School of Public Health and Health Systems, University of Waterloo, ON, Canada.
Int J Public Health. 2012 Aug;57(4):699-709. doi: 10.1007/s00038-012-0336-2. Epub 2012 Feb 10.
To examine associations between students' time spent in moderate to vigorous physical activity (MVPA) and the school built environment while also considering features of the schools' social environment and student-level characteristics.
Using surveys and GIS measures, multilevel linear regression analysis was applied to examine the environment- and student-level characteristics associated with time spent in MVPA among grade 9-12 students (n = 22,117) attending 76 secondary schools in Ontario, Canada as part of the SHAPES-Ontario study.
Statistically significant between-school random variation in student MVPA was identified [[Formula: see text] = 9,065.22 (250.64)]; school-level differences accounted for 3.0% of the variability in student MVPA. Students attending a school that offered daily physical education or provided an alternate room for physical activity spent more time in MVPA than students attending a school without these resources. Moreover, as land-use mix diversity and walkability of the school neighbourhood increased, students' time spent in MVPA decreased.
Developing a better understanding of the environment- and student-level characteristics associated with students' time spent in MVPA is critical for informing school-based physical activity intervention programmes and policies.
考察学生在中等到剧烈体力活动（MVPA）中所花费的时间与学校建筑环境之间的关联，同时考虑学校社会环境和学生个人特征的特征。
利用调查和 GIS 测量，对参加安大略省 SHAPES-Ontario 研究的 76 所中学的 9-12 年级学生（n = 22117）的环境和学生个人特征与 MVPA 时间之间的关系进行多水平线性回归分析。
学生 MVPA 中存在显著的学校间随机变异 [[公式：见文本] = 9065.22（250.64）]；学校层面的差异占学生 MVPA 变异性的 3.0%。与没有这些资源的学校相比，参加提供每日体育课或提供替代体育课场地的学校的学生在 MVPA 中花费的时间更多。此外，随着学校周边土地利用多样性和步行便利性的提高，学生的 MVPA 时间减少。
深入了解与学生 MVPA 时间相关的环境和学生个人特征，对于为学校为基础的体育活动干预计划和政策提供信息至关重要。
