Research On The Effect Of Different Hitting Frequency Loads On The Base Line Hitting Accuracy Of College Tennis Players

In recent years,the number of collegiate tennis players has increased year by year,and collegiate athletes are becoming an important force in Chinese tennis.Current research shows that the basic physiological characteristics of tennis programs are mixed energy,average moderate exercise intensity,and short periods of small intensity and high-intensity exercise during the game.In tennis,the hitting technique of the bottom line forehand and backhand position is the most important technique,and it is also the most important scoring means in college tennis games.Through research and research,it has been found that whether it is a beginner or an athlete,the most important proportion of technical training is the base-line forehand and backhand hitting practice.However,although there are explanations for the hitting frequency in training,it is more vague and not systematic,what kind of load is different hitting frequency,and the grasp of the sports load in training is not accurate enough.Existing studies have proved that with the increase of exercise load,the physical ability of athletes decreases,changes in hitting accuracy,and the accuracy of hitting decreases,but this result is controversial,some studies believe that with the increase of sports load,hitting accuracy decreases,and some studies believe that this decline in hitting accuracy with the increase of sports load is not significant,but a significant decline under larger exercise load.Starting from the actual exercise load of college tennis matches,this study explores the influence of different hitting frequency loads on the accuracy of athletes’ shots.Purposes:The effect of increased exercise load on athletes was measured by comparing the difference in hitting accuracy between subjects at different exercise load hitting frequencies.Preliminary exploration of the exercise load of tennis players during training,to understand in which hitting frequency the best hitting accuracy of athletes,and under what hitting frequency has the greatest impact on their hitting accuracy,so as to enrich the relevant research of tennis training and teaching,provide a certain scientific method for their training,and select the corresponding hitting frequency through different training purposes in actual training.Methods:This study uses the literature method to investigate the current status of the research and provide literature support for the content of this study.In the experiment,13 second-level tennis players from Shanghai University of Sport were selected as test objects.Based on the hitting frequency in the Chinese Collegiate Tennis Championship,of which 18-22/min hit frequency accounts for 77%,players complete the shot at12/min,16/min,20/min,24/min respectively,and the hitting accuracy at 12/min hitting frequency is the closest to the personal best level,of which the hitting frequency of12/min is used as the baseline data of athletes’ hitting accuracy.The other three hitting frequencies compare the changes in hitting accuracy under different frequency movement loads.Test indicators: age,HR,RPE,forehand hitting accuracy,backhand hitting accuracy,forehand straight hitting accuracy,forehand slash hitting accuracy,backhand straight hitting accuracy,backhand slash hitting accuracy.The mathematical statistics method is used to process the experimental data,and the normality test is performed on the data first,and the one-way repeated measurement ANOVA is used for those that conform to the normal distribution,and the nonparametric test is used for those that do not conform to the normal distribution.Based on this result,the data were processed to study the load intensity of athletes with different hitting frequencies by using one-way repeated measurement ANOVA,and the nonparametric test and univariate repeated measurement ANOVA were used to study the accuracy of forehand,backhand,forehand straight line,forehand oblique line,backhand straight line,and backhand oblique under different sports loads,as well as the comparison of the hitting accuracy of the forehand and backhand at the same hitting frequency and the comparison of the hitting accuracy of the four hitting lines at the same hitting frequency.Result:Firstly,the internal load difference between different hitting frequencies is analyzed and studied,and the hitting frequency is quantified to express the physiological response of athletes in hitting frequency.The average exercise intensity of 12</min was 67% HRmax,the average exercise intensity of 16/min was 73%HRmax,the average exercise intensity of 20/min was 79% HRmax,and the average exercise intensity of 24/min was 86% HRmax.Athletes were subjected to different exercise loads in different hitting frequencies,and the baseline hitting frequencies of12/min and 16/min were medium exercise intensities according to the exercise range,and 20/min and 24/min were large exercise intensity.Compared with the baseline data,there was no significant decrease in the forehand position(P>0.05),little change in hitting accuracy,and a significant decrease(P<0.05)at 24/min,which decreased significantly at this frequency.Compared with the baseline data,the backhand position did not show a statistically significant difference in different exercise loads(P>0.05),and the change in exercise load did not have a significant effect on its hitting accuracy.The accuracy of forehand hitting was better than that of backhand(P<0.05)at different hitting frequencies,showing the characteristics of forehand being better than backhand.Compared with the baseline data,there was no significant decrease in the accuracy of16/min and 20/min forehand straight strokes(P>0.05),and the hitting accuracy did not change much.At the 24/min hitting frequency,the hitting accuracy decreased significantly(P<0.05),and the decrease was more obvious in this hitting frequency.There was no statistical difference in hitting accuracy on the forehand slash,backhand straight line,and backhand slash lines(P>0.05),and the hitting accuracy of these three lines was less affected by the sports load.Under the same hitting frequency,there was no significant difference in the hitting accuracy of the four hitting lines(P>0.05),and the hitting accuracy of the four hitting lines was relatively stable.Conclusions and Recommendations:Hitting accuracy did not decrease significantly with increasing exercise load,and in this study there was a significant decrease in the 24/min hit frequency of 86% HRmax compared to baseline data.Prior to this,there was no significant decrease in the frequency of shots compared to the baseline data;The accuracy of forehand hitting decreased significantly in the 24/min hitting frequency of 86% HRmax,while the accuracy of backhand hitting did not decrease significantly with the increase of hitting frequency.Except for the forehand straight line,none of the other three lines decreased significantly with the increase of motion load;In different sports loads,the accuracy of forehand hits is better than that of the backhand.It is recommended to use a moderate exercise intensity load for training that aims at technical movement practice and hitting accuracy.It is recommended to use high-intensity hitting frequencies in training that aims for specific fitness and hitting accuracy under high exercise intensity loads.