Van Dyck et al. BMC Public Health 2011, 11:668 http://www.biomedcentral.com/1471-2458/11/668 be most effective to reduce domestic screen time. If SB- reducing interventions targeting the most-relevant deter- minants were to be combined with strategies to increase PA and to develop healthy eating habits in the future, health effects could be reached in large populations. Acknowledgements This work was supported by Research Foundation Flanders (FWO) B/09731/ 01. NO’s contribution was supported by National Health and Medical Research Council of Australia (NHMRC) Program Grant #569940 and by NHMRC Senior Principal Research Fellowship #1003960. Author details 1Research Foundation Flanders (FWO), 1000 Brussels, Belgium. 2Department of Movement and Sports Sciences, Ghent University, 9000 Ghent, Belgium. 3Department of Human Biometrics and Biomechanics, Vrije Universiteit Brussels, 1000 Brussels, Belgium. 4Baker IDI Heart and Diabetes Institute, 8008 Melbourne, Australia. 5The University of Queensland, School of Population Health, QLD 4006 Brisbane, Australia. 6MRC Epidemiology Unit, Institute of Metabolic Science, CB2 0QQ Cambridge, UK. Authors’ contributions All authors contributed to the design of different parts of the study. DVD was responsible for data collection, performed the statistical analyses and drafted the manuscript. IDB, GC and BD helped to prepare the data collection, participated in the interpretation of the data, helped to draft the manuscript and revised the manuscript for important intellectual content. NO, KDC and KW revised the draft for important intellectual content. 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