Assessing the Impact of School-Based Nutrition Programs on Childhood Obesity in Urban Elementary Schools

Thesis Abstract

Rising rates of childhood obesity in urban settings pose a significant public health challenge, prompting the implementation of school-based nutrition programs aimed at promoting healthier eating habits among elementary school students. This study seeks to evaluate the effectiveness of these nutrition interventions in reducing obesity prevalence and improving dietary behaviors within urban elementary schools. The primary aim is to assess the impact of structured school-based nutrition programs on body mass index (BMI) and nutritional knowledge among students aged 6-12 years. Specific objectives include determining changes in students’ BMI before and after program implementation, evaluating shifts in dietary intake patterns, and exploring teachers’ and parents’ perceptions of program efficacy. Employing a mixed-methods research design, the study integrates quantitative and qualitative data collection approaches to provide a comprehensive analysis. The quantitative component adopts a quasi-experimental pretest-posttest design involving a sample of 600 students from six public urban elementary schools, with three schools assigned as intervention sites implementing the nutrition program and three as control sites continuing usual curricula. Stratified random sampling ensures representative participation across different grade levels and socioeconomic backgrounds. Data collection instruments include standardized anthropometric measurements for BMI calculation, validated dietary recall questionnaires, and structured questionnaires assessing nutritional knowledge. The qualitative component employs semi-structured interviews with 15 teachers and 20 parents from intervention schools to capture perceptions, facilitators, and barriers related to program implementation. Data analysis for the quantitative data involves descriptive statistics, paired t-tests to assess BMI and dietary changes within groups, and ANCOVA to compare post-intervention outcomes between intervention and control groups, controlling for baseline differences. Multiple regression analysis will identify predictors of BMI change, considering variables such as age, gender, and socioeconomic status. The qualitative data will undergo thematic analysis to extract key themes regarding stakeholders’ experiences and views on program delivery and impact. Expected findings anticipate a statistically significant reduction in BMI and improvement in dietary behaviors among students participating in the nutrition programs compared to controls. The study also expects to reveal enhanced nutritional knowledge among intervention participants and positive perceptions from teachers and parents regarding program effectiveness. These findings are projected to substantiate that school-based nutrition interventions can serve as effective strategies in combating childhood obesity in urban environments. This research contributes to existing knowledge by providing empirical evidence on the impact of structured nutrition programs within the context of urban elementary schools, offering insights into best practices for program design and stakeholder engagement. Moreover, it extends application of the Social Cognitive Theory by examining how environmental and individual factors influence dietary behavior change among children. The study’s insights are intended to inform policymakers, school administrators, and public health practitioners seeking scalable interventions for childhood obesity. Concluding, the study recommends the integration of comprehensive nutrition education within school curricula, increased parental involvement, and ongoing monitoring and evaluation of program outcomes. Future research should explore longitudinal impacts and the role of community partnerships in sustaining nutritional improvements, thus ensuring long-term health benefits for urban children.