Study On Motor Ability Of Second Grade Students Of Different Months In Yangpu District Of Shanghai

Purpose:Children are an important period in the course of life,movement ability can reflect a person’s ability to complete a variety of actions or activities.It is the core of human sports learning and development,including the development process from basic motor skills to advanced motor skills.The movement ability in childhood plays an important role in the whole life course.Relative age refers to the difference in age between individuals in the same group as a result of some form of activity,this can lead to inequities in education and sports because older individuals take longer to develop.This study was to investigate the development of basic body shape and motor ability of early children in different age groups.To explore whether there is a relative age effect on the development of basic body shape and motor ability of early children and whether there is a gender difference in the relative age difference of early children,at the same time,to study the difference of different sex children in different age groups.Methodology:To collect data on the test results of movement ability of second-grade students(aged 85-96 months)in some schools in Yangpu District in 2015,2016,2017,2018 and 2019,the Aptitude Test included the 20-metre sprint,the balance beam walk backward,the 80-gram ball throw,the six-minute run,the 40-second push-ups,the upright forward bend,the 15-second side jump,the 40-second sit-ups and the standing long jump.K-S test was used to Normality test the measurement samples,correlation between dependent variables and independent variables was analyzed by product-difference correlation,and the fitting degree of the model to the observed values was adjusted by R2 measurement estimation Independent variables were tested by Durbin-watson(U)test;statistical inference of the overall regression coefficient β was performed by regression analysis of variance,and the test level α value was taken as a two-sided 0.05.Α = 0.05 is the test level,P < 0.05 is the difference has the statistical significance,and lists the corresponding linear regression equation,carries on the induction summary to the analysis data to obtain the research result as follows.Results:The body shape and movement ability of the second grade children in Yangpu District are different in relative age.The differences of height,20-meter running,throwing,endurance,push-up,side-jump and sit-up in boys were greater than that in boys(p <0.05),the difference in weight and orthostatic flexion was greater in girls than in girls(p < 0.05).Boys’ upper and lower limb burst,abdominal muscle strength and endurance were better than girls’.Girls’ upper limb relative strength endurance,precise control coordination ability and flexibility were better than boys’(p < 0.05),there was no significant difference in time pressure coordination between the sexes(P > 0.05),and there was significant difference in the scores of different indexes(except 15-second side jump)between the sexes.Conclusion:1.In the aspect of school physical education,attention is paid to the relative unfairness of early children caused by their relative age,and the relative age difference is taken into account in the course grouping,physical fitness monitoring and physical education examination.(2)in the selection of sports reserve talents,we should not only focus on body shape and physical quality,but also take the relative age effect into account in the evaluation of early children’s movement ability and sports performance.(3)the difference of movement ability of boys is greater than that of girls.In sports activities,attention should be paid to the children whose movement ability is not developed enough,and targeted training should be carried out.