International Journal of Behavioral Nutrition and Physical Activity International Journal of Behavioral Nutrition and Physical Activity Using the intervention mapping protocol to reduce European preschoolers' sedentary behavior, an application to the ToyBox-Study De Decker E. De Craemer M. De Bourdeaudhuij I. Verbestel V. Duvinage K. Iotova V. Grammatikaki E. Wildgruber A. Mouratidou T. Manios Y. Cardon G. 2014 research-article