Effects of comprehensive intervention on 24 h activity behavior among obese students in vocational colleges / 中国学校卫生

ABSTRACT

Objective@#To explore the effects of comprehensive intervention measures targeting physical activity, sedentary, sleep and other behaviors on 24 h activity behavior of obese students in vocational colleges, so as to provide a more tailored empirical basis for intervening obese students in vocational colleges.@*Methods@#A quasi experimental design using parallel controlled, randomized grouping was conducted from January to March 2023. A total of 79 first year obese students from a vocational college in Wuxi City were selected as the intervention group (41 students) and the control group (38 students). From April to June, 2023, the control group received no intervention, while the intervention group adopted an information based and behavioral intervention approach to comprehensively intervene in 24 h physical activity, sedentary, sleep and other behaviors (120 minutes each day for 8 weeks).Wherein, information based intervention mainly used paper leaflets and social and learning software to accurately push intervention information, and behavioral intervention mainly concentrated 1 hour of physical exercise and multiple activity behavior requirements every day with the triaxial accelerometer to feedback the objective data of physical activity. Subsequently, from June to July, 2023, a one week post test and follow up survey were conducted respectively.Bouchard diary in physical activity, Weekly questionnaire and triaxial accelerometer were used to record the 24 h activity behavior of both groups of students. T-test and repeated measurement analysis of variance were used to compare the differences of 24 h activity component index time between two groups before and after intervention and examine the changes within each group.@*Results@#Before and after intervention, there was no significant difference in the time of each component index of 24 h activity behavior in the control group. However, repeated measures analysis of variance between the intervention group and the control group revealed statistically significant interaction differences in physical activity, sedentary behavior, sleep and other index time were statistically significant(pre-test and post test F =6.45, 4.66 ,7.21,7.88; pre-test,post-test and follow up test F =5.37,5.12,5.43,5.29; P <0.01). During the followup period, compared with the post-test data [(313.25±54.15, 601.88±65.47, 462.83±42.86, 61.92±18.53)min/d], the time of each component (physical activity, sedentary behavior, sleep, other) of the 24 h activity behavior of students in the intervention group rebounded [(298.52± 60.27 , 613.69±68.55, 442.33±45.26, 85.28±20.57)min/d], but it was better than the pre-test data [(230.45±67.42, 720.32±105.63, 369.78±32.31, 119.29±22.17)min/d], and the difference was statistically significant( F =42.46,39.45,33.41,59.43, P <0.01). During the intervention period, the physical activity, sedentary and sleep duration indicators of the intervention group students showed fluctuating patterns in the 4th and 5th weeks.@*Conclusions@#The comprehensive intervention on 24 h activity behavior among obese students in vocational colleges shows significant effectiveness, but its sustainability is insufficient. Considering the characteristics of obese students in vocational colleges, personalized intervention measures should be provided to increase physical activity and sleep time and reduce static activity time, in order to promote students to develop a healthy lifestyle.