新冠肺炎疫情前后苏州市儿童青少年体质量指数的变化

目的 探讨新型冠状病毒肺炎(COVID-19)疫情前后苏州市儿童青少年体质量指数(BMI)的变化,为促进儿童青少年体质健康提供参考.方法 2020年6-7月采用分层整群抽样方法,对苏州市2019年完整BMI监测数据的569名儿童青少年进行问卷调查,测量身高、体重,计算BMI及BMI-Z评分.结果 疫情后儿童青少年超重肥...

Body mass index changes among children and adolescents in Suzhou before and after COVID-19 outbreak

  Objective  To explore body mass index (BMI) changes among children and adolescents in Suzhou before and after COVID-19 outbreak, and to provide a reference for improving physical health of children and adolescents.  Methods  A total of 569 children and adolescents who had complete BMI information in 2019 were enrolled through stratified cluster sampling from June to July, 2020. Questionnaire survey was conducted, and height and weight were measured to calculate BMI and BMI-Z scores.  Results  After the epidemic, overweight/obesity rate were 32.0%, compared to 31.6% before the epidemic(χ2=0.07, P>0.05). Difference of BMI-Z scores before (0.37±1.28) and after (0.38±1.27) the epidemic did not show statistically significant (t=-0.28, P>0.05), No significant changes in BMI-Z score were found before and affer COVID-19 outbreak similar results were observed (P>0.05), BMI-Z scores after the epidemic (0.45±1.32) was higher than it before the epidemic (0.37±1.35) among primary school group (t=2.57, P=0.01), while BMI-Z scores after the epidemic (0.27±1.17) was lower than it before the epidemic (0.39±1.18) among middle school group (t=-4.29, P < 0.01). Proportion of sweet food consumption and outdoor activities was statistically different before and after the epidemic(P>0.05), proportion of sugar-sweetened beverages consumption and fried food intake were statistically different before and after the epidemic (P < 0.05), sleep time after the epidemic (8.52±1.83)h was higher than it before the epidemic (8.05±1.70)h (t=4.96, P < 0.05).  Conclusion  Before and after COVID-19 outbreak, BMI and overweight/obesity rates are significantly different among children and adolescents in Suzhou, and there is a slight difference in different studying phases.