Research On The Construction Of The Evaluation Index System For The Offensive Ability Of Domestic Defenders In The Professional Basketball Team

With the development of basketball,the trend of fast rhythm,strong confrontation and high shooting rate demands more and more high offensive ability of guard players.In order to excavate the domestic guard in the professional basketball offensive problems;To comprehensively evaluate the attacking ability of the domestic guards in the middle professional basketball league;It provides reference for the analysis of the offensive ability of the guard in the middle professional basketball.Based on the evaluation index system of the attacking ability of domestic guards in the Chinese professional basketball league,the data of 360 matches of 19 domestic guards in the Chinese professional basketball league in the 2019-2020 season were selected as the statistical object.By applying the method of documentary,expert interview,questionnaire survey method,video observation method,mathematical statistics method,the structural equation model method,first the experts to filter the preliminary design of indicators,and then through the normal distribution test,nonparametric test further significant means defender offensive ability difference of indexes and establishing evaluation index system of theory model.After using the confirmatory factor analysis to verify the rationality of the model,the evaluation index system of the domestic guard attacking ability in the secondary professional basketball is constructed and the rationality is tested.The following conclusions are drawn:1.Through literature review and expert questionnaire survey,the offensive ability of guards is divided into individual offensive ability and tactical cooperation ability,and further divided into scoring ability,breakthrough ability,offensive rebounding ability and other indicators,which provides a basis for the determination of the evaluation index system in this study.2.Formed the theoretical model of the evaluation index system of the attacking ability of domestic guards in the secondary professional basketball league.It preliminarily determines the theoretical model which can reflect the attacking ability of domestic guards in secondary professional basketball,including 5 second-level indexes,namely scoring ability(A1),breaking ability(A2),being attacked ability(A4),passing and catching ability(B1),basic coordination ability(B2),and 17 third-level indexes.3.Constructed the evaluation index system of the attacking ability of domestic guard players in the secondary professional basketball league.According to the theoretical model of the evaluation index system of the domestic guard attacking ability of the secondary professional basketball team,the structural equation model of the domestic guard attacking ability is established with the help of AMOS 22.0 software.The weight of each index was obtained by calculating the covariation coefficient and load coefficient of each index in confirmatory factor analysis.The weights of secondary indexes were scoring ability(0.26),breaking ability(0.23),being attacked ability(0.13),passing and catching ability(0.19),and basic coordination ability(0.19).4.Formulate the evaluation criteria for the attacking ability of domestic guard players in the professional basketball team.Formulate the evaluation criteria for the attacking ability of domestic guard in the professional basketball team according to the weight of each index and the index data of players.Through the correlation analysis of the comprehensive ranking and the efficiency value(PER)and the way of expert interview,the rationality and effectiveness of the evaluation criteria were further verified.