A21 投球コースの違いがバットスイングに及ぼす影響(野球)

概要

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The present study investigated the effects of pitch trajectory on batting swing. Balls of various trajectories were pitched to a professional baseball player and his batting motion was analyzed by the three-dimensional direct linear transformation (DLT) method. Acceleration applied to the bat during the swing was measured by installed accelerometers. Results were as follows: 1) Pitched balls with an inside trajectory had an impact point closer to the pitcher, while balls pitched with an outside trajectory had an impact point closer to the catcher. 2) Although the position of the bat at the point of impact changed for different pitch trajectories, there were no significant differences in the position of the waist or shoulder. The motion of the body during the batting swing, excepting the arms, was not affected by differences in pitch trajectory. 3) Ball pitched to waist height were hit with a higher bat head speed, resulting in a greater post-impact flight distance. 4) Batters appeared to adjust their batting swing to the pitch trajectory just prior to impact.
一般社団法人日本機械学会の論文
2007-11-13