Human Environments Analysis Laboratory, Western University, London, ON N6A 3K7, Canada.
Department of Geography and Environment, Western University, London, ON N6A 5C2, Canada.
Int J Environ Res Public Health. 2020 Nov 24;17(23):8734. doi: 10.3390/ijerph17238734.
The purpose of this study was to measure the factors that influence children's moderate-to-vigorous physical activity (MVPA) during school curriculum time, recess time, and outside school time in a rural area. During the Fall and Winter of 2016, 34 boys and 55 girls aged 8-14 years from rural communities in rural Northwestern Ontario participated in the Spatial Temporal Environment and Activity Monitoring project. The children's MVPA was measured using an accelerometer, and child-level demographic, behavioral, and environmental data were gathered from surveys, passively logging global positioning units, and municipal datasets. Data on daily temperature and precipitation were gathered from the closest Environment Canada weather station. A mixed model was used to assess the relationship between child- and day-level factors and children's MVPA. On average, children were getting 12.9 min of MVPA during recess, 17.7 min during curriculum time, and 29.0 min of MVPA outside school time. During all three time points, boys were more active than girls. During curriculum time, children in lower grades were more active, and the weather had differing impacts depending on the time of day. The findings of this study illustrate the differences in MVPA and the factors that influence MVPA by time of day. Examining different time segments provides valuable information for understanding children's MVPA patterns.
本研究旨在测量影响农村地区儿童在校课程时间、课间休息时间和校外时间内中高强度身体活动（MVPA）的因素。在 2016 年秋季和冬季，来自安大略省西北部农村社区的 34 名男孩和 55 名 8-14 岁的女孩参加了时空环境和活动监测项目。通过加速度计测量儿童的 MVPA，从调查、被动记录全球定位单元和市政数据集收集儿童的人口统计学、行为和环境数据。从最近的加拿大环境部气象站收集每日温度和降水数据。使用混合模型评估儿童和日常因素与儿童 MVPA 之间的关系。平均而言，儿童在课间休息时间有 12.9 分钟的 MVPA，在课程时间有 17.7 分钟，在校外时间有 29.0 分钟的 MVPA。在所有三个时间点，男孩都比女孩更活跃。在课程时间，低年级的孩子更活跃，天气对一天中不同时间的影响也不同。这项研究的结果说明了 MVPA 的差异以及影响 MVPA 的因素因时间而异。检查不同的时间段为了解儿童的 MVPA 模式提供了有价值的信息。
