Neighborhood greenness and 2-year changes in body mass index of children and youth.
Neighborhood greenness and 2-year changes in body mass index of children and youth.
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DOI：
10.1016/j.amepre.2008.07.006
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发表时间：
2008-12
影响因子：
5.5
通讯作者：
Liu GC
中科院分区：
文献类型：
--
作者：
Bell JF;Wilson JS;Liu GC
现有的建筑环境和儿童和青少年的BMI研究表明，在人口密度高的社区，社区绿化与同期的关联。目前的研究测试了绿化和居住密度是否与儿童和青少年BMI的2年变化独立相关。样本包括3-16岁的儿童和青少年，他们连续24个月住在同一地址，并在1996-2002年期间从马里恩县IN诊所网络接受良好的儿童护理（n=3831）。多元线性回归用于检查第2年年龄和性别特异性BMI z分数，居住密度和卫星衍生的绿色测量之间的关联，控制基线BMI z分数和其他协变量。使用逻辑回归对BMI z评分从基线至时间2增加的指标与上述预测因素之间的相关性进行建模。无论居住密度特征如何，较高的绿色度与时间2时较低的BMI z评分显著相关。在模型中，无论绿化程度如何，较高的居住密度与时间2 BMI z评分无关。较高的绿色度也与儿童和青少年在2年内增加BMI z分数的几率较低相关（OR=0.87; 95% CI=0.79，0.97）。绿色可能是预防儿童肥胖的环境方法的目标。生活在绿色社区的儿童和青少年在时间2时的BMI z分数较低，可能是由于身体活动增加或户外活动时间增加。从成人研究的步行性的概念化，仅仅基于住宅密度，可能是不相关的儿童和青年在城市环境中。
Available studies of the built environment and the BMI of children and youth suggest a contemporaneous association with neighborhood greenness in neighborhoods with high population density. The current study tests whether greenness and residential density are independently associated with 2-year changes in the BMI of children and youth. The sample included children and youth aged 3–16 years who lived at the same address for 24 consecutive months and received well-child care from a Marion County IN clinic network within the years 1996–2002 (n=3831). Multiple linear regression was used to examine associations among age- and gender-specific BMI z-scores in Year 2, residential density, and a satellite-derived measure of greenness, controlling for baseline BMI z-scores and other covariates. Logistic regression was used to model associations between an indicator of BMI z-score increase from baseline to Time 2 and the above-mentioned predictors. Higher greenness was significantly associated with lower BMI z-scores at Time 2 regardless of residential density characteristics. Higher residential density was not associated with Time 2 BMI z-scores in models regardless of greenness. Higher greenness was also associated with lower odds of children’s and youth’s increasing their BMI z-scores over 2 years (OR=0.87; 95% CI=0.79, 0.97). Greenness may present a target for environmental approaches to preventing child obesity. Children and youth living in greener neighborhoods had lower BMI z-scores at Time 2, presumably due to increased physical activity or time spent outdoors. Conceptualizations of walkability from adult studies, based solely on residential density, may not be relevant to children and youth in urban environments.
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2.2
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