A topspin rate exceeding 110 rps reduces the ball time of arrival to the opponent: a table tennis rally study
A topspin rate exceeding 110 rps reduces the ball time of arrival to the opponent: a table tennis rally study
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DOI：
10.1080/14763141.2022.2156916
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发表时间：
2022-12-19
影响因子：
2.2
通讯作者：
Ozaki，Hiroki
中科院分区：
文献类型：
--
作者：
Kidokoro，Shuji;Inaba，Yuki;Ozaki，Hiroki
本研究通过实验研究了影响上旋球到达对手所需时间的因素。在3台高速摄像机的观察下，6名技术娴熟的年轻选手和1名教练进行了上旋球正手击球。由于参与者的测量分布是不均匀的，因此使用可以控制球速度和旋转的发射机收集了额外的数据。为了验证自旋速率对阻力引起的速度衰减的影响，在通过基线（23 m/s）后0.15 s测量平移速度；上旋度≥110 rps的球比上旋度≤80 rps的球快1.4 m/s，接近参与者的平均水平（117±29 rps）。由于球台的弹跳，水平球的速度变化范围在−3.1 ~ 2.6 m/s之间。在初始速度相同的情况下，上旋球≥110转/秒时，球到达终点线（估计接球位置）1米处的速度比上旋球≤80转/秒时快27±5毫秒。自旋速率与行程时间呈非线性关系，边界为80和110 rps。因此，保持≥110 rps的旋转速率和较高的初始速度是减少对手准备时间的有效策略。
This study experimentally investigated the factors affecting the time a table tennis ball with topspin takes to reach the opponent. Six skilled young players and one coach performed topspin forehand strokes under the observation of three high-speed cameras. As the distribution of the participants’ measurements was uneven, additional data were collected using a launching machine that could control the ball speed and spin. To verify the effect of the spin rate on speed decay by drag, the translational speed was measured at 0.15 s after passing the baseline (23 m/s); the balls with topspin ≥110 rps, close to participants’ average (117 ± 29 rps) were 1.4 m/s faster than those with topspin ≤80 rps. The horizontal ball speed changed in the range of −3.1 to 2.6 m/s owing to table bounce. At topspins ≥110 rps the ball reached a point 1 m past the end line (estimated receiving position) 27 ± 5 ms faster than at topspins ≤80 rps, for the same initial speed. The relationship between spin rate and travel time was non-linear with boundaries at 80 and 110 rps. Therefore, maintaining a spin rate of ≥ 110 rps along with a high initial speed is an effective strategy for reducing the opponent’s preparation time.