Fund for Scientific Research Flanders (FWO), Ghent University, Ghent, Belgium.
Am J Prev Med. 2010 Jul;39(1):25-32. doi: 10.1016/j.amepre.2010.03.004.
Sedentary behavior (too much sitting) has deleterious health consequences that are distinct from lack of physical activity (too little exercise).
This study aimed to examine the associations of neighborhood walkability and sociodemographic factors with adults' self-reported and objectively assessed sedentary time.
This Belgian cross-sectional study was conducted between May 2007 and September 2008. Twenty-four neighborhoods were stratified on GIS-based walkability and neighborhood SES. In all, 1200 adults (aged 20-65 years; 50 per neighborhood; 42.7 [SD=12.6] years; 47.9% men) completed a sociodemographic survey and the International Physical Activity Questionnaire. They also wore an accelerometer for 7 days: Sedentary time was identified as accelerometer counts of less than 100 per minute. Statistical analyses were performed in 2009, using multilevel regression models, adjusted for physical activity levels and individual SES.
Residents of high-walkable neighborhoods reported more sitting time than those of low-walkable neighborhoods (439.8 vs 403.4 minutes/day of daily sitting time, p<0.05). Living in high-walkable versus low-walkable neighborhoods was also associated with 2.9% more accelerometer-measured overall sedentary time (p<0.001). Being male, younger, unemployed, more highly educated, having a white-collar job (analysis for employed adults only), and living without children were all significantly associated with more sitting time.
Contrary to expectations, living in a high-walkable neighborhood was associated with higher levels of sedentary time. If future studies in other contexts confirm these associations, environmental and policy innovations aiming to promote physical activity may need to address the potential negative health impact of sedentary behavior.
久坐行为（坐得太多）对健康有不良影响，与缺乏身体活动（运动太少）不同。
本研究旨在调查邻里可步行性和社会人口因素与成年人自我报告和客观评估的久坐时间之间的关联。
这是一项在 2007 年 5 月至 2008 年 9 月期间进行的比利时横断面研究。根据 GIS 基础上的可步行性和邻里社会经济地位对 24 个邻里进行分层。共有 1200 名成年人（年龄 20-65 岁；每个邻里 50 人；平均年龄 42.7[SD=12.6]岁；47.9%为男性）完成了社会人口学调查和国际体力活动问卷。他们还佩戴了 7 天的加速度计：将加速度计计数值小于 100 次/分钟的时间识别为久坐时间。2009 年使用多水平回归模型进行了统计分析，调整了体力活动水平和个体社会经济地位。
高可步行性邻里的居民报告的久坐时间多于低可步行性邻里（每天坐着的时间分别为 439.8 分钟和 403.4 分钟，p<0.05）。与低可步行性邻里相比，居住在高可步行性邻里与通过加速度计测量的总体久坐时间增加 2.9%（p<0.001）相关。男性、年龄较小、失业、受教育程度较高、从事白领工作（仅针对就业成年人的分析）以及没有孩子的人，与久坐时间增加显著相关。
与预期相反，居住在高可步行性的邻里与更高水平的久坐时间相关。如果未来在其他环境下的研究证实了这些关联，旨在促进身体活动的环境和政策创新可能需要解决久坐行为对健康的潜在负面影响。
