The Built Environment Factors That Influenced Children And Adolescents’ MVPA Study

Object: This study was to explore children to and from school commuting distance, residential area and school surrounding greening, intersection density, distribution in the open space, sports venues and facilities built environment factors such as the effects of high intensity physical activity of children and adolescents, and based on the research results and combining with the BESP concept, 59 blocks within the target area for the child and adolescent physical activity environment, the natural ecological security level and the evaluation of fruits and vegetables supply environment.Methods: 9 to 17 children total 297(151 boys, 146 girls) were selected in research area, to wear Acti Graph accelerometer measurement of high strength 7 days of physical activity, after screening the effective sample data for 297(151 boys, 151 girls). Home address on the basis of 297 samples, using Arc GIS10.0 software analysis samples within the scope of green residential area around 1 km buffer and intersection, open space, sports venues and facilities and public transport site density, schools around 1 km buffer within the scope of green density and public transportation site. Later, on the basis of 33 and two 66 percentile to number of effective samples daily average time of MVPA divided into three levels 1, 2 and 3 as independent variables, and assignment based on 33 and 66 two same percentile number of independent variables commuting distance, residential area and surrounding the school district greening, intersection, open space and public transportation sites and the density of sports playgrounds and facilities of high and low level is divided into three levels and assignment 1, 2, and 3. Finally, the sociology of population variables of sex, grades and parents’ level of education as control variables into orderly classification more Logistic regression model. Based on regression model of the impact of child and adolescent physical activity mainly in built environment factors and combining the BESP concept within the target area on 59 blocks of child and adolescent physical activity environment(outdoor sports venues and facilities accessibility), the natural ecological security level(and the distance between the ecological source) and to evaluate the fruits and vegetables supply environment.Results:After analysis found that residential area surrounding the density of sports playgrounds and facilities for each level, increase the level of the dependent variable changes forecast coefficient beta 1.158, p = 0.033 and 1.663, p = 0.004, the density of residential area surrounding the intersection between level 2 and level 3 forecast coefficient beta 2.019, p = 0.000). Other built environment element density was found and the independent variable is a clear correlation. By evaluating found that in terms of the whole assessment areas, 59 blocks which mainly part of residential land block of sports venues and facilities accessibility level is low, on the southwest area of 25, 26 and 30 blocks of ecological security level is low, and 8 blocks which mainly part of residential land blocks the low level of fruit and vegetable supply environment.Conclusions: Children around residential area sports venues and implement the increase of density and density of the street intersection can help to improve the daily high intensity of physical activity. Therefore, our daily in the urban space construction, attention should be paid to small for the construction of sports venues and facilities as well as the connectivity between different land patches. In addition, still should strengthen the accessibility of health food environment and the natural ecological security level of maintenance and repair, etc.