Background: We aimed to examine whether the Healthy Children, Healthy Families, and Healthy Communities Program, consisting of multi-level strategies for obesity prevention tailoring the context of socioeconomically vulnerable children based on an ecological perspective, would be effective on improving their healthy lifestyle behaviors and obesity status. Methods: Participants were 104 children (and 59 parents) enrolled in public welfare systems in Seoul, South Korea. Based on a cluster-randomized controlled trial (no. ISRCTN11347525), eight centers were randomly assigned to intervention (four centers, 49 children, 27 parents) versus control groups (four centers, 55 children, 32 parents). Multi-level interventions of child-, parent-, and center-level strategies were conducted for 12 weeks. Children’s healthy lifestyle behaviors and obesity status were assessed as daily recommended levels and body mass index ≥85th percentile, respectively. Parents’ parenting behaviors were measured by the Family Nutrition and Physical Activity scale. Results: Compared to the control group, the intervention group showed significant improvements in total composite scores of healthy-lifestyle behaviors—including 60-min of moderate physical activity—but not in obesity status among children. Moreover, the intervention group showed significant improvements in parenting behaviors among parents. Conclusion: The multi-level strategies for obesity prevention based on an ecological perspective may be effective for promoting healthy lifestyles among socioeconomically vulnerable children.

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This study identified predictors of appointment adherence and examined its impacts on improvements in metabolic risk factors in a free city-wide cardiovascular disease prevention program in Seoul, South Korea. Data of 8251 citizens with metabolic syndrome were used. Appointment adherers were defined as having 70% or higher adherence rates, that is, 3 or more visits. Of the 8251 citizens, 17.6% were appointment adherers. Appointment adherers were significantly more likely to be older, low-income earners, nonsmokers, and nonobese than appointment nonadherers. Moreover, appointment adherers, compared with nonadherers, showed significant improvements in waist circumference, systolic blood pressure, and high-density lipoprotein cholesterol, but not in fasting glucose and triglycerides. Designing strategies for increasing appointment adherence to a free city-wide cardiovascular disease prevention program is essential to improve health outcomes, especially targeting population groups with young age, high-income, current smoking, or obesity.