Establishment Of Physics Fitness Evaluation Standards For Children Aged 7-12 Years Old In Shanghai Social Sports Training Institutions Based On LMS Method

purposes:With the introduction of policy documents such as the "Healthy China 2030 Plan Outline" and the reform of the physical education entrance examination,the concept of health first has gradually taken root in the hearts of the people.More and more people are voluntarily participating in sports,making all kinds of sports Training institutions are booming.While the sports training market is developing rapidly,it lacks a complete set of evaluation standards to evaluate the training effect and teaching quality of the sports training market.With the help of Shanghai Youth Sports Association and Shanghai Jiushi Sports Event Company,this study intends to adopt the LMS method to formulate a set of physical fitness evaluation standards applicable to social sports training institutions,and provide certain standards for the development of children’s physical fitness in the future.Reference;At the same time,it provides a theoretical basis for standardizing social sports training institutions and establishing scientific and reasonable evaluation standards.method:The preliminary selection indicators of physical fitness test were determined through the method of literature data and expert interviews.After two rounds of expert questionnaires,7first-level indicators and 8 second-level indicators of physical fitness were finally established.This study selected 81 sports training institutions registered by the Youth Sports Association,with a total of 3,029 trainees.The test data is analyzed and processed by SPSS 25.0 and LMS analysis software,and the P3,P10,P35,P65,P90 values of physical fitness related indicators are obtained.Based on this value,the fitness scoring standard for children aged 7-12 in Shanghai is formulated.result:1.Through the LMS method,the percentile curves of children’s BMI,20-meter round-trip run,grip strength,straight-arm sit-ups,30-meter sprint run,seated forward bend,leaping,and standing on one foot with closed eyes were obtained.There are varying degrees of difference in percentile curves between men and women in items such as sitting forward bending,20-meter round-trip running,and grip strength.2.On the basis of the percentile curve graph,the reference value database of 8 test indexes of children’s physical fitness of 7-12 years old is obtained.It can reasonably monitor the training effect of the sports club and adjust the training program according to the feedback effect.3.Based on the percentile curve of various indicators and the reference value database,an online assessment system for physical fitness of children aged 7-12 in Shanghai has been established,so that the tester can clearly and intuitively understand where he or she is among similar groups of people.The degree of pros and cons in each test item.conclusion:1.It is scientific and feasible for the LMS method to be used in the establishment of the fitness evaluation standards for children aged 7-12 years old in Shanghai social sports training institutions.2.It is more reasonable to use eight items such as BMI,20-meter round-trip running,grip strength,and straight-arm sit-ups as indicators for assessing children’s physical fitness level.