The Preliminary Construction Of The Evaluation Index System Of Mobility Ability Of Young Amateur Volleyball Players

The purpose of evaluation is to better feedback the training effect and make training plan.Amateur volleyball players are one of the basic conditions for the sustainable development of competitive volleyball.Compared with professional athletes,amateur athletes have shorter training time,less content and less intensity.However,the purpose of both training is to maximize the efficiency in the limited training time.With the acceleration of the tempo of attack and defense in modern volleyball,the ability to move is particularly important.It is successfully completed the foundation of all tactical action.However,there are few researches on the moving ability of volleyball,so it is necessary to build an evaluation system of the moving ability of amateur volleyball players.This study takes the evaluation index system of the mobile ability of young amateur volleyball players as the research object,and selects the important indicators of the mobile ability of young amateur volleyball players by using the methods of literature review,expert interview and mathematical statistics.Then,the students of sports training and physical education of grade 2017 and 2018 and sports training of grade 2019(volleyball)of Chengdu Sport University were tested.Factor analysis was carried out on the obtained data to extract the common factors affecting mobility,so as to build an evaluation system.Finally,the following conclusions are drawn:1?The construction of the evaluation index system of the mobile ability of young amateur volleyball players should follow the following five principles,which are:scientific principle,comprehensive principle,special principle,practical principle,combining quantitative and qualitative principle.The structure consists of three parts:evaluation index,index weight and evaluation standard.2?The evaluation index system consisting of 2 first-level indicators,10second-level indicators and 45 third-level indicators was preliminarily selected by means of literature review and expert interview.After two rounds of expert questionnaires and statistical analysis,the evaluation index system consisting of 2first-level indicators,8 second-level indicators and 8 third-level indicators was finally obtained.3?Through T test,it was found that there were significant differences in the six test indexes of side bridge test,meter word movement,three-stage leapfrog jump,v-shaped movement,forward and backward 3 meters connection movement 3 meters x2 and 30 meters running due to gender difference.4?Through factor analysis,it is concluded that the evaluation index of this study isdivided into four common factors.Factor 1 is named as the multi-direction moving speed factor.Factor 2 was named as lower limb explosive force factor.Factor 3 was named as the core stability factor;Factor 4 is called the reaction rate factor.The weights are factor 1(0.363)> factor 2(0.309)> factor 3(0.167)> factor 4(0.162).5?The percentile method is adopted to establish the scoring standard of individual indexes and the comprehensive evaluation grade,which is helpful for coaches and amateur athletes to objectively evaluate the current situation of the level of volleyball moving ability,and to find out the gap,so as to provide certain reference value in training practice.6?There was no significant difference in the scores of young amateur volleyball players in different positions.