Applicaton Of Dartfish Software In The Diganosis Of Badmintion Singles Teaching Technology

Technology is one of the core influencing factors of badminton players' athletic ability,and it is also an effective way to improve sports performance.It has a large proportion in teaching and training.High-altitude technology is the basis of back-field technology,and other back-field techniques are based on the extension of high-altitude technology.The diagnosis,evaluation and control of the technical action of the high-altitude ball in the back field is an important part of the teaching and training.This research mainly uses the literature data method,the expert interview method,the video analysis method,the case analysis method and the mathematical statistics method.The high-altitude ball technology is the research object.The effective high-altitude shots of the 2015,2016 and 2017 badminton special students are taken as the research samples.The 8 students of the 6th class of the 2018 education college are used as technical diagnostic objects to discuss the backcourt.The focus of the technical diagnosis of the high ground ball and the following conclusions: (1)According to the relationship between the various indicators of the slap-and-shoot stage and the stroke hitting stage and the hitting effect,a key indicator system for the technical diagnosis of the forehand high-ball in the back field is established.The tempo stage includes four indicators: head height,head distance,shoulder joint angle and ankle angle.The swing stroke stage includes swing distance,hitting point height,front and rear position of the hitting point,left and right distance of the hitting point,7 indicators such as the angle of the beat,the angle of the wrist joint,and the angle of the elbow joint.(2)Using the mean modeling method and the scoring evaluation method,the technical model of the back field in-situ high-altitude ball and the back field in-situ high-ball technical action score evaluation table were established.In the practice of teaching and training of badminton,according to the actual needs,the coach can calculate the scores of each individual indicator of each student's forehand high-ball skills in the backcourt,and can calculate the total score of each indicator to facilitate the coach.From a variety of angles,the staff grasps the performance characteristics of the students' forehand high-ball skills in the backcourt.(3)Technical diagnosis was made for the students in class 6 of physical education of grade 2018.At the stage of racquet introduction,the proportion of the number of students with differences in the key indicators of racquet head height,racquet head distance,shoulder joint Angle,ankle joint Angle and model parameters was 62.5%,62.5%,25% and 50%,respectively.In the swing stage,the proportion of the key indicators with significant differences in the swing distance,the swing Angle,the wrist Angle at the swing time and the model parameters is 37.5%,25% and 50%,respectively.The proportion of the people with significant differences in the height of the hitting point,the distance between the hitting point and the elbow Angle at the stroke and the model is 12.5%.The proportion of those whose technical scores reached more than 60% of the model in the lead shot stage was 12.5%,and the proportion of those whose technical scores reached more than 60% of the model in the swing shot stage was 25%.(4)According to the technical diagnosis results,in the lead stage,the existing problem is that the loop lead action is not coordinated,which reduces the working distance of the swing shot;In the swing hitting stage,the problem is that the swing distance is short,the swing speed is reduced,the position of the hit point is unreasonable,and the shot angle is unreasonable when hitting the ball.(5)The Dartfish software is applied to the teaching of dart technology,which improves the teaching effect and efficiency.Ren,li and Chen's hitting effect was improved obviously,and the technical problems in the initial state diagnosis were improved.Zhou and zhou Ming's total technical score decreased somewhat,but the batting effect was good,and the existing technical problems were basically improved,which was caused by the great changes in the key technical indicators.Cui and wang's batting effect was poor,and the key technical index did not change.Deng's total technical score has increased,but the effect of the stroke has not improved significantly,because the key technical indicators have changed little.