Ussery EN, et al. - Given that, the proportion of adults who report walking for either transportation or leisure has increased in recent years in the U.S., researchers assessed linear and quadratic trends in the prevalence and mean volume of walking for specific purposes. Participants were adults aged ≥18 years, participated in the 2005, 2010, and 2015 National Health Interview Survey. Findings demonstrated an increase in the prevalence of self-reported transportation and leisure walking during the last decade, and a decrease in the time spent walking. To increase both participation in walking and the amount of time spent walking, strategies that encourage walking for multiple purposes may present an opportunity.