Analysis Of Technical And Tactical Characteristics Of Outstanding Men's Singles Tennis Players Over 30 Years Old

With the progress of science and technology,the tennis training level gradually improve,more and more advanced equipment,increased social medical means,on the increasingly scientific physical training,at the same time do guarantee of nutrition,rehabilitation and other auxiliary means,make the training more meticulous,excellent tennis player ability more and more prominent,the movement of life is becoming more and more long,the world more and more older athletes competitive level remains in the forefront of the world's top level,the achievements of their did not increase with age.Past predecessors' research in this aspect is less and not enough in-depth,to explore the best tennis-the player's technology and tactics the winning rule,provide a reference for our country outstanding tennis player's tactics,the article USES the literature material law,video observation method,has chosen to Roger federer,rafael nadal,novak djokovic(later respectively referred to as Roger federer,rafael nadal,novak djokovic)represented by over 30 elite male tennis players,Based on the analysis of the technical and tactical characteristics of the 30 matches in the Australian open and us open,which he participated in between 2008 and 2018.The results showed that the period from 2008 to 2016 as the pre-2017 and 2017-2018 as the post-2017,the following conclusions are drawn:1.According to the distribution of rackets,by comparing the number of rackets before and after 2017,the average number of bats of Federer and Djokovic showed a decreasing trend,with significant difference.The average number of rackets of Federer changed from 5.04 to 4.02,while the average number of rackets of Djokovic was more,from 6.20 to 5.69.It reflects that with the increase of age,the number of rackets is deliberately reduced while the offensiveness of batting is strengthened,which is in line with the characteristics of physical decline brought about by the increase of age.2.In terms of serving indicators,in the two years after 2017,the average number of Aces balls per set by Federer and Nadal was higher than before 2017,and Djokovic's serving increased sharply,and the scoring rate of first serve increased.This shows that with the increase of age,the service technology is more skilled,the service quality is further improved,the placement of the service is more precise,and the service is more offensive.3.In the use of the third bat technique,Federer's interception utilization rate increased after 2017,while the score rate was significantly different from that before 2017(P < 0.05).Nadal and Djokovic's forehand technique and interception use increased,offensive and scoring rate increased,reflecting the strategy of increasing offensive in the third bat on the advantage of continuing service.4.In terms of winning points,Aces and forehand strokes are the top scorers of the three players,among which Federer's Aces is the highest.After 2017,the percentage of forehand strokes,volleys and forehand sideways has been improved to varying degrees,which reflects the use of forehand technology to enhance offensiveness and improve the impact of hitting.