ITS Berkeley

The objectives of this study were to determine if neighborhood measures were associated with physical activity cross-sectionally during late pregnancy (27–30 weeks’ gestation), 3 months postpartum, and 12 months postpartum, and longitudinally with an increase in physical activity from late pregnancy to 12 months postpartum. Data are from the Pregnancy, Infection, and Nutrition (PIN3) and Postpartum Prospective Cohort Study. Dichotomized self-reported recreation and total physical activity hours/week were explored cross-sectionally at three time points, and as an increase over time....

Adult bicycle education classes are becoming an increasingly popular strategy to improve safety, mitigate congestion, and reach environmental goals. However, there is limited empirical research on the effectiveness of these classes among adults, and there are no studies evaluating the impacts of classroom-based education on this population. To address this gap in knowledge, a study was conducted evaluating the effectiveness of classroom-based adult bicycle education on delivering changes related to bicycling activity, self-perceptions while bicycling, knowledge of the bicycling rules of...

Latin America is one of the most urbanized areas of the world with nearly 80% of the population living in cities. Despite its benefits, this concentration of population in cities also increases exposures to pollutants related to urban activity. We examined levels and trends of PM2.5; patterns of population exposure by age, gender and socioeconomic status; disparities in exposure; and association of PM2.5 concentration with city characteristics and effects on mortality. Methods: Ground level annual PM2.5 from satellite-based observations was available in 2015 for 371 cities with greater...

Cycling advocates have recently argued that low-income and minority communities across the U.S. have disproportionately low access to bike lanes. To date, however, quantitative evidence of disparities in access to bike lanes has been limited to a small number of cities. We addressed this research gap by examining cross-sectional associations between bike lanes and sociodemographic characteristics at the block group level for 22 large U.S. cities (n = 21,843 block groups). Dependent variables included the presence (yes/no), coverage, connectivity, and proximity...