Quasi-causal associations of physical activity and neighborhood walkability with body mass index: a twin study.

Publication Type:

Journal Article


Preventive medicine, Volume 70, p.90-5 (2015)


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.