Promoting Healthy Lifestyles in Early Childhood at School with the 0-6 EpPOI Project: Efficacy on Motor Skills and Mediterranean Diet Adherence

Background: Childhood obesity is a global health concern. Early development of fundamental movement skills (FMS) and adherence to the Mediterranean diet (MD) are key modifiable factors for prevention. This study assessed the effectiveness of a multidisciplinary, school-based intervention for childhood obesity prevention. Methods: Children aged 3–5 years from a preschool in Messina, Italy, participated in a 9-month intervention integrating nutritional education and physical activity. FMS were evaluated using the MOBAK test. Anthropometric measurements and MD adherence (through the Kid-Med questionnaire) were collected. Caregivers completed an online survey reporting lifestyle changes. Results: Significant improvements were observed in FMS: object control (score 1) increased from 2.67 ± 1.78 to 4.28 ± 1.82, locomotor skills (score 2) from 4.69 ± 1.96 to 5.83, 5.83 ± 1.70, and total MOBAK score (score 3) from 7.35 ± 3.09 to 10.11± 2.94. (p < 0.001 for all). Kid-Med scores significantly improved from (3.79 ± 2.31 vs. 5.03 ± 2.69) (p = 0.0027), indicating enhanced MD adherence. Post-intervention, adherence was classified as poor (27.4%), moderate (53.2%), and optimal (19.4%). Although only a minority of parents reported lifestyle changes, over 50% noted increased fruit and vegetable intake in their children. Males showed higher FMS scores and waist circumference compared to females. Conclusions: A school-based multidisciplinary intervention significantly improved motor competence and dietary habits in preschool children. These findings underscore the importance of early, integrated strategies involving families and educators to support healthy development and prevent childhood obesity.