International Journal of Behavioral Nutrition and Physical Activity International Journal of Behavioral Nutrition and Physical Activity Variations in accelerometry measured physical activity and sedentary time across Europe - harmonized analyses of 47, 497 children and adolescents Steene-Johannessen J. Hansen B.H. Dalene K.E. Kolle E. Northstone K. Møller N.C. Grøntved A. Wedderkopp N. Kriemler S. Page A.S. Puder J.J. Reilly J.J. Sardinha L.B. van Sluijs E.M.F. Andersen L.B. van der Ploeg H. Ahrens W. Flexeder C. Standl M. Shculz H. Moreno L.A. Universidad de Zaragoza De Henauw S. Michels N. Cardon G. Ortega F.B. Ruiz J. Aznar S. Fogelholm M. Decelis A. Olesen L.G. Hjorth M.F. Santos R. Vale S. Christiansen L.B. Jago R. Basterfield L. Owen C.G. Nightingale C.M. Eiben G. Polito A. Lauria F. Vanhelst J. Hadjigeorgiou C. Konstabel K. Molnár D. Sprengeler O. Manios Y. Harro J. Kafatos A. Anderssen S.A. Ekelund U. Determinants of, Diet, and, Physical, Activity, knowledge, hub, (DEDIPAC) International Children''s, Accelerometry, Database, (ICAD) IDEFICS Consortium HELENA Consortium 2020 research-article