Roemmich James N, Epstein Leonard H, Raja Samina, Yin Li, Robinson Jodie, Winiewicz Dana
Department of Pediatrics, University at Buffalo, Buffalo, NY 14214, USA.
Prev Med. 2006 Dec;43(6):437-41. doi: 10.1016/j.ypmed.2006.07.007. Epub 2006 Aug 22.
To determine associations of the neighborhood and home television environments with young children's physical activity.
32 boys and 27 girls age 4 to 7 years wore accelerometers for 3 weekdays and 1 weekend day. The number of televisions in the home and television watching of the child were monitored using TV Allowance units for 3 weeks. A geographic information system was used to measure neighborhood environment variables.
Hierarchical regression analysis was used to predict physical activity, initially controlling for sex, age, socioeconomic status, adiposity, and child television watching in step 1. In step 2, the number of televisions did not significantly increase the amount of variability accounted for in the prediction of physical activity. In step 3, housing density and the interaction of housing density by sex accounted for an incremental 12% (p < 0.05) of the variability and in step 4 percentage park plus recreation area accounted for a further 10% (p < 0.05) of the variability. Greater housing density predicted increased physical activity of boys, but not girls.
Neighborhoods with increased proximity between homes and a greater proportion of park area are associated with greater physical activity in young children.
确定邻里环境和家庭电视环境与幼儿身体活动之间的关联。
32名4至7岁的男孩和27名女孩佩戴加速度计3个工作日和1个周末日。使用电视津贴装置对家中电视机数量和儿童看电视情况进行了3周的监测。利用地理信息系统测量邻里环境变量。
采用分层回归分析预测身体活动情况,第一步首先控制性别、年龄、社会经济地位、肥胖程度和儿童看电视情况。第二步,电视机数量并未显著增加身体活动预测中可解释的变异性。第三步,住房密度以及住房密度与性别的交互作用占变异性的12%(p<0.05),第四步,公园加休闲区百分比又占变异性的10%(p<0.05)。更高的住房密度预示着男孩身体活动增加,而女孩并非如此。
房屋之间距离更近且公园面积比例更大的邻里环境与幼儿更多的身体活动相关。