A Comparative Study On The Achievements Of Chinese And Foreign Men's Freestyle Skiing Aerial Skills At The Winter Olympics

In freestyle skiing aerial skills competition,the points of movement difficulty,flight and aerial movement,landing movement are the embodiment of athletes' competitive ability,and they are also the important factors for referees to score,which play a vital role in the competition results.In order to enrich the theory of Freestyle Skiing Aerials in China,improve the level of sports training and improve the performance of athletes,this paper takes the performance of Chinese and foreign men's Freestyle Skiing Aerials in the 19 th ? 23 rd Winter Olympic Games as the research object,using the methods of literature,video observation,comparative analysis,mathematical statistics,grey correlation analysis and grey prediction This paper makes a comparative analysis of the total scores and sub scores of the top eight men's Freestyle Skiing Aerials in the 19 th to 23 rd Winter Olympic Games,including the difficulty score,the flight and air action score,and the landing action score.The results are as follows:1.The world pattern of men's Freestyle Skiing Aerials has changed with the change of rules.From the competition results,China's position in the world pattern is unstable: compared with foreign countries in the 19th-20 th Winter Olympic Games,China is in a strong position,and compared with foreign countries in the 21st-23 rd Winter Olympic Games,China is in a weak position.At present,the competition among the participating countries is becoming increasingly fierce.2.Movement difficulty: the movement difficulty scores selected by Chinese and foreign athletes are gradually increasing,the utilization rate of sub high difficulty is the highest,the utilization rate of high difficulty movement and low difficulty movement is relatively low,and the low difficulty movement has been eliminated in the recent three competitions;the movement mobilization of our country takes 4.525 difficulty as the boundary,which is lower than or equal to 4.525 difficulty points In terms of landing,it can land stably,but when the difficulty score is higher than 4.525,Chinese athletes are not stable in landing,and the landing stability of foreign athletes is better than that of Chinese athletes;the difference of difficulty score used by Chinese and foreign athletes in the 19th-23 rd Winter Olympic Games is gradually narrowing,although the difficulty score of Chinese athletes has been improved,the high difficulty score of Chinese athletes is not complete The quality of finished products needs to be improved.3.On the whole,although there is a small gap between Chinese and foreign athletes,there is still a certain gap in the completion quality of high difficulty points,which is shown as follows:foreign athletes have good take-off technology and few mistakes in the completion of take-off,while Chinese athletes have relatively poor take-off technology and weak explosive power Or is not strong,resulting in the height of the flight,turnover in the split leg,hip flexion,knee flexion error more.4.Landing points: the landing stability of Belarusian,American and Canadian athletes is better than that of Chinese athletes,and there is a big gap between Chinese and foreign athletes in landing stability of high difficulty points.5.The grey correlation analysis shows that the correlation degree of the difficulty of movement,the movement of flight and air,the landing and the total score of Chinese and foreign athletes is unstable.The correlation degree between the total score components and the total score of foreign athletes in the 19 th Winter Olympic Games is movement difficulty score > flight and air movement score > landing score.The correlation degree between the total score components and the total score of Chinese and foreign athletes in the 20 th ? 22 nd Winter Olympic Games is: flight and air movement score > landing score > movement difficulty score.The correlation degree between the total score components and the total score of Chinese and foreign athletes in the 23 rd Winter Olympic Games is: flight and air movement score > landing score > movement difficulty score The correlation degree of performance was as follows: flight and air movement score > movement difficulty score > landing score.The grey prediction analysis shows that: the development trend of the total score components of Chinese and foreign athletes is the same: the movement difficulty score of Chinese athletes increases in a "U" shape;the movement difficulty score of foreign athletes increases in a straight line;the movement difficulty score of Chinese athletes decreases in a "U" shape;the movement difficulty score of foreign athletes increases in a "U" shape It has been developing in a straight line.