BACKGROUND Over 60% of Latinas report not meeting moderate to vigorous physical activity (MVPA) guidelines of 150 minutes/week. Ecological models of health posit that intrapersonal and environmental factors interact with one another to influence physical activity. Understanding their interactions in relation to transportation behaviors may inform interventions to increase Latinas' physical activity. PURPOSE To 1) objectively estimate walking and vehicle time in Latinas, 2) examine the association of, and interactions between, intrapersonal (socio-demographics and weight status) and neighborhood environmental correlates with objective daily walking and vehicle time. METHODS A subsample of Latinas (n=87) participating in a health intervention wore an accelerometer and GPS device for at least two valid wear days at baseline. The Personal Activity Location and Measurement System (PALMS) software estimated daily walking and vehicle time. Participants' anthropometrics were measured, and they completed a survey assessing socio-demographic characteristics and perceived neighborhood environment. Generalized linear mixed models examined main effects and interactions of four intrapersonal and five environmental factors on daily walking and vehicle time. RESULTS On average, participants walked 16 min/day and spent 69 min/day in a vehicle. Overweight/obesity was negatively associated with walking time (p=.04) and positively associated with vehicle time (p=0.01). Household income was positively associated with vehicle time (p=0.02). For daily walking time, two interactions were significant: perceived access to destinations X household income (p=0.01), and perceived sidewalk maintenance X acculturation (p= 0.01). For daily vehicle time, two interactions were significant: perceived access to destinations X weight status (p<0.001), and perceived safety from crime X education (p=0.01). CONCLUSION Latinas participated in relatively low walking time and high amounts of vehicle time. Findings suggest intrapersonal sub-group differences in the association of the neighborhood environment with walking and vehicle time. Improving neighborhood environments to promote walking and reduce vehicle time may help improve Latinas' overall physical activity.

中文翻译：

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邻里环境与拉丁裔日常步行和车辆时间之间关系的亚人群差异。

背景 超过 60% 的拉丁裔报告不符合每周 150 分钟的中度至剧烈体力活动 (MVPA) 指南。健康的生态模型假设人际因素和环境因素相互作用以影响身体活动。了解他们与交通行为相关的互动可能会为增加拉丁裔身体活动的干预措施提供信息。目的 1) 客观地估计拉丁美洲人的步行和车辆时间，2) 检查个人（社会人口统计和体重状况）和邻里环境与客观的每日步行和车辆时间之间的关联和相互作用。方法 参与健康干预的拉丁裔子样本 (n=87) 在基线时佩戴加速度计和 GPS 设备至少两个有效佩戴日。个人活动定位和测量系统 (PALMS) 软件估计每日步行和车辆时间。参与者的人体测量学被测量，他们完成了一项评估社会人口特征和感知邻里环境的调查。广义线性混合模型检查了四个个人和五个环境因素对日常步行和车辆时间的主要影响和相互作用。结果平均而言，参与者每天步行 16 分钟，每天在车上花费 69 分钟。超重/肥胖与步行时间呈负相关（p=.04），与车辆时间呈正相关（p=0.01）。家庭收入与车辆使用时间呈正相关（p=0.02）。对于每日步行时间，有两个交互作用显着：感知到的目的地 X 家庭收入（p=0.01），和感知人行道维护 X 文化适应 (p = 0.01)。对于每天的车辆时间，有两个交互作用是显着的：感知到目的地 X 体重状态（p<0.001），以及感知犯罪 X 教育的安全性（p=0.01）。结论 拉丁美洲人的步行时间相对较短，而车辆时间较长。研究结果表明，在邻里环境与步行和车辆时间的关联中，个人亚组存在差异。改善邻里环境以促进步行和减少车辆时间可能有助于改善拉丁裔的整体身体活动。结论 拉丁美洲人的步行时间相对较短，而车辆时间较长。研究结果表明，在邻里环境与步行和车辆时间的关联中，个人亚组存在差异。改善邻里环境以促进步行和减少车辆时间可能有助于改善拉丁裔的整体身体活动。结论 拉丁美洲人的步行时间相对较短，而车辆时间较长。研究结果表明，在邻里环境与步行和车辆时间的关联中，个人亚组存在差异。改善邻里环境以促进步行和减少车辆时间可能有助于改善拉丁裔的整体身体活动。