Countrywide natural experiment links built environment to physical activity.

ABSTRACT: While physical activity is critical to human health, most people do not meet recommended guidelines^1,2. Built environments that are more walkable have the potential to increase activity across the population^3-8. However, previous studies on the built environment and physical activity have led to mixed findings, possibly due to methodological limitations such as small cohorts, over-reliance on self-reported measures and cross-sectional designs^5,7,9-11. Here we address these limitations by leveraging a large US cohort of smartphone users (N = 2,112,288) to evaluate within-person longitudinal behaviour changes that occurred over 248,266 days of objectively measured physical activity across 7,447 relocations among 1,609 US cities. By analysing the results of th

SUBMITTER: Althoff T 

PROVIDER: S-EPMC12422959 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature