https://www.taylorfrancis.com/chapters/edit/10.4324/9780429344732-2/global-physical-activity-andrea-ramirez-varela-bojana-klepac-pogrmilovic-pedro-hallal-catalina-del-portillo-%C5%BEeljko-pedi%C5%A1i%C4%87-harold-kohl-michael-pratt?context=ubx&refId=be0ef5a0-6de3-4f3f-869d-0af27c258513