A cohort analysis of changes in physical morphologic development of pri-mary and secondary school students in Pujin community,Shanghai,2020-2022
Objective This study investigated trends in physical and morphological development among primary and secondary school students in Pujin community,to provide a basis for the formulation of public health policies and pro-grams for children and adolescents.Methods A stratified group of students 6-12 years old were studied during physical ex-aminations at seven primary and secondary schools in Pujin community in 2020 and 2022.Data on height,body mass,waist circumference,and hip circumference in the 2 years were collected,and changes in body morphology indexes were analyzed.Results A total of 3 957 students were surveyed in 2020-2022.The central obesity rate among primary and secondary school students 6-12 years old in the Pujin community in 2020 was 41.98％(845/2 013)among boys and 25.05％(487/1 944)among girls,and showed a statistically significant difference between sexes(x2=126.87,P＜0.001).Height growth peaked after 2 years for boys 10-11 years of age in 2020,and after 2 years for girls 7-9 years of age in 2020.The average 2-year BMI growth was 1.53±1.62 kg/m2 for boys in 2020,and a trend toward peak 2-year BMI growth for girls 10 years of age was observed in 2020.A 2-year decline in central obesity rates was observed for both sexes in 2020.The difference was sta-tistically significant(P＜0.001).Conclusions Changes in the development of body shape among students at primary and secondary schools in Pujin community in 2020-2022 were consistent with the law of adolescent growth and development.Height growth peaked earlier in girls than boys.High rates of central obesity were observed in both sexes but affected more boys than girls.Greater attention should be paid to nutritional health and active participation in physical activities among pri-mary and secondary school students.
Body heightBody massBody mass indexCentral obesity
NETL
NSTL
万方数据
