关键词: 超重, 肥胖, 学生, 干预性研究

Abstract: Objective To evaluate consequence of a school-based overweight and obesity intervention,and to provide evidence to prevent and control obesity in primary and middle school students. Methods Multi-stage stratified cluster sampling was used to select 9 933 students from six primary schools and six secondary schools in Chongqing which were randomly divided into intervention schools and control schools.Intervention schools were given to school environment policy intervention,health education and physical activity guidance.Before and after intervention,anthropometric examination and questionnaire survey were accomplished. Results After the intervention,the increased rate of overweight of intervention school (0.2%) was lower than the control schoo l(0.5%),the increased rate of obesity of intervention school (0.0%) was similar to the control school (0.1%),normal weight students of two groups in BMI,waist circumference,hip circumference were increased (P<0.05),overweight and obesity students of intervention school in BMI,waist circumference were decreased (P<0.05),overweight and obesity students of control school in hip circumference was increased and waist circumference was decreased (P<0.05),students of intervention school in obesity related diet accuracy was increased and unhealthy eating behavior reported rate were decreased (P<0.05). Conclusion A school-based overweight and obesity comprehensive intervention could control related indicators of obesity,and improve knowledge and behavior of dietary among primary and middle school students.

Key words: overweight, obesity, student, intervention studies