RESUMEN
BACKGROUND: Health promotion (HP) is a complex, politically required task. The quality of implementation correlates with the effectiveness of health promotion initiatives. Successful implementation requires consideration of contextual conditions, which tend to be neglected in effectiveness studies. The aim is to identify success factors and obstacles to the implementation of HP in daycare centers and elementary schools based on 4 projects (Fit fürs Leben, fit für pisaâ¯+, Buchprojekt Sonnige Traurigtage, and The Daily Mile) in the Göttingen/South Lower Saxony region. The effects of the COVID-19 pandemic are assumed to be relevant for the implementation of these projects. METHODS: In 24 semi-structured interviews and 2 focus group discussions between August 2021 and March 2022, practitioners were asked about the implementation of the four projects in their areas of activity. After transcription, the interviews were analyzed using qualitative content analysis. The Consolidated Framework for Implementation Research supported the analysis. RESULTS: A total of 22 groups of factors were identified, on the basis of which 22 recommendations for action for GF implementation were formulated. Success factors at the individual and intervention level were at the forefront. The COVID-19 pandemic had a positive impact on the importance of HP, even though its feasibility was hampered. DISCUSSION: Numerous findings on the implementation of HP in children's living environments were confirmed by the study. The high significance of the individual factors is striking, which could be due to the survey of interviewees being familiar with the projects. The study results contribute to the further development of implementation strategies in HP.