TV viewing and physical activity are independently associated with metabolic risk in children: the European Youth Heart Study
Brage S, Andersen LB, anderssen-sa Anderssen SA, Ekelund U, Froberg K, Riddoch C, Sardinha LB, and Harro M
PLoS Medicine. Dec 2006
(DOI : 10.1371/journal.pmed.0030488)
Effect of combined movement and heart rate monitor placement on physical activity estimates during treadmill locomotion and free-living.
Brage S, Wareham NJ, Ekelund U, Brage N, Luan J, Franks PW, and Froberg K
International Journal of Epidemiology. Dec 2005
(DOI : 10.1007/s00421-005-0112-6)