| 英文摘要 |
Introduction: The table tennis forehand drive is a fast interceptive action that plays an important role of attacking-to-score in table tennis games. For an effective scoring forehand drive, the speed of the driving movement becomes the most important factor. The timing performance may be affected when the player adjusts the temporal-spatial characteristics of the movement to change the driving speed. In addition, performing under multi-ball or rally drill practice conditions may also play an effective factor on timing performance. For table tennis training, the rally drill is closer to the game situation while the multi-ball drill provides repetitive practice opportunity where the coach uses large number of balls for the player to practice. The study was to examine the movement outcome, movement performance, and the timing performance of the table tennis forehand drive under different practice conditions and difference driving speeds. Methods: Eight male collegiate division B table tennis players participated in this study. Two high-speed cameras (200fps) and the Known 3D motion digitizing system were used to capture the ball/racket kinematic data. Ten strokes were analyzed in each of the three conditions and compared with different driving speeds and different practice conditions using the paired t test. Results: The driving speed had significant effect on the forehand driving speed and movement time but not on the timing performance and the success rate. For the practice conditions, the participants showed significant differences on the driving speed, the movement displacement, the success rate, and timing variability. Conclusions: The success rate and timing performance were not influenced by the increased driving speed, indicating that the athletes were able to perform forehand drive successfully even though the temporal-spatial parameter of the movement were adjusted. The rally practice is similar to the game situation. The players responded to the variable shots in the rally drill condition by reducing the movement displacement and the driving speed that affected the movement timing performance and the success rate. Future study will continue to examine the timing performance of table tennis forehand drive in different practice conditions and different levels of athletes. |
