| Kickball technique is the most basic but complicated action technique in football projects.Because the swing leg is composed of a series of kicking movements,such as rear swing,front swing and so on,more importantly,the hip joint and knee joint in the process.The function of the ankle is different from that of the other kicks and plays a certain technical role,which makes the swing of the wobble leg different from that of the other events.Their movement is not only a part of the kick leg thigh or calf movement,but also has its own special role.Therefore,in order to improve the special technical level of football players,it is not only necessary to simply use match observation and technical data processing to explore the ways and methods of development.It is also necessary to use the special influence and software analysis equipment to restore the athletes' technical actions and evaluate them accurately.The purpose of this study was to find out the similarity and difference of the technique of kicking and swinging leg in the medial foot of students at different levels of physical education.Thus,it can provide a data reference and theoretical reference for the improvement and development of football teaching methods for the students of physical education colleges and departments in our country,and contribute a meagre contribution to the improvement of the football level and the educational cause of our young people.In this paper,8 Vicon 3D infrared high speed cameras are used to record the whole process of the inside kick technique of the athlete's foot,and to complete the inside kick technique of the foot with maximum strength.In this paper,the shooting method of stereoscopic fixed focus synchronous shooting is adopted,each kick is 3 times,the football must be kicked into the designated door frame which is 7 m away from the door frame,and the experiment result is the best one time.The kinematics test used Vicon 3D motion capture system and Plug-in Gait model built in Vicon Nexus software to collect the lower extremity kinematics data.According to the experiment,the subjects according to body joint distribution,Maker adhesive joints in the lower limb of the human body,a total of 16 points(LASI,RASI,LPSI,RPSI,LTHI,RTHI,LKNE,RKNE,LTIB,RTIB,LANK,RANK,LHEE,RHEE,LTOE,RTOE),based on the data the arrangement,calculate the kinematic parameters of joint marker data points to the joint.The results of the study are as follows:(1)There was no significant difference in the kinematic characteristics of the swing legs between the students in the specialized group and the general group in the technique of kicking on the medial side of the foot.(2)Students in the high level group were shorter than those in the physical education group in the front and back swing time of kicking and swinging leg on the medial side of the foot.(3)The students in the high level group were obviously larger than the students in the physical education group in the swing amplitude of the swing leg.(4)In the high level group,the maximum rear pendulum angular velocity of the thigh,the maximum rear pendulum angular velocity of the lower leg,the maximum forward pendulum angular velocity of the lower leg and the knee joint angular velocity were all larger than those of the physical education group.(5)The acceleration ability of the high level group in the leg swing acceleration is better than the students in the body teaching group on the acceleration ability of the vertical motion track of the swing leg on the inside of the foot.(6)The angle of thigh,angle of calf and angular velocity of leg in high level group were obviously better than those in physical education group.The angle of the leg angle,the angular velocity of the leg angle and the angular velocity of the leg angle in front of kick leg were also better than those in the physical education group.However,there was no significant difference in the angular velocity of the front and rear thighs between the students of the same teaching group. |
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