Validity and repeatability of the EPIC physical activity questionnaire: a validation study using accelerometers as an objective measure

Anne E Cust^1,2 , Ben J Smith^1,3 , Josephine Chau¹ , Hidde P van der Ploeg¹ , Christine M Friedenreich⁴ , Bruce K Armstrong⁵ and Adrian Bauman¹

¹Centre for Physical Activity and Health, School of Public Health, University of Sydney, Sydney, Australia

²Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, Australia

³Department of Health Sciences, Monash University, Melbourne, Australia

⁴Division of Population Health and Information, Alberta Cancer Board, Calgary, Alberta, Canada

⁵Sydney Cancer Centre, Royal Prince Alfred Hospital, and School of Public Health, University of Sydney, Sydney, Australia