Rodney Lyn

Continuous metabolic syndrome risk score, body mass index percentile, and leisure time physical activity in American children.

J Clin Hypertens(Greenwich). 2010;12:636–644.

Assessment of mealtime environments and nutrition practices in child care centers in Georgia.

BACKGROUND The amount of time children spend in child care each week has increased in recent years. The aim of this cross-sectional study was to describe the nutritional quality of foods served and the mealtime environment in 24 child care centers in Georgia. METHODS Data were collected between April 2010 and September 2010. Each child care center provided a sample 5-day menu (breakfast, lunch, and an afternoon snack) at baseline. Energy and nutrient contents of the menus were analyzed using NutriKids Menu Planning & Nutritional Analysis software (LunchByte Systems, Inc., Rochester, NY). Foods and beverages on the menus were compared to MyPlate food group standards for preschoolers. The child care environment was assessed in each center over 1 full day using the Environment and Policy Assessment and Observation instrument. RESULTS Menus met one half to two thirds of the recommended levels for energy, carbohydrate, protein, and vitamins A and C. However, the menus were high in saturated fat and sodium content and did not meet the recommendations for iron or fiber. The majority of the centers did not meet the recommendations for MyPlate food group standards for preschoolers. On the day of the observation, seven centers did not serve a vegetable and more than half of the centers (n=13) did not serve any whole grains. Nineteen centers served high-sugar and/or high-fat foods and 11 did not have visible water indoors. CONCLUSIONS This study identified determinants of the child care environment and nutritional characteristics of the combined meals and snacks offered to children. Findings from this study could inform child care centers how to provide healthier nutrition environments to preschool children.

Nutrition and Physical Activity in Child Care Centers: the Impact of a Wellness Policy Initiative on Environment and Policy Assessment and Observation Outcomes, 2011

Introduction The child care environment has emerged as an ideal setting in which to implement policies that promote healthy body weight of children. The purpose of this study was to assess the effect of a wellness policy and training program on the physical activity and nutrition environment in 24 child care centers in Georgia. Methods We used the Environment and Policy Assessment and Observation instrument to identify changes to foods served, staff behaviors, and physical activity opportunities. Observations were performed over 1 day, beginning with breakfast and concluding when the program ended for the day. Observations were conducted from February 2010 through April 2011 for a total of 2 observations in each center. Changes to nutrition and physical activity in centers were assessed on the basis of changes in scores related to the physical activity and nutrition environment documented in the observations. Paired t test analyses were performed to determine significance of changes. Results Significant improvements to total nutrition (P < .001) and physical activity scores (P < .001) were observed. Results indicate that centers significantly improved the physical activity environments of centers by enhancing active play (P = .02), the sedentary environment (P = .005), the portable environment (P = .002), staff behavior (P = .004), and physical activity training and education (P < .001). Significant improvements were found for the nutrition environment (P < .001), and nutrition training and education (P < .001). Conclusion Findings from this study suggest that implementing wellness policies and training caregivers in best practices for physical activity and nutrition can promote healthy weight for young children in child care settings.

Policy, systems, and environmental approaches for obesity prevention: A framework to inform local and state action

The public health literature has not fully explored the complexities of the policy process as they relate to public health practice and obesity prevention. We conducted a review of the literature across the policy science and public health fields, distilled key theories of policy making, and developed a framework to inform policy, systems, and environmental change efforts on obesity prevention. Beginning with a conceptual description, we focus on understanding three domains of the policy process: the problem domain, the policy domain, and the political domain. We identify key activities in the policy process including the following: (a) assessing the social and political environment; (b) engaging, educating and collaborating with key individuals and groups; (c) identifying and framing the problem; (d) utilizing available evidence; (e) identifying policy solutions; and (f) building public support and political will. The article provides policy change resources and case studies to guide and support local and state efforts around obesity prevention.

Validity of a Continuous Metabolic Risk Score as an Index for Modeling Metabolic Syndrome in Adolescents

PURPOSE Although continuous values of metabolic syndrome risk scores (cMetS) has been suggested for modeling the association between potential risk factors and metabolic syndrome (MetS) in young people, the construct validity of cMetS has not been sufficiently examined in a representative sample of youngsters. This study examined: (i) sex and race/ethnic-specific optimal cut-off points of cMetS that are associated with MetS and (ii) the construct validity of cMetS in 12- to 19-year old non-Hispanic white (NHW), non-Hispanic black (NHB), and Mexican-American (MA) subjects. METHODS Data (n = 1239) from the 2003 to 2004 and 2005 to 2006 National Health and Nutrition Examination Surveys were used in this study. cMetS was derived by aggregating age- and sex-standardized residuals of arterial blood pressure, triglycerides, glucose, waist circumference, and high-density lipoprotein cholesterol. Receiver operating characteristics analysis was used to determine the validity and performance of cMetS. The overall performance of the receiver operating characteristics test was quantified with area under the curve (AUC). RESULTS A graded relationship between cMetS and increased number of MetS factors was observed, with MetS factors of 3 or greater yielding the greatest cMetS. In male adolescents, the optimal cMetS cut-off points of cMetS that are associated with MetS in NHW, NHB, and MA were 2.01, 2.45, and 2.34, respectively. The corresponding values in female adolescents for NBW, NHB, and MA were 1.93, 2.12, and 2.23, respectively. The construct validity of cMetS for MetS was high (AUC ≥0.885; sensitivity ≥66.7; specificity ≥74.8%). CONCLUSIONS cMetS appears to be a suitable index for investigating the association between potential risk factors and MetS in adolescents. An understanding of the role of genetic and environmental risk factors in MetS in children may be enhanced with the use of cMetS.

Active living collaboratives in the United States: understanding characteristics, activities, and achievement of environmental and policy change.

Introduction Changing the built environment to promote active lifestyles requires collaboration among diverse sectors. Multisectoral collaborative groups in the United States promote active lifestyles through environmental and policy changes. The objective of this study was to examine the characteristics of these collaborative groups and the extent to which they have achieved change. Methods We identified, recruited, and interviewed the coordinators of active living collaborative groups in the United States. We used descriptive statistics to characterize groups by composition, stakeholder engagement, and the extent of environmental and policy change in 8 strategic areas. Results Fifty-nine groups from 22 states participated in the study. Most groups had a diverse set of partners and used a range of activities to advance their agendas. Most groups achieved some form of environmental or policy change. On average, groups reported working on 5 strategy areas; parks and recreation (86%) and Safe Routes to School (85%) were named most frequently. More than half of groups reported their environmental initiatives as either in progress or completed. Groups reported the most success in changing policy for public plazas, street improvements, streetscaping, and parks, open space, and recreation. Complete Streets policy and zoning ordinances were the most frequently cited policy types. Engaging in media activities and the policy-making process in addition to engaging stakeholders appear to influence success in achieving change. Conclusion Although many groups successfully worked on parks and recreation improvements, opportunities remain in other areas, including transit and infill and redevelopment. Additional time and resources may be critical to realizing these types of changes.

Commingling effect of gynoid and android fat patterns on cardiometabolic dysregulation in normal weight American adults

Aim:To determine the independent and commingling effect of android and gynoid percent fat (measured using Dual Energy X-Ray Absorptiometry) on cardiometabolic dysregulation in normal weight American adults.Methods:The 2005–2006 data (n=1802) from the United States National Health and Nutritional Examination Surveys (NHANES) were used in this study. Associations of android percent fat, gynoid percent fat and their joint occurrence with risks of cardiometabolic risk factors were estimated using prevalence odds ratios from logistic regression analyses.Results:Android-gynoid percent fat ratio was more highly correlated with cardiometabolic dysregulation than android percent fat, gynoid percent fat or body mass index. Commingling of android and gynoid adiposities was associated with much greater odds of cardiometabolic risk factors than either android or gynoid adiposities. Commingling of android and gynoid adiposities was associated with 1.75 (95% confidence interval (CI)=1.42–2.93), 1.48 (95% CI=1.32–1.91), 1.61 (95% CI=1.50–1.89), 3.56 (95% CI=2.91–4.11) and 1.86 (95% CI=1.49–1.96) increased odds of elevated glucose, elevated blood pressure, elevated low-density lipoprotein-cholesterol, elevated triglyceride and low high-density lipoprotein-cholesterol, respectively.Conclusions:Normal weight subjects who present with both android and gynoid adiposities should be advised of the associated health risks. Both android and gynoid fat accumulations should be considered in developing public health strategies for reducing cardiometabolic disease risk in normal weight subjects.

Municipal officials' perceived barriers to consideration of physical activity in community design decision making

CONTEXT Built environment-focused interventions and policies are recommended as sustainable approaches for promoting physical activity. Physical activity has not traditionally been considered in land use and transportation decision making. Effective collaboration with non-public health partners requires knowledge of their perceived barriers to such consideration. OBJECTIVE This analysis sought to (a) establish prevalence estimates of selected barriers to the consideration of physical activity in community design and layout decisions and (b) describe how barrier reporting by public health officials differs from other municipal officials among a wide range of job functions and departments in a geographically diverse sample. DESIGN A Web-based survey was conducted among municipal officials in 94 cities and towns with populations of at least 50 000 residents in 8 states. PARTICIPANTS A total of 453 municipal officials from public health, planning, transportation/public works, community and economic development, parks and recreation, city management, and municipal legislatures in 83 cities and towns responded to the survey. MAIN OUTCOME MEASURES Five barriers to consideration of physical activity in community design and layout were assessed. RESULTS The most common barriers included lack of political will (23.5%), limited staff (20.4%), and lack of collaboration across municipal departments (16.2%). Fewer participants reported opposition from the business community or residents as barriers. Public health department personnel were more likely to report the barriers of limited staff and lack of collaboration across municipal departments than other professionals. They were also more likely to report lack of political will than city managers or mayors and municipal legislators. CONCLUSIONS Barriers to increasing consideration of physical activity in decision making about community design and layout are encouragingly low. Implications for public health practice include the need to strategically increase political will despite public health staffing constraints and perceived lack of collaboration with relevant departments such as planning and public works/transportation.

Opportunity Meets Planning: An Assessment of the Physical Activity Emphasis in State Obesity-Related Plans

BACKGROUND In the United States, health promotion efforts often begin with state-level strategic plans. Many states have obesity, nutrition, or other topic-related plans that include physical activity (PA). The purpose of this study was to assess PA content in these state plans and make recommendations for future plan development. METHODS Publically available plans were collected in 2010. A content analysis tool was developed based on the United States National PA Plan and included contextual information and plan content. All plans were double coded for reliability and analyzed using SPSS. RESULTS Forty-three states had a statewide plan adopted between 2002 and 2010, none of which focused solely on PA. Over 80% of PA-specific strategies included policy or environmental changes. Most plans also included traditional strategies to increase PA (eg, physical education, worksite). Few plans included a specific focus on land use/community design, parks/recreation, or transportation. Less than one-half of plans included transportation or land use/community design partners in plan development. CONCLUSIONS Though the majority of states had a PA-oriented plan, comprehensiveness varied by state. Most plans lacked overarching objectives on the built environment, transportation, and land use/community design. Opportunities exist for plan revision and alignment with the National PA Plan sectors and strategies.

Statewide evaluation of local wellness policies in Georgia: an examination of policy compliance, policy strength, and associated factors.

OBJECTIVE To analyze relationships between demographic characteristics of Georgia school systems and: (1) compliance with the Child Nutrition and WIC Reauthorization Act (CNRA); and (2) strength of wellness policy goals in nutrition, physical activity, and other school-based activities. DESIGN Each local school district submitted their school-board-approved wellness policy to researchers. Each policy was reviewed and coded for compliance with CNRA and evaluated on the strength of its goals. SETTING Public school districts. PARTICIPANTS One hundred seventy-six of 180 Georgia public school systems participated. MAIN OUTCOME MEASURES Independent variables were demographic characteristics of Georgia school systems. Dependent variables were ratings from the policy evaluation instrument, grouped into composite indices to compare the strength (ie, ratings) of wellness policy goals. ANALYSIS Pearson correlation, cross-tabulation. RESULTS Significant positive associations were found between academic performance and: strength of overall wellness policy goals (P < .05), goals in nutrition education (P < .01), and other school-based activities (P < .01). Economic status of the student population was found to be positively associated with strength of nutrition education goals (P < .05). CONCLUSIONS AND IMPLICATIONS Districts with stronger academic performance had more comprehensive overall wellness policy goals and stronger goals in nutrition education and other school-based activities.