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Prev Chronic Dis. 2014 Oct 16;11:E179. doi: 10.5888/pcd11.130432.
Physical activity may protect against overweight and obesity among preschoolers, and the policies and characteristics of group child care centers influence the physical activity levels of children who attend them. We examined whether children in New York City group child care centers that are compliant with the city's regulations on child physical activity engage in more activity than children in centers who do not comply.
A sample of 1,352 children (mean age, 3.39 years) served by 110 group child care centers in low-income neighborhoods participated. Children's anthropometric data were collected and accelerometers were used to measure duration and intensity of physical activity. Multilevel generalized linear regression modeling techniques were used to assess the effect of center- and child-level factors on child-level physical activity.
Centers' compliance with the regulation of obtaining at least 60 minutes of total physical activity per day was positively associated with children's levels of moderate to vigorous physical activity (MVPA); compliance with the regulation of obtaining at least 30 minutes of structured activity was not associated with increased levels of MVPA. Children in centers with a dedicated outdoor play space available also spent more time in MVPA. Boys spent more time in MVPA than girls, and non-Hispanic black children spent more time in MVPA than Hispanic children.
To increase children's level of MVPA in child care, both time and type of activity should be considered. Further examination of the role of play space availability and its effect on opportunities for engaging in physical activity is needed.
身体活动可能有助于预防学龄前儿童超重和肥胖,而团体日托中心的政策和特点会影响入托儿童的身体活动水平。我们研究了纽约市遵守儿童身体活动规定的团体日托中心的儿童与不遵守规定的中心的儿童相比,其活动量是否更多。
在低收入社区的 110 家团体日托中心服务的 1352 名儿童(平均年龄 3.39 岁)参与了此项研究。收集了儿童的人体测量数据,并使用加速度计来测量身体活动的持续时间和强度。采用多层次广义线性回归模型技术来评估中心和儿童层面因素对儿童身体活动水平的影响。
中心遵守每天获得至少 60 分钟总身体活动的规定与儿童中等到剧烈身体活动(MVPA)水平呈正相关;遵守获得至少 30 分钟结构化活动的规定与增加 MVPA 水平无关。有专用户外游戏空间的中心的儿童也会花费更多时间进行 MVPA。男孩比女孩进行 MVPA 的时间更多,非西班牙裔黑人儿童比西班牙裔儿童进行 MVPA 的时间更多。
为了增加儿童在日托中的中等到剧烈身体活动水平,应同时考虑时间和活动类型。需要进一步研究游戏空间可用性的作用及其对身体活动机会的影响。