ITN International Tennis Level And Competitive Fitness Related Research

Objective: as the world's second largest tennis ball games in the popularization and the development of our country,more and more people into the attractive movement.But the dominant class sports tennis is a skill,only mastered a certain degree of tennis skills,can very well enjoy tennis fitness effect and fun.Tennis players or participants competitive tennis fitness level directly affects the own tennis technology.Research about fitness and tennis are common,but for fitness and special little research of tennis and go further into the sports fitness,is rare.This article through to the subjects of tennis technical level and competitive fitness measurement,related analysis,understand the index technology of tennis sports fitness.To take the appropriate training means and methods for athletes or the change of tennis amateur sports fitness,enhance their tennis technology.To explore the sports fitness to the impact of the tennis technology(ITN),to evaluate the training effect and improve the level of training to provide a solid theoretical basis.Methods: ITN international tennis level test can objectively evaluate the athletes or amateur tennis technical level,in order to explore tennis ITN and athletic ability of correlation,this study used the experimental method,mathematical statistics,documentary and expert interview method,etc.,by measuring the hospital 60 boys(tennis elective classes of students,graduate and professional tennis players)competitive fitness index and a corresponding subjects ITN every international international tennis level test scores.Sports fitness indicators including speed quality(10 meters sprint test),explosive testing(the upper part of the explosive force,former head thrown solid sphere and the lower half power: longitudinal vertical jump test),sensitive and coordination test(hexagon jump),reaction time,choice reaction time),balance ability test(close their eyes on one leg)five competitive fitness index.ITN level testing mainly include bottom line depth test,the bottom line,the depth of the volley shot accuracy test five parts,serve and mobility.Results: 1.The tested data,using SPSS to subjects of competitive fitness index and ITN score statistic description and the analysis of single sample statistics.Subjects balance index of discrete degree is bigger,other indicators of discrete degree is relatively small.2.Using the SPSS to sports fitness index and ITN percentage for correlation analysis,through analysis,sports fitness index correlated with percentage of ITN found:(1)the upper part of the explosive and highly correlated to the ITN percentage(r = 0.767,p < 0.01);(2)sensitive,coordination and significantly correlated to the ITN percentage(r = 0.567,p < 0.01);(3)the speed quality and significantly correlated to the ITN percentage(r = 0.414,p < 0.01);(4)the lower half percentage of explosive and ITN has significant correlation(r = 0.284,p < 0.05);(5)the response ability and balance ability index and ITN percentage had no significant correlation(p > 0.05).Percentage of participants' competitive fitness index and ITN order correlation was: upper body explosive force >sensitive and coordination > the lower half explosive > speed quality,response ability and the ability to balance and ITN percentage has no relevance.3.The use of SPSS and Excel software to "ITN percentage" as the dependent variable and "competitive fitness index" as the independent variable,regression analysis.On the upper part of the explosive force,lower half power,agility and coordination,speed,quality and ITN percentage for a yuan regression analysis.Select correlation explosive force of the upper part of the larger,agility and coordination and speed quality and ITN percentage for multiple regression analysis.And establish the corresponding regression model,the relative accuracy to forecast the result of optimization.By regression analysis,the upper part of the explosive force,lower explosive force and ITN percentage of multivariate regression,to the upper part of the explosive force and the lower half explosive respectively with ITN percentage for a yuan regression analysis.Conclusion: through the research,ITN international tennis level test and sports fitness index in speed quality index,power index and sensitivity and coordination index has relevance,balance ability and ability to respond to no correlation between indicators.Sort of related factors were analyzed,the participants of competitive fitness index correlated with percentage of ITN order are: the upper part of the explosive force> sensitive and coordination > the lower half explosive > speed quality,response ability and the ability to balance and ITN percentage has no relevance.Monadic regression and multiple regression model is established to verify the correlation of at the same time,establish the corresponding regression model,the relative accuracy to forecast the result of optimization.To provide strong theoretical basis for sports training practice: tennis player or tennis enthusiasts,the master tennis skills at the same time,the sports fitness indicators of a certain intensity training,enhances own competitive fitness index,targeted training can be in accordance with the upper part of the explosive force,sensitive and coordination,speed,quality,lower power order,improve the tennis player or competitive fitness of tennis players,which combined with tennis technical training,more beneficial to the improvement of the overall level of tennis,making tennis better spread and development in our country,as soon as possible for our country's tennis movement towards the world advanced level in the tennis.