The Effect of Fastball Backspin Rate on Baseball Hitting Accuracy
The Effect of Fastball Backspin Rate on Baseball Hitting Accuracy
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DOI：
10.1123/jab.29.3.279
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发表时间：
2013-06-01
影响因子：
1.4
通讯作者：
Kanosue, Kazuyuki
中科院分区：
文献类型：
--
作者：
Higuchi, Takatoshi;Morohoshi, Jun;Kanosue, Kazuyuki
相同速度的快球的效果可能不同；例如，这种差异的一个因素可能是由于球旋转的速度和方向对发射球轨迹的影响。在本实验中，考察了棒球击球手在36m/S的恒定球速下，以不同的下旋速度击打快球的准确性。13名熟练的棒球运动员(专业、半专业和大学校队球员)参与了这项研究。使用两个同步的高速摄像机记录球棒和球的移动。计算了皮尔逊积-矩相关系数(R)，并用其分析了球棒撞击瞬间球的下旋率与球中心到甜蜜点的垂直距离之间的关系。球的下旋率与从挥杆的最佳接触点(甜蜜点)到实际接触点的距离的增加呈正相关(r=.38，P<；.001)。击球手在通常的下旋球速度下是最有效的。当快速球的下旋偏离通常的速度时，击球手挥杆的精确度可能会下降，这可能是因为有经验的击球手根据感知到的球速度预测球的轨迹。
The effectiveness of fastballs of equivalent speed can differ; for example, one element of this difference could be due to the effect of rate and orientation of ball spin on launched ball trajectory. In the present experiment, baseball batters' accuracy in hitting fastballs with different backspin rates at a constant ball velocity of 36 m/s was examined. Thirteen skilled baseball players (professionals, semiprofessionals, and college varsity players) participated in the study. The movements of bat and ball were recorded using two synchronized high-speed video cameras. The Pearson product-moment correlation coefficient (r) was calculated and used to analyze the relationship between ball backspin rate and the vertical distance between ball center and sweet spot at the moment of ball-bat impact. Ball backspin rate was positively correlated with increases in the distance from the optimal contact point of the swung bat (sweet spot) to the actual point of contact (r = .38, P < .001). Batters were most effective at the usual backspin rate for the ball velocity used. The decrease in accuracy of the batter's swing that was observed when the fastball's backspin deviated from the usual rate likely occurred because experienced batters predict ball trajectory from perceived ball speed.