Designing a childhood obesity preventive intervention using the multiphase optimization strategy: The Healthy Bodies...

Area of Science:

• Behavioral science
• Public health
• Pediatrics

Background:

• Childhood obesity prevention requires comprehensive, multilevel strategies.
• Existing programs may include ineffective components due to lack of systematic evaluation.
• The multiphase optimization strategy (MOST) offers a framework for optimizing behavioral interventions.

Purpose of the Study:

• To systematically test, select, and refine candidate components for a childhood obesity preventive intervention.
• To develop an optimized intervention for subsequent evaluation in a randomized controlled trial.
• To identify effective components for preventing childhood obesity in preschool settings.

Main Methods:

• A 2^4 full factorial design was employed to test four intervention components.
• Components focused on healthy eating, physical activity, self-regulation, and parental education.
• Intervention tested in ~1400 preschool children (ages 3-5) in Pennsylvania childcare programs.

Main Results:

• Four intervention components were developed: 3 classroom curricula and 1 web-based parent education module.
• Efficacy of individual and combined components in changing childhood obesity risk factors was evaluated.
• A plan for analyzing component contributions to the overall intervention was established.

Conclusions:

• An innovative approach to intervention design and evaluation can enhance long-term success.
• Findings have implications for childhood obesity research and other multifaceted preventive interventions.
• Optimized interventions developed through systematic component testing hold promise for public health.