在女性健康倡议圣地亚哥队列研究中，步行介导了邻里活动支持度与体重指数之间的关联。
Walking mediates associations between neighborhood activity supportiveness and BMI in the Women's Health Initiative San Diego cohort.
作者信息
Carlson Jordan A, Remigio-Baker Rosemay A, Anderson Cheryl A M, Adams Marc A, Norman Gregory J, Kerr Jacqueline, Criqui Michael H, Allison Matthew
机构信息
Children's Mercy Hospital, 610 E. 22nd St., Kansas City, MO 64108, USA.
University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA.
出版信息
Health Place. 2016 Mar;38:48-53. doi: 10.1016/j.healthplace.2016.01.001. Epub 2016 Feb 1.
OBJECTIVES
To investigate whether walking mediates neighborhood built environment associations with weight status in middle- and older-aged women.
METHODS
Participants (N=5085; mean age=64 ± 7.7; 75.4% White non-Hispanic) were from the Women's Health Initiative San Diego cohort baseline visits. Body mass index (BMI) and waist circumference were measured objectively. Walking was assessed via survey. The geographic information system (GIS)-based home neighborhood activity supportiveness index included residential density, street connectivity, land use mix, and number of parks.
RESULTS
BMI was 0.22 units higher and the odds ratio for being obese (vs. normal or overweight) was 8% higher for every standard deviation decrease in neighborhood activity supportiveness. Walking partially mediated these associations (22-23% attenuation). Findings were less robust for waist circumference.
CONCLUSIONS
Findings suggest women who lived in activity-supportive neighborhoods had a lower BMI than their counterparts, in part because they walked more. Improving neighborhood activity supportiveness has population-level implications for improving weight status and health.
目的
探讨步行是否介导中老年女性的社区建成环境与体重状况之间的关联。
方法
参与者（N = 5085；平均年龄 = 64 ± 7.7；75.4%为非西班牙裔白人）来自女性健康倡议圣地亚哥队列的基线访视。客观测量体重指数（BMI）和腰围。通过调查评估步行情况。基于地理信息系统（GIS）的家庭邻里活动支持指数包括居住密度、街道连通性、土地利用混合情况和公园数量。
结果
邻里活动支持性每降低一个标准差，BMI就会高出0.22个单位，肥胖（相对于正常或超重）的比值比会高出8%。步行部分介导了这些关联（减弱22 - 23%）。腰围方面的研究结果不太显著。
结论
研究结果表明，居住在活动支持性社区的女性BMI低于其他女性，部分原因是她们步行更多。改善邻里活动支持性对改善体重状况和健康具有人群层面的意义。
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