for each age group, a regression polynomial evaluation chart was constructed, and its evaluation validity investigated. The following results were obtained. First, significant development was seen with age in all six items on the motor ability test：25-m run, standing long jump, ball throw, two-leg consecutive jump, ball catching, and body support time. Up to this time evaluation charts have been made for each age group and motor ability in each item scored. In this method of evaluating the total score, comparisons with evaluations in other age groups could not be done. With the evaluation chart constructed in this study, however, it is possible to make evaluations even while simultaneously comparing between different ages in the preschool years. Therefore, it is suggested that the changes with age in motor development can be more objectively identified by constructing evaluations that consider age change composition in early childhood motor ability development with the use of least squares approximation polynomials. This may provide greater objectivity than with conventional evaluation methods in evaluating motor ability development in children.