Dietary Energy Density from Infancy to 5 Years: Results from NHANES 2009-2018.

BACKGROUND: Nutrient-dense foods, which are often low in energy density (ED), are recommended for a healthy diet in infants and children. How ED changes during the transition from a complementary diet in infancy to a conventional diet is unknown. OBJECTIVES: We aimed to describe the ED, the amount of energy (e.g., kcal) per weight (e.g., g), of food or beverage in infants and preschool-age children. It was hypothesized that ED would be higher among older children. METHODS: The ED of food (ED-Food Only) and of food and all beverages excluding human milk and infant formula (ED-Food and Beverages) of children's (6 mo-5 y) diets were examined overall and by age subgroups using data from the NHANES (2009-2018). Survey-adjusted linear regression followed by pairwise comparisons were used to compare ED across age subgroups. The percentages of calories consumed from low-, medium-, and high-ED foods across age subgroups were also examined. RESULTS: Mean ED-Food Only was 1.21 kcal/g (95% CI: 1.13, 1.29 kcal/g) among 6- to 11-mo-olds and 1.62 kcal/g (95% CI: 1.54, 1.69 kcal/g) among 12- to 17-mo-olds (P < 0.05). ED-Food and Beverages was higher across consecutive age subgroups from 0.99 kcal/g (95% CI: 0.96, 1.02 kcal/g) in 12-17 mo through 3 y (1.22 kcal/g; 95% CI: 1.19, 1.26 kcal/g; P < 0.05). Mean percentage of calories consumed from low-ED food (≤1.0 kcal/g) became lower with age from 6- to 11-mo-olds (47.3%; 95% CI: 44.3%, 50.4%) through 18- to 23-mo-olds (16.2%; 95% CI: 14.5%, 17.9%; P < 0.05). A greater percentage of calories was consumed from high-ED food (≥3.0 kcal/g) among 18- to 23-mo-olds (39.0%; 95% CI: 37.1%, 40.9%) than among 12- to 17-mo-olds (34.0%; 95% CI: 32.0%, 35.9%; P < 0.05). CONCLUSIONS: ED increased across age subgroups, driven by a decrease in the percentage of calories consumed from low-ED food and an increase in the percentage of calories consumed from high-ED food.

Dietary Patterns and Health: Insights From NESR Systematic Reviews to Inform the Dietary Guidelines for Americans.

This perspective article shares unique insights from the extensive experience of the US Department of Agriculture Nutrition Evidence Systematic Review branch in conducting systematic reviews on dietary patterns and health outcomes to inform the Dietary Guidelines for Americans. Methodological approaches for reviewing dietary patterns research are described, including approaches to operationalizing definitions and analyzing labeled dietary patterns. The review also describes techniques for synthesizing dietary patterns research across life stages in systematic reviews that inform food-based, federal dietary guidance. Current research activities and recommendations for how to improve or address gaps in dietary patterns research in the future are also discussed.

Use of the Nutrition Environment Measures Survey: A Systematic Review.

INTRODUCTION: The Nutrition Environment Measurement Survey (NEMS) measures were developed to assess the consumer food environment in stores and restaurants. NEMS tools have been widely used in research and adapted for diverse settings and populations in the 15 years since they were created. This systematic review examines the use and adaptations of these measures and what can be learned from published studies using NEMS tools. METHODS: A comprehensive search of bibliographic databases was conducted from 2007 to September 2021, supplemented by backward searches and communications with authors, to identify research articles using NEMS tools. Data on purpose, key findings, sample characteristics, NEMS characteristics, and modifications were abstracted. Articles were categorized on the basis of study goals, NEMS tool(s) used, variables measured, and common themes. RESULTS: A total of 190 articles from 18 countries were identified. Most studies (69.5%, n=123) used a modified version of NEMS tools. There were 23 intervention studies that used measures from NEMS tools or adaptations as outcomes, moderators, or process assessments. A total of 41% (n=78) of the articles evaluated inter-rater reliability, and 17% (n=33) evaluated test-retest reliability. DISCUSSION: NEMS measures have played an important role in the growth of research on food environments and have helped researchers to explore the relationships among healthy food availability, demographic variables, eating behaviors, health outcomes, and intervention-driven changes in food environments. The food environment is constantly changing, so NEMS measures should continue to evolve. Researchers should document data quality of modifications and use in new settings.

Feasibility of Implementing a Food Skills Intervention.

BACKGROUND: Food skills are defined as meal planning, preparation, shopping, budgeting, resourcefulness, and label reading/consumer awareness. To date, food skills have not been tested in intervention-based studies. OBJECTIVE: To evaluate the feasibility of implementing a food skills intervention. DESIGN: This was an 8-week prospective food skills intervention. Study measures were completed through questionnaires provided before the start of the intervention and after the intervention was completed. For questionnaires, the web platform REDCap was used. PARTICIPANTS AND SETTING: Thirty parents (aged 18 years or older) with at least one child (aged 2 to 12 years), attended weekly virtual intervention sessions via Zoom. The intervention took place from August to October 2020 with assessment measures collected within 2 months of the start and end date of the intervention. Participants were from the mid-Atlantic region of the United States INTERVENTION: A food skills intervention based on behavior modification strategies from the Social Cognitive Theory was implemented. Intervention goals included meal planning (six of seven dinner meals per week), meal plan implementation (at least four of six planned dinner meals), and always using a grocery list when shopping. MAIN OUTCOME MEASURES: Feasibility was evaluated based on parent attendance, number of self-monitoring booklets completed, adherence to goals, implementation fidelity, and qualitative responses to interviews. Change in food skills confidence and nutrition knowledge were also assessed. STATISTICAL ANALYSIS: Descriptive statistics and qualitative responses were used to describe feasibility. Paired t tests were used to evaluate change in food skills confidence and nutrition knowledge from baseline to 8 weeks. RESULTS: Parents attended a mean of 7.6 ± 1.0 (out of eight) sessions and completed a mean of 6.2 ± 1.7 (out of seven) self-monitoring booklets. Parents planned a mean of 6.1 ± 1.5 dinners per week and implemented a mean of 4.7 ± 1.6 of the six planned dinners, achieving the intervention goals. Of the mean 1.2 ± 0.6 trips/week to the grocery store reported, grocery lists were used a mean of 1.1 ± 0.6 times. Mean food skills confidence score increased significantly from baseline to 8 weeks (baseline = 86.5 ± 18.0; 8 weeks = 101.4 ± 15.3; P < 0.001). Mean nutrition knowledge score also significantly increased (baseline = 64.1 ± 7.2; 8 weeks = 69.1 ± 6.6; P < 0.001). Parents reported on a scale of zero ("easy") to 10 ("difficult") a mean difficulty rating of 2.4 ± 2.4 for meal planning, a mean of 2.1 ± 2.1 for meal plan implementation, and a mean of 1.0 ± 1.7 for always using a grocery shopping list indicating acceptability of goals. CONCLUSIONS: Feasibility of a food skills intervention was demonstrated by high session attendance, high numbers of self-monitoring booklets turned in, high achievement of intervention goals, parent acceptability, and high ratings of implementation fidelity. There was an increase in food skill confidence and nutrition knowledge. Future research should examine the efficacy of changing food skill behaviors on dietary intake.

More Frequent Food Shopping May Promote Fruit and Vegetable Intake: A Systematic Review.

BACKGROUND: Food shopping frequency may be an important modifiable factor related to increasing fruit and vegetable (FV) intake. Because of mixed findings of individual studies of shopping frequency, a systematic review is needed to examine findings across studies and store types. OBJECTIVE: To conduct a systematic review of articles examining the relationship between frequency of food shopping and FV intake including examination of participation in federal nutrition assistance programs on FV intake, if reported. METHODS: A search, guided by the Preferred Reported Items for Systematic Reviews and Metanalyses, using terms related to FV consumption and food shopping across 4 online databases, was conducted. Studies conducted in the US and published through October, 2020, included adults, and had a cross-sectional, longitudinal, cohort, or randomized study design were eligible for inclusion. RESULTS: Twenty-four articles were included. The majority of studies found at least 1 positive finding between the frequency of food shopping and FV intake, indicating that as the frequency of food shopping increased, FV intake increased. In studies with 100% participation in government/federal nutrition assistance programs, participation was associated with FV intake. Studies that included participation as a subset found participation not associated with FV intake. IMPLICATIONS FOR FUTURE RESEARCH AND PRACTICE: The frequency of shopping may be modifiable to increase FV intake. Experimental research is needed to test the directionality and causality of the relationship. Federal nutrition assistance programs may be a logical place to test the relationship through the adjustment of fund disbursements.