de Sa Eric, Ardern Chris I
School of Kinesiology and Health Science, York University , Toronto, Ontario , Canada.
PeerJ. 2014 Jul 1;2:e440. doi: 10.7717/peerj.440. eCollection 2014.
Objectives. To develop a walkability index specific to mixed rural/suburban areas, and to explore the relationship between walkability scores and leisure time physical activity. Methods. Respondents were geocoded with 500 m and 1,000 m buffer zones around each address. A walkability index was derived from intersections, residential density, and land-use mix according to built environment measures. Multivariable logistic regression models were used to quantify the association between the index and physical activity levels. Analyses used cross-sectional data from the 2007-2008 Canadian Community Health Survey (n = 1158; ≥18 y). Results. Respondents living in highly walkable 500 m buffer zones (upper quartiles of the walkability index) were more likely to walk or cycle for leisure than those living in low-walkable buffer zones (quartile 1). When a 1,000 m buffer zone was applied, respondents in more walkable neighbourhoods were more likely to walk or cycle for both leisure-time and transport-related purposes. Conclusion. Developing a walkability index can assist in exploring the associations between measures of the built environment and physical activity to prioritize neighborhood change.
目标。制定一个专门针对农村/郊区混合区域的步行适宜性指数，并探讨步行适宜性得分与休闲时间身体活动之间的关系。方法。根据每个地址周围500米和1000米的缓冲区对受访者进行地理编码。根据建成环境指标，从交叉路口、居住密度和土地利用混合情况得出步行适宜性指数。使用多变量逻辑回归模型来量化该指数与身体活动水平之间的关联。分析采用了2007 - 2008年加拿大社区健康调查的横断面数据（n = 1158；≥18岁）。结果。居住在步行适宜性高的500米缓冲区（步行适宜性指数的上四分位数）的受访者比居住在步行适宜性低的缓冲区（第一四分位数）的受访者更有可能为休闲而步行或骑自行车。当采用1000米缓冲区时，居住在步行适宜性更高社区的受访者更有可能为休闲和交通相关目的而步行或骑自行车。结论。制定步行适宜性指数有助于探索建成环境指标与身体活动之间的关联，以便优先考虑社区变革。
