The Analysis Of Kinematics For Unprofessional Badminton Player Hitting The Backcourt Lofty Backhand Ball Technology

Objective: Through the non-professional badminton players backcourt backhand strike lofty ball technical movement kinematics analysis was carried out, we conclude that technology of quantitative data and analysis to discover non-professional players of this technology common problem, analyze the crux, make its overcome the difficulties of use this technology, master the scientific reasonable behavioral essentials, prevent sports injury.Methods: This paper adopts two the same specifications SONY1080i camera, filming frequency 50HZ, a home video frequency, shooting, 25HZ subjects for Beijing badminton team three, capital sports institute badminton professional six men's singles player (all right hand hold clap) simulation match process, selecting the best athletes think hitting action for one research action videos, finish on technical movements, 3-d analytical kinematic analysis.Results:1.Mobile take a last minute non-professional players shoulder and elbow,wrist angle respectively 60.111°,101.054°,155.563°, right knee Angle 140.686°,and left knee angle 158.797°。2. Racket closing non-professional athletes right hip, shoulder and elbow Angle respectively 132.097 mean for 86.212°,100.636°, shoulder hip is increasing torsional Angle - reduce - increasing process, and reverse Angle than professional athlete, Lower limbs right, left knee 143.609°Angle respectively with 133.378°, Hit rhythm accord with by arrive slow fast by long to short rules.3. Swing, swing non-professional players ball stage time 0.12 s, swing, swing distance0.88m;, The right upper each link maximum speed order of appearance for hip -- cubits shoulder wrist finger-nails - the racket, this activity sequence conform to flog principle; Non-professional players in hitting time around the racquet at vertical speed and direction, respectively 19.358 m/s X, Y direction - 1.917 m/s, maximum speed appears to hit close moments in the process.4. The ball hitting time non-professional players than for 0.0071 height and height, shot moment right genu, hip and shoulder and elbow Angle 167.843°, respectively 156.432°, 166.114°, 125.338°, left knee, hip Angle 141.841°, respectively 158.481°.Conclusion: 1. Mobile take a stage the height of the non-professional players elbow lift taller, wrist slightly nervous, gravity is not quite stable.2. Racket stage non-professional players racket last moments elbow slightly open, have apparent backward swivel action, force is not very concentrated, Racket last moments knee Angle to force too large, stirrup decreases. 3. Swing phase non-professional players ball send force process conform to flog principle, but in the sphere operation on the direction of power loss is bigger; Lower limbs knee too large, large Angle of gravity ups and downs, unfavorable to a corner.4 shots hit points higher moments non-professional athletes, body stretching is good.