Serrano Natalicio, Perez Lilian G, Carlson Jordan, Patrick Kevin, Kerr Jacqueline, Holub Christina, Arredondo Elva M
Institute for Behavioral and Community Health (IBACH), Graduate School of Public Health, San Diego State University, 9245 Sky Park Ct. San Diego, CA 92123, United States.
Joint Doctoral Program in Public Health, University of California, San Diego/San Diego State University, San Diego, CA 92182, USA.
J Transp Health. 2018 Mar;8:210-219. doi: 10.1016/j.jth.2018.01.006. Epub 2018 Jan 20.
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.
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.
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.
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).
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.
超过60%的拉丁裔女性报告称未达到每周150分钟的中等至剧烈身体活动（MVPA）指南要求。健康的生态模型认为，个人因素和环境因素相互作用，影响身体活动。了解它们与交通行为的相互作用可能有助于制定干预措施，以增加拉丁裔女性的身体活动。
1）客观估计拉丁裔女性的步行时间和乘车时间；2）研究个人因素（社会人口统计学和体重状况）与邻里环境因素与客观每日步行时间和乘车时间之间的关联及相互作用。
参与健康干预的拉丁裔女性子样本（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。个人活动位置和测量系统（PALMS）软件估计每日步行时间和乘车时间。测量参与者的人体测量学数据，并让她们完成一项调查，评估社会人口统计学特征和对邻里环境的感知。广义线性混合模型研究了四个个人因素和五个环境因素对每日步行时间和乘车时间的主要影响及相互作用。
平均而言，参与者每天步行16分钟，乘车69分钟。超重/肥胖与步行时间呈负相关（p = 0.04），与乘车时间呈正相关（p = 0.01）。家庭收入与乘车时间呈正相关（p = 0.02）。对于每日步行时间，有两个相互作用显著：感知到的目的地可达性×家庭收入（p = 0.01），以及感知到的人行道维护×文化适应程度（p = 0.01）。对于每日乘车时间，有两个相互作用显著：感知到 的目的地可达性×体重状况（p < 0.001），以及感知到的犯罪安全性×教育程度（p = 0.01）。
拉丁裔女性的步行时间相对较短，乘车时间较长。研究结果表明，在邻里环境与步行和乘车时间的关联方面存在个人亚组差异。改善邻里环境以促进步行并减少乘车时间可能有助于提高拉丁裔女性的总体身体活动水平。
