期刊
JOURNAL OF URBAN HEALTH-BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE
卷 87, 期 1, 页码 44-53出版社
SPRINGER
DOI: 10.1007/s11524-009-9409-9
关键词
Built environment; Residential density; Physical activity; Sedentary behavior; Adolescents; China
资金
- Nanjing Municipal Department of Health [2004-84-ZKX0418]
- Nanjing Municipal Department of Science and Technology [2004-168-0414]
- National Health and Medical Research Council (NHMRC) of Australia [301200]
- Queensland Health, Australia
- NHMRC Public Health Fellowship [301261]
In the context of recent social and economic transitions in China, lack of physical activity among adolescents is an emerging health risk, particularly so in rapidly expanding urban areas. Evidence from Western countries suggests that built environment attributes can influence the physical activity participation of young people, but whether or not this is the case for China is unknown. We recruited high school students from ten urban districts in Nanjing, Mainland China (n = 2,375; mean age = 13.9 +/- 1.0 years old; 46% boys; survey response rate = 89%). The outcome variable was self-reported recreational physical activity time; the primary explanatory variable was the residential density of the urban districts. Analysis was conducted using mixed-effects logistic regression models. After adjustment for potential confounding variables, including sedentary behavior and green space, there was a consistent and graduated association between residential density and physical activity; residential density was significantly negatively associated with recreational physical activity time for students from the higher tertile of residential density (OR; 95% CI = 0.64; 0.42 to 0.97) compared to those from the lower tertile. The direction and magnitude of the negative association between residential density and physical activity was similar for boys and girls. It should be a public health priority to identify the particular urban environment attributes that can encourage and support young people's participation in physical activity.
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