Bunn, ChristopherPalmer, VictoriaChng, Nai RuiAndersen, EivindGray, Cindy MHunt, KateJelsma, Judith G.M.Morgan, HeatherNijhuis-van der Sanden, MariaPereira, Hugo V.Philpott, MatthewPhilpott, MatthewRoberts, Glyn CRooksby, JohnRøynesdal, Øystein BSilva, Marlene N.Sørensen, MaritTeixeira, Pedro Jvan Achterberg, Theovan de Glind, Irenevan Mechelen, WillemVan Nassau, Femkevan der Ploeg, Hidde P.Wyke, Sally2023-03-202023-03-202023-03-20Bunn, C, Palmer, V, Chng, N R, Andersen, E, Gray, C M, Hunt, K, Jelsma, J G M, Morgan, H, Nijhuis-van der Sanden, M, Pereira, H V, Philpott, M, Philpott, M, Roberts, G C, Rooksby, J, Røynesdal, Ø B, Silva, M N, Sørensen, M, Teixeira, P J, van Achterberg, T, van de Glind, I, van Mechelen, W, Van Nassau, F, van der Ploeg, H P & Wyke, S 2023, 'How European Fans in Training (EuroFIT), a lifestyle change program for men delivered in football clubs, achieved its effect : a mixed methods process evaluation embedded in a randomised controlled trial', BMC Public Health, vol. 23, 526. https://doi.org/10.1186/s12889-023-15419-y1471-2458ORCID: /0000-0002-6118-8911/work/131351067https://hdl.handle.net/2164/20318Funding This project has received funding from the European Union’s Seventh Framework Program for research, technological development, and demonstration under grant agreement number 602170. The Health Services Research Unit, University of Aberdeen, receives core funding from the Chief Scientist Office of the Scottish Government Health Directorates. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Acknowledgements We are grateful to participants who took part in the research, coaches and club managers at fifteen football clubs and UEFA’s Football and Social Responsibility department for supporting the proposal at bidding stage. Ciaran Clissman of Pintail Ltd managed the project and provided invaluable editorial input into the funding application and delivery of the program. Prof Nanette Mutrie was substantially involved in the development of the EuroFIT program. Dr Lisa Macauley administered the UK data collection in the UK and Alan Pollok supported some UK data collection. Dr Mattias Rost and Prof Mathew Chalmers were substantially involved in the development of MatchFIT and Drs Douglas Maxwell and Nikos Mourselas of PAL Technologies in the technical development of the SitFIT. Views and opinions expressed are those of the authors and do not necessarily reflect those of the European Union.241888457engSDG 3 - Good Health and Well-beingProcess evaluationPhysical ActivitySedentary TimeFootballInterventionMixed methodsRA0421 Public health. Hygiene. Preventive MedicineSupplementary InformationRA0421Journal article10.1186/s12889-023-15419-y23