The Association Between Green Space And Physcial Activity, Sedentary Behavior Among Chinese Adolescent Students

PURPOSE: To explore the impact of campus green space on physical activity (PA) and sedentary behavior (SB) among Chinese adolescents. METHODS: We conducted a survey among freshmen in Tsinghua University. We collected student's high school information and their PA and SB information. We collected physical activity and sedentary behavior by the Harvard Alumni Health Study Physical Activity Questionnaire (HAHS-PAQ) during the period of their high schools. We used high resolution land cover dataset which provided by the European Space Agency and ArcGIS software to calculate the level of green space. The final sample size was 690 (71% male, 17.93, 173.65, 65.25, 21.53) of Age, Height, Weight and BMI) , participants come from 123 different high schools). We used Chi-square test, correlation analysis and linear regression to analyze the data. RESULTS: Every 1% increase in green space inside the university was associated with an increase of 3.68 min per wk in students’ vigorous PA (VPA) time, 6.07 min per wk in moderate PA (MPA) time and 9.75 moderate to vigorous PA (MVPA) time , as well as an decrease of sedentary behavior (SB) 9.66 minutes per week. CONCLUSIONS: There is an significant positive relationship between the level of green space in school and VPA, MPA and MVPA among adolescents, and a significant negative association with the level of green space and SB.