Conclusion
CHILDHOOD OBESITY
This unique study examined the components (target behaviors, delivery features and BCTs) of INFANT, an early life nutrition and movement behavioral intervention from RCT to scale-up. Findings show that while the scaled-up version of the INFANT intervention had modifications to target behaviors and delivery features for scalability, the techniques identified to change behaviors were largely consistent. Other behavior change interventions enacting scale-up, particularly for early childhood obesity prevention, should consider undertaking similar research to increase understanding and transparency of what and why changes were made to a scaled-up intervention and the active ingredients for changing behavior. Scale-up of early childhood nutrition and movement behavioral interventions is critical for achieving population-level health benefits; this work presents INFANT as an example and lays the foundation for investigating scale-up implementation-effectiveness outcomes.