Kinematical Analysis On The Game Of Maoya 's Attraction

Research Question:Literature review indicates that there has not been comprehensive kinematic analysis of catching and serving skills both in our country and abroad even if these skills are critical to winning a match. Kinetic techniques models of the top athletes in the world quite valuable for such research and should be taken as in accordance to biomechanics principles. As a result, a probing into the catching and serving skills of Mo Ya, the2011Chengdu Tournament Champaign should shed some light tennis skills and techniques both in theory and in practiceMethods:Three-dimensional video-aided analysis is adopted. The2011Chengdu Tournament Championship was recorded and data on Mo Ya’s catching and serving have been analyzed. Related literature and official data of the four major tennis championships in2011have been used in the research.Results:1.61.06%of Mo Ya’s catching and serving belongs to forehand drive, in accordance with related literature and official data for the four championships in2011;2. Three-dimensional Kinematic Analysis of Mo Ya’s successful forehand drive indicated his characteristics and the part in line with biomechanics principles has been used to build up kinematic models.Conclusion:1. Jumping:Mo Ya’s starting shows an incomplete extension of pelvis and knee angles. Such jumping cannot make full of muscle groups of lower parts. Mo Ya’s models:jumping time0.08s, height of weight center when both feet touching the ground0.985, angle for the eaft pelvis144.0and right one143.5, left knee joint angle142.8, right knee joint angle161.32. Backswing:Mo Ya could draw backswing perfectly, with total twist of the body and previous extension major muscular groups, all in accordance with biomechanics principles. Mo Ya’s technique models:at the end of backswing, left and right shoulder angles are20.4and19.7respectively, left and right elbow angles are80.9and91.0respectively, left and right pelvis angles are154.9and150.6respectively, racket pole-forearm angle is75.1, the angle between shoulder and hip is34.6.3. Hitting:Mo Ya’s legs tramp and extend actively and prefer thorough twist of hip and shoulder. Hitting is in accordance with biomechanics principles. Mo Ya’s techniques models in this phase:at the end of backswing, the angle between hip and shoulder is34.6, when hitting, it is7.4, with a swing range of27.2within0.12s. Vmax for shoulder, elbow, hand, and head of the racket are respectively1.82,2.96,7.01and18.39m/s. At the moment of hitting, the time is-0.06,-0.04,-0.03and-0.02respectively.4. Follow-through:Mo Ya could control the twist and movement of the body in the follow-through phase to keep a good balance. The technique models:drawing the end of follow-through phase, the weight center of the body had speeds of Vx, Vy, and Vz as-0.81,-0.12and-0.01m/s, left and right shoulder angles are26.9and90.6, left and right elbow angles are70.0and77.0respectively.