Promoting ball-based play and sports participation for preschool children.

Introduction: This study investigates the effects of a preschool intervention, Methods: The intervention was developed to integrate ball-based play into daily preschool routines and contained collaboration between preschools and local sports clubs to foster ball-based sports participation. The non-randomized wait-list control design included children from eight preschools whose parents completed a questionnaire assessing child-level outcomes and background factors. Results: One of the assessed outcomes was the newly developed Ball Play Index capturing three key elements of ball play: frequency, enjoyment and skill level. Baseline data revealed substantial variation across the eight participating preschool settings. For instance, participation in ball-based sports ranged from 14% to 30%, while participation in any sport varied from 31% to 80%. Cross-sectional analyses of 429 responses identified associations between sports participation, the Ball Play Index, and factors such as gender, disability status, and parental background. Impact analyses ( Conclusion: Future initiatives should account for both the readiness of sports clubs and the existing activity levels within the target group. A broader approach that includes diverse sports may help overcome capacity challenges, and ensuring equitable access remains essential. Finally, future efforts may benefit from involving parents more actively in the process.