Quasi-causal associations of physical activity and neighborhood walkability with body mass index: A twin study
Duncan GE, Cash SW, Horn EE, Turkheimer E Physical activity, neighborhood walkability, and body mass index (BMI, kg/m(2)) associations were tested using quasi-experimental twin methods. We hypothesized that physical activity and walkability were independently associated with BMI within twin pairs, controlling for genetic and environmental background shared between them. Data were from 6376 (64% female; 58% […]