The Kinematics Research On Forehand Loop Dirve Of Table Tennis Players In The Inorganic Era

Table Tennis is skill-dominant competition sports event, any change in its regulations orequipments would possibly cause change in the whole technical system. In recent years withthe purposes of promoting its engagement, improving its entertainment, facilitating the livebroadcasting of the match etc, the International Table Tennis Federation has beenimplementing series of changes in its regulations such as Big Ball’s Use, Non-hiding Service,11Points Recording Points etc. each of such changes has significantly influenced thetechnical reform of table tennis. However after the Olympics of2008, The International TableTennis Federation has made the new regulation upon the equipment: no organic glue rackets,only inorganic glue rackets can be used in the match. With the different chemicalcharacteristics, the inorganic glue rackets is less flexible compared with the organic ones andafter the athletes set the ball, there will be wind age of release speed and the loop drive. Thusall the athletes, coaches and scientists have to learn to adapt to such new change.Table Tennis has been the advantage project in Chinese competitive sports. In order tohelp athletes to adapt inorganic glue racket and reduce the affection of racket flexibility toTable Tennis technique, the author, on the base of previous study on the Table Tennistechnique biomechanics, used the method of kinematics three-dimensional camera to comparethe same athlete’s action and technique change by using inorganic glue racket and organicglue racket.At last, the author made the kinematics feature of Table Tennis technique by usinginorganic glue racket clear. This research will be benefit for the future Table Tennis training.In the technology of table tennis, the forehand loop drive is the main core skill for scoring. Consequently, the author selected nine table tennis players as the research object, and did the contrast analysis respectively on using two rackets for forehand loop drive in order to obtain thekinematics features of forehand loop drive in choosing inorganic glue. Moreover, based on the above analysis, the author listed a number of suggestions on forehand loop drive in the cont-emporary inorganic era, and finally came to the following conclusions:(1)With the change only of the rackets, and the other conditions remain unchanged,when the athlete is playing forehand loop drive, the timing and routine is exactly the same ofthe whole process, there is no difference. And the posture of the body, the highest-speed of each joints of the body, and the Kinematics index of each part of the body either shows anydifference. So with the beginning implement of the inorganic glue rackets, the athletes remainthe same skills as they were using the organic glue rackets when they are playing forehandloop drive.(2)When the athletes are doing the forehand loop drive, the highest speed of theracket when the it is touching the ball is not actually the highest speed when it is flicking, nomatter the inorganic glue rackets is used or the organic glue ones. The highest speed offlicking the rackets comes either earlier or later when it is touching the ball, and most of thetime it comes later. Whether it comes earlier of later, the time gap is quite narrow, between0.02s to0.04s on average.(3) The highest speed of touching the ball is quicker when theathlete is using the organic glue rackets than he is using the inorganic glue rackets.(4) Whenthe athletes are doing the forehand loop drive, with the organic glue rackets and the inorganicglue rackets, the flying arc height and the time of the ball also differs to each other.