Heritability of physical activity traits in Brazilian families: the Baependi Heart Study - Horimoto, Andréa R. V. R.; Giolo, Suely R.; Oliveira, Camila M.; Alvim, Rafael O.; Soler, Júlia Maria Pavan; Andrade, Mariza de; Krieger, José E.; Pereira, Alexandre C. (BMC Medical Genetics, 2011)