Retrieval-induced forgetting in children and adolescents with and without obesity.

BACKGROUND/OBJECTIVES: Previous research indicates that youth with obesity exhibit deficits in executive functioning (EF), which often take the form of impaired response inhibition. One aspect of EF not previously studied in obesity is the adaptive process known as retrieval-induced forgetting (RIF), the suppression/inhibition of intrusive or non-target items by the retrieval of specific items from memory. The present study investigated if child or adolescent obesity disrupts the ability to inhibit retrieval of intrusive memories. SUBJECTS/METHODS: We compared the manifestation of RIF in children (ages 8-12) and adolescents (ages 13-18) as a function of their weight status and sex. We also evaluated the effects of these variables on simple recall of items from episodic memory under conditions where competition from intrusive items was reduced. RESULTS: Children with obesity did not demonstrate significant RIF, whereas RIF was exhibited by preteens without obesity and by teenage participants with- and without obesity (Weight Status × Age Group interaction p = 0.028). This pattern of results did not differ as a function of sex for either age group. No differences in episodic memory were found. Additional analyses using Age as continuous covariate (and not as a nominal group) comparing participants who exhibited RIF with those who did not, found that the no RIF group consumed fast-food meals more frequently (p = 0.024) and had higher percentages of total body adiposity and android fat compared to the RIF group (p's < 0.05). CONCLUSIONS: The findings expand what is known about the effects of childhood obesity on cognitive functioning, identify impaired RIF with specific behavioral and dietary factors and increased adiposity, and suggest the possibility that impairments in the ability to inhibit intrusive memories of food and eating may contribute to poor early-life weight control.

Healthy Schoolhouse 2.0 Health Promotion Intervention to Reduce Childhood Obesity in Washington, DC: A Feasibility Study.

Childhood obesity prevalence trends involve complex societal and environmental factors as well as individual behaviors. The Healthy Schoolhouse 2.0 program seeks to improve nutrition literacy among elementary school students through an equity-focused intervention that supports the health of students, teachers, and the community. This five-year quasi-experimental study follows a baseline-post-test design. Research activities examine the feasibility and effectiveness of a professional development series in the first program year to improve teachers' self-efficacy and students' nutrition literacy. Four elementary schools in Washington, DC (two intervention, two comparison) enrolled in the program (N = 1302 students). Demographic and baseline assessments were similar between schools. Teacher participation in professional development sessions was positively correlated with implementing nutrition lessons (r = 0.6, p < 0.001, n = 55). Post-test student nutrition knowledge scores (W = 39985, p < 0.010, n = 659) and knowledge score changes (W = 17064, p < 0.010, n = 448) were higher among students in the intervention schools. Students who received three nutrition lessons had higher post knowledge scores than students who received fewer lessons (H(2) =22.75, p < 0.001, n = 659). Engaging teachers to implement nutrition curricula may support sustainable obesity prevention efforts in the elementary school environment.

Design and Implementation of a 5-Year School-Based Nutrition Education Intervention.

OBJECTIVE: To describe the research methods of a multicomponent nutrition education program empowering teachers to improve nutrition literacy and prevent obesity among elementary school students. DESIGN: Prospective 5-year study following a pre-post intervention design. SETTING: Four elementary schools in a high-needs area in Washington, DC: 2 intervention and 2 comparison schools. PARTICIPANTS: Approximately 100 teachers (25/school) and 800 students (200/school) enrolled over the study period. INTERVENTION: Healthy Schoolhouse 2.0 will engage teachers as agents of change by designing, implementing, and evaluating a structured professional development program to support the integration of nutrition concepts in the classroom. MAIN OUTCOME MEASURES: Change in pre-post survey assessment of students' nutrition literacy, attitudes, and intent; change in teachers' self-efficacy toward teaching nutrition; fruit and vegetable consumption data collected 6 times/y in the cafeteria. ANALYSIS: Process evaluation throughout the study to document implementation and challenges. Multilevel mixed modeling will be used to determine the impact of the intervention.

Measuring the Implementation of a School Wellness Policy.

BACKGROUND: With the rise in childhood obesity, school policies related to nutrition and physical activity have been written and implemented. In this paper, we present a model to evaluate the degree to which state legislation for school health policies are implemented at the school level. METHODS: Using Washington, DC's Healthy Schools Act (HSA) and a self-report measure of the implementation of the HSA, we illustrate the process of developing a composite score that can be used to measure compliance with the provisions of the law. RESULTS: We calculated elementary and middle school composite scores based on the provisions within the HSA. Schools have been successful in implementing nutrition provisions; however, more resources are needed for schools to achieve the minutes of health and physical education. We found statistically significant differences between public charter and traditional public schools on the implementation of the provisions of the HSA. CONCLUSIONS: Understanding how schools are complying with school wellness policies is a next step to determining where additional resources or support are needed in order to support school-wide adoption of healthy policies.

Translating school health research to policy. School outcomes related to the health environment and changes in mathematics achievement.

This paper describes an exploration of the relationship between mathematic achievement and the school health environment relative to policy-driven changes in the school setting, specifically with regard to physical education/physical activity. Using school-level data, the authors seek to understand the relationship between mathematics achievement and the school health environment and physical education minutes. This work provides a description of the aspects of the school health environment, an exploration of the interrelationships between school health and student achievement, and an assessment of the effects of the school health policy and practice on student performance and health status. Based on these findings, we identify additional research necessary to describe the relationship between obesity and learning in children.