幼児の跳躍動作における運動伝導の評価

概要

論文の詳細を見る
The purpose of this study is to examine the "skill" from the point of view in motor conduction during jumping in infants. Subjects were 17 healthy infants (Younger group, n=11; Middle group, n=6). Five college students were participated in the this experiment as control group. Their forms during jumping were recorded by using a digital video camera. Angular displacement, angular velocity and angular acceleration were calculated for hip, knee and ankle joints. Jumping movements were divided to take-off phase and land-on phase based on the displacement of center of gravity. Correlation coefficient (CC) function was calculated for relation between the hip joint angular curve and knee joint angular curve to discuss the motor conduction. CC was also calculated for relation between the knee joint angular curve and ankle joint angular curve. Behavior of CC function in infants was similar to in controls during take-off phase. On the other hand, CC was smaller in infants than in controls during land-on phase. Furthermore, the variance of time lag in peak of CC was larger in infants than in controls, indicating the inability of motor conduction in infants during land-on phase.
東海大学の論文
2006-03-31