出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：The aim of this study was to denote the differences in time and motion between exerts and amateurs at the point of starting their fieldings against batted balls. These experiments were intended to be a part of the research in responsive motions in ball games. Analyzing its 16mm films with "Strain Gauge," the conclusions were obtained as follows. 1) Expected in baseball seemed to judge the direction of a ball before da batter hits the ball. On the other hand, the inexpert were seen to adjust after the ball was hit. 2) In the starting motions of the experts, It was observed that the first few steps were short and smooth. But in the other case, the first few steps were much wide, and some markedly ineffective motions could be observed. 3) The defections of start by experts were versatile depending on the course and speed of the ball, but the inexpert could only move to the left or right in one direction.
其他摘要：The aim of this study was to denote the differences in time and motion between exerts and amateurs at the point of starting their fieldings against batted balls. These experiments were intended to be a part of the research in responsive motions in ball games. Analyzing its 16mm films with "Strain Gauge," the conclusions were obtained as follows. 1) Expected in baseball seemed to judge the direction of a ball before da batter hits the ball. On the other hand, the inexpert were seen to adjust after the ball was hit. 2) In the starting motions of the experts, It was observed that the first few steps were short and smooth. But in the other case, the first few steps were much wide, and some markedly ineffective motions could be observed. 3) The defections of start by experts were versatile depending on the course and speed of the ball, but the inexpert could only move to the left or right in one direction.
