Tennis Forehand Break, Loop Biomechanics Research And Footwork Pad Test System Developed And Experimental

Table Tennis is a preponderant sport and important Olympic sport in China. The attack and loop drive techniques of the positive hand are most important among all the techniques. Table Tennis footwork has an important effect on the result of the match. It has an important significance for us to research on the attack, loop drive and footwork of table tennis techniques, in keeping ahead and developing Chinese Olympic stratagem.10 excellent ping-pong athletes'attack and loop drive techniques of the positive hand were tested, using the measurement methods of the QUALISYS kinematics measurements system and the KISTLER force-plate system. Each technique was performed by two tpes of force, the middle strength and the full strength. A set of table tennis footwork mat test system was succeeded to be produced. The table tennis athlete's footwork of one player in match was tested by using the table tennis footwork mat test system. The main conclusions were followings:(1) Racket's touching a ball was not at the moment the biggest speed of flicking racket. Moreover, it was mostly after the biggest speed of flicking racket.(2)At the leading and flicking racket stage, the sequence of the biggest speed on each joint of arms was not the same. In addition, the difference among techniques, individuals was rather big.(3)The difference of force characters between the attack and loop drive technique was that the ground reaction force (GRF) of loop drive technique was bigger than attack technique in perpendicular and level direction, which suggested that the fore in perpendicular and level direction should be strengthened when performing loop drive technique.(4)The difference of force characters between the two force methods of performing attack technique was that the GRFof full strength was bigger than middle strength in perpendicular and frontal direction, which suggested that the fore in perpendicular and level frontal should be strengthened when performing the attack technique of the full strength.(5) The difference of force characters between the two force methods of performing loop drive technique was that the GRFof full strength was bigger than the middle strength in three directions, which suggested that the fore should be added when performing the loop drive technique of the full strength.(6) The table tennis footwork mat test system could be used to test the footwork in table tennis match. The kinematic parameters of the footwork could be acquired, including the time index of footwork (the stand and empty timeof two feet, and single foot, the number of stand and empty), the space index (the scope, range of the footwork ambulation), and the index of the speed and frequency of footwork ambulation, etc.