Context-Specific Outdoor Time and Physical Activity among School-Children Across Gender and Age: Using Accelerometers and GPS to Advance Methods.

摘要: Introduction: Being outdoors has a positive influence on health among children. Evidence in this area is limited and many studies have used self-reported measures. Objective context-specific assessment of physical activity patterns correlates, such as outdoor time, may progress field.Aims: To employ novel objective measures to assess age gender differences weekday behavior school-children (outdoor time MVPA) investigate associations between MVPA.Methods: A total 170 children had at least one nine hours combined accelerometer GPS data were included the analyses. The processed using Personal Activity Location Measurement System purpose-built PostgreSQL database resulting for MVPA overall daily MVPA. In addition, four domains (leisure, school, transport home) 11 subdomains (e.g. urban green space, sports facilities) created assessed. Multilevel analyses provided results association MVPA.Results: Girls compared boys fewer minutes (pConclusion:A new methodology been developed can be expanded other populations. Different found age, suggesting different strategies needed promote