Effects of comprehensive lifestyle intervention on the nutritional status of primary school students in Shenzhen
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维普
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目的 调查深圳市小学生营养现状,评估基于学校和家庭的综合生活方式干预对学生超重肥胖防控的有效性,为未来制定儿童肥胖干预措施提供科学依据.方法 采用随机对照试验研究,选取2021-2022学年基线时为三年级的学生,随机分为干预组和对照组,干预组进行综合生活方式干预,对照组接受常规健康教育,1年后进行随访调查并进行问卷调查和体格测量.收集数据采用Stata16.0统计软件进行差异性检验.同时采用广义线性混合模型,对总体干预效果进行评估,并按照性别和儿童基线体质量状态分别进行分层分析.结果 共纳入学生1434名,基线儿童超重肥胖率为24.91％(干预组24.09％,对照组26.03％).干预后主要结局变量超重肥胖率[比值比(oddsratio,OR)为1.13,95％置信区间(confi-dence interval,CI):0.71～1.81,P=0.609]和消瘦率(OR=1.34,95％CI:0.79～2.26,P=0.272)的变化及干预对体质量指数(body mass index,BMI)的作用差异无统计学意义(P=0.099).基于学校和家庭的综合干预措施对营养素养和身体活动的作用存在性别差异,男生营养素养总分较对照组升高(OR=1.00,95％CI:0.16～1.84);男生、女生营养素养知识得分较对照组均升高(OR=0.59,95％CI:0.24～0.94;OR=0.38,95％CI:0.03～0.72);男生中等强度身体活动时间减少(OR=-8.84,95％CI:-17.29～-0.39).结论 基于学校和家庭的综合生活方式干预未降低儿童超重肥胖率和BMI,但可有效提升儿童的营养素养和身体活动时间,且性别和儿童基线体质量状态对干预效果均存在一定影响.
Objective This study aimed to investigate the current nutritional status of primary school students in Shenzhen and to assess the effectiveness of comprehensive lifestyle interventions based on school and family in preventing and controlling overweight and obesity among students.The study aimed to provide a scientific basis for future development of childhood obesity interventions.Methods A randomized controlled trial study was conducted with a baseline survey in 2021,randomly divided into an intervention group and a control group.Comprehensive interventions were carried out,and a follow-up survey was conducted one year later,including questionnaire surveys and physical measurements.The collected data were analyzed using Stata 16.0 statistical software for t-tests.Additionally,generalized linear mixed models were also used to assess the overall intervention effect,and stratified analysis was conducted based on gender and children's baseline body mass status.Results A total of 1 434 students were included,with a baseline overweight and obesity rate of 24.91％(24.09％in the intervention group and 26.03％in the control group).The main outcome variables,the change in overweight/obesity rate[odds ratio(OR)=1.13,95％(confidence interval,CI):0.71-1.81,P=0.609]and the change in thinness rate(OR=1.34,95％CI:0.79-2.26,P=0.272)showed no statistically significant differences,and the intervention's on body mass index(BMI)was not statistically significant(β=0.14,95％CI:-0.03-0.30,P=0.099).There were gender differences in the effects of comprehensive school-and home-based interventions on nutrient literacy and physical activity,with total nutrient literacy scores elevated in boys compared to controls(OR=1.00,95％CI:0.16-1.84)and nutrient literacy knowledge scores elevated in both boys and girls compared to controls(OR=0.59,95％C1:0.24-0.94;OR=0.38,95％CI:0.03-0.72);and moderate-intensity physical activity time decreased in boys(OR=-8.84,95％CI:-17.29--0.39).Conclusions The comprehensive school-and home-based lifestyle interventions did not reduce the rate of overweight and obesity or BMI in children,but they effectively improved children's nutritional literacy and physical activity time.Gender and childrens baseline body mass status both had an effect on intervention outcomes.
LifestyleGrowth and developmentNutritional literacyPhysical activity
维普
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