Hiệu quả can thiệp thay đổi lối sống cho học sinh lớp 6 thành phố Hồ Chí Minh

This study aimed to evaluate the effectiveness of peer - led intervention on time spent on physical activity, sedentary behaviors and dietary patterns between the intervention arm and the control arm. Eight secondary schools were randomized to the intervention group (4 schools) and the control group (4 schools). Mixed effect models were applied to evaluate the effects of the intervention, which were adjusted for age , gender, BMI at baseline, and cluster effect in schools. 6th graders received 4 lessons on nutrition and exercises from 8th graders. The supporting system was launched to maintain 6th graders’ compliance. Students in control schools received usual educational curriculum. After a 6 - month follow - up, there were an increase in the time spent on physical activities by 8 ± 3.5 minutes/day , and a decrease in the time spent on sedentary behaviors on weekdays by 35 ± 9.9 minutes/day in the intervention arm (p < 0.05) compared to the control group, which were adjusted for age , gender, BMI at baseline, and cluster effect in schools). The intake of cereals decreased by 62 ± 19.0 gram/day and the fruit consumption increased by 36 ± 15.0 gram/day in intervention schools (p < 0.05) compared to the control. Students in the intervention group reduced the frequency of soft drinks intake by 0.79 times compared to the control (p < 0.05). Therefore, our project proved the effectiveness of the peer - led intervention on physical activity and dietary behaviors among adolescents.