“Familie+ - Zusammen gesund leben in Familie und Schule” is a project that focuses on the question how families could be reached and integrated in intervention programs in the context of preventing overweight and obesity in primary school aged children. The aim is to change energy-balance related behaviors (e.g. physical activity, sedentary behavior, dietary intake, and sleep) by using a participatory approach to develop, implement and evaluate behavior change strategies in schools and families.…