Knell Gregory, Durand Casey P, Shuval Kerem, Kohl Iii Harold W, Salvo Deborah, Sener Ipek, Gabriel Kelley Pettee
Department of Health Promotion and Behavioral Sciences, The University of Texas Health Science Center (UTHealth) at Houston School of Public Health, 7000 Fannin, #2528, Houston, TX 77030, United States.
Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center (UTHealth) at Houston School of Public Health in Austin, 1616 Guadalupe St, Suite 6.300, Austin, TX 78701, United States.
Prev Med Rep. 2017 Dec 23;9:55-61. doi: 10.1016/j.pmedr.2017.12.012. eCollection 2018 Mar.
Transportation-related physical activity can significantly increase daily total physical activity through active transportation or walking/biking to transit stops. The purpose of this study was to assess the relations between transit-use and self-reported and monitor-based physical activity levels in a predominantly minority population from the Houston Travel-Related Activity in Neighborhoods (TRAIN) Study. This was a cross-sectional analysis of 865 adults living in Houston, Texas between 2013 and 2015. The exposure variable was transit-use (non-users, occasional users, and primary users). Self-reported and accelerometer-determined physical activity were the outcomes of interest. Regression models adjusting for age, sex, race/ethnicity, and other covariates of interest were built to test the hypothesis that transit user status was directly associated with 1) minutes of moderate-intensity physical activity and 2) the prevalence of achieving the physical activity guidelines. The majority of participants were female, non-Hispanic black, and almost one-third had a high school education or less. After adjustment, primary transit-use was associated with 134.2 ( < 0.01) additional mean minutes per week of self-reported moderate-intensity transportation-related physical activity compared to non-users. Further, primary users had 7.3 (95% CI: 2.6-20.1) times the relative adjusted odds of meeting physical activity recommendations than non-users based on self-reported transportation-related physical activity. There were no statistically significant associations of transit-use with self-reported leisure-time or accelerometer-derived physical activity. Transit-use has the potential for a large public health impact due to its sustainability and scalability. Therefore, encouraging the use of transit as a means to promote physical activity should be examined in future studies.
与交通相关的身体活动可以通过主动出行或步行/骑自行车前往公交站点，显著增加每日总的身体活动量。本研究的目的是在休斯顿邻里出行相关活动（TRAIN）研究中的一个以少数族裔为主的人群中，评估公交使用情况与自我报告的以及基于监测的身体活动水平之间的关系。这是一项对2013年至2015年间居住在德克萨斯州休斯顿的865名成年人进行的横断面分析。暴露变量是公交使用情况（非使用者、偶尔使用者和主要使用者）。自我报告的和通过加速度计测定的身体活动是感兴趣的结果。构建了调整年龄、性别、种族/族裔以及其他感兴趣的协变量的回归模型，以检验公交使用者状态与以下两个方面直接相关的假设：1）中等强度身体活动的分钟数；2）达到身体活动指南的患病率。大多数参与者为女性、非西班牙裔黑人，近三分之一的人具有高中及以下学历。调整后，与非使用者相比，主要公交使用者自我报告的与交通相关的中等强度身体活动每周平均多134.2分钟（<0.01）。此外，基于自我报告的与交通相关的身体活动，主要使用者达到身体活动建议的相对调整后几率是非使用者的7.3倍（95%CI：2.6 - 20.1）。公交使用情况与自我报告的休闲时间身体活动或加速度计得出的身体活动之间没有统计学上的显著关联。由于其可持续性和可扩展性，公交使用有可能对公共卫生产生重大影响。因此，在未来的研究中应探讨鼓励将公交作为促进身体活动的一种方式。
