Kinematics Analysis Of The Technical Characteristics Of The Athletes Of The Women's Walking Team Of Shaanxi National Gemes In 2017

The purpose of this study is to make quantitative analysis of the uptake parameters by means of motion biomechanics,and to analyze the technical status of the athletes in Shaanxi women ' s bidding group by means of motion biomechanics,and to provide scientific basis for the improvement and correction of technical training.Methods: the kinematics parameters were collected by means of high speed camera,and the kinematics indexes such as the time of flight,the angle of knee flexion,step size,step frequency and single step velocity were screened out,and the corresponding results were obtained by analyzing the kinematics parameters of flight time,knee flexion angle,step size,step frequency and single step speed.Research content:1.Analysis of the empty condition of the athletes in the adult and youth groups2.Analysis of kinematics indexes for judging punishment of leg flexion3.Analysis of the indicators that affect the performance of sports Results and analysis of stride length and step frequency of young athletes Results and analysis of step size and step frequency of adult athletes4.Analysis of knee flexion angle and ankle and ground height in vertical stage of bracing5.An Analysis of the average Velocity of stagesResults of the study:1.Through the analysis of the empty index of Shaanxi women's walking adult group,it is shown that regardless of the influence of the length of the race,the common characteristics of the athletes in the time limit of the air race are: In the first half of the course,it shows that the fluctuation range of the body in different degrees is large,the athletes are prone to appear the phenomenon of approaching or even exceeding the threshold of the empty in the air,and they are in the critical period of being punished;the latter half and the sprint stage,The majority of athletes in the body to control the air smooth,the body empty value is almost all controlled in a reasonable range,greatly reduced the possibility of punishment in the issue of air evacuation.2.Most of the data of the elevation angle of the foot in the adult group are above 24 °,which shows that the technique of landing is very standard,although the value of the angle of elevation of the feet of the young group is not as good as that of the adult group,there is hardly less than 20 °.On the premise that the angle of elevation angle of segment distance is more balanced,it also shows a general trend: with the progress of the match schedule,the elevation angle of the foot's soles increases at the moment of landing,which indicates that the technical link tends to be more reasonable.3.The knee joint angle of the adult group and the young group is close to 180 °,which shows that the knee joint of the athlete keeps straight and meets the requirement of the technical action stipulated by the rules of race walking.4,among the adult athletes,Ni Yuanyuan,Gao Nie's step index is more ideal,and the difference between the other athletes is great.The technical index of the youth group in the course of the competition,the step length and the step frequency of the two aspects are in the process of gradual improvement,in the transition stage of fast adaptation to the high intensity movement;the technical index of the two aspects of the distance and the step frequency.The overall increase has shown that the functions of the body have been adapted to meet the requirements of special physical fitness in the extreme conditions.5.In adult group,the knee joint angle of swing leg and the height of ankle joint from the ground show a good situation in vertical support stage,that is to say,the knee joint angle and the lower ankle joint height reach to close to the ground with the larger knee joint angle and the lower ankle joint height.The technical requirements of smooth forward;the parameters of young athletes in this area indicate that there is a large room for promotion.6.The speed curves of adult athletes Gao Ni and Ni Yuanyuan generally show a trend of increasing slowly,which conforms to the basic law of the speed change of the 20 km race walking project.Ni Yuanyuan managed the change of speed rhythm with great success.After 10 kilometers of success,the average speed value rose with minimal fluctuation,and young athletes,when analyzed from the perspective of the characteristics of average speed changes,were basically able to base on their own physical and special abilities.Relatively reasonable control of the pace in the course of the change in rhythm.