The longitudinal relationship between community programmes and policies to prevent childhood obesity and BMI in children: the Healthy Communities Study

Neighborhood environments underpin screen time intervention success in children: Evidence from a study of greenspace and community programming across 130 US communities

The goal of this study was to understand how neighborhood greenspace access may support or hinder the effectiveness of community programs and policies (CPPs) aimed at reducing racial and ethnic inequities in screen time among 4598 US children. We found higher CPP intensity was significantly associated with fewer screen time behaviors in high greenspace neighborhoods, but not neighborhoods with low or moderate greenspace. Moreover, there were significant differences in greenspace access by neighborhood-level race and ethnicity. Implementing CPPs without regard for racial and ethnic greenspace inequities may be an underlying cause in the perpetuation of inequities in childhood screen time.

A scoping review of the role of policy in mitigating childhood obesity in underserved populations using the RE-AIM framework

BACKGROUND

Childhood obesity is an escalating crisis in the United States. Health policy may impact this epidemic which disproportionally affects underserved populations.

AIM

The aim was to use the reach, effectiveness, adoption, implementation, and maintenance (RE-AIM) framework to assess health policy impact on preventing or treating school-aged children (5 > 18 years) with obesity in underserved populations.

METHODS

A scoping review of 842 articles was conducted. Twenty-four articles met the inclusion criteria and underwent data extraction.

RESULTS

Twelve studies included subgroup analysis, with four suggesting an impact of policy on at-risk groups. None of the 24 studies fully applied the RE-AIM framework. Policies positively impacted childhood obesity in 12 studies across the sample.

LINKING EVIDENCE TO ACTION

Our review revealed inconsistent evidence for the effectiveness of policy on childhood obesity, perhaps due to the lack of focus on the social determinants of health. In addition, many studies did not evaluate the outcomes for underserved populations. Therefore, we propose more attention to social determinants in future legislation and evaluation of policy effectiveness on underserved populations. Findings identify an urgent need for the design, implementation, and evaluation of policies specifically directed to address the inequities of racism, social injustices, and social determinants of health that impact childhood obesity in the United States. Future work needs to identify who was reached by the policy, who benefitted from the policy, and how policies were implemented to address obesity-related health disparities. Nurses should advocate for the evaluation of childhood obesity policies, particularly in underserved populations, to determine effectiveness. Nurses, particularly those trained in population and community health and research, should advocate for policy research that considers inequities rather than controls for these variables. Multi-layered interventions can then be tailored to sub-populations and evaluated more effectively.

Scoping review of obesity interventions: Research frontiers and publication status

Obesity and overweight are significant global health issues, and numerous obesity intervention studies have been conducted. Summarizing current knowledge of interventions aims to inform researchers and policymakers to keep up-to-date with the latest scientific advancements and trends. In this review, we comprehensively retrieved and screened 4,541 studies on obesity intervention published between 2018 and 2022 in the Web of Science Core Collection, and objectively presented research frontiers using bibliometric analysis. The research frontiers of intervention are mainly focused on dietary, exercise, pharmacological interventions, bariatric surgery, environmental, and cognitive interventions. Time-restricted eating is the hottest research topic, followed by probiotics and Roux-en-Y gastric bypass. Gut microbiota is located in the "Basic and transversal themes" quadrant with a high centrality and low density, which has great development potentiality. Obesity intervention is becoming increasingly common,and we advocate for researchers to undertake more focused research endeavors that consider the specific characteristics of diverse populations or patients.

A Narrative Review of Public Health Interventions for Childhood Obesity

PURPOSE OF REVIEW

Public health interventions that intervene on macrolevel systems hold the promise of reducing childhood obesity at the population level through prevention. The purpose of this review is to highlight some of the recent and best scientific evidence related to public health interventions for the prevention of childhood obesity. We provide a narrative review of scientific evidence for six categories of public health interventions and their impact on childhood obesity: federal nutrition assistance programs, programs implemented in early care and education centers, interventions to support healthy nutrition and physical activity in schools, community-based programs and policies, labeling policies and marketing to children, and taxes on sugar sweetened beverages (SSB).

RECENT FINDINGS

Federal nutrition assistance programs have the strongest evidence to support reduction in childhood obesity and serve populations with the highest prevalence of childhood obesity. Other interventions including SSB taxes, community-wide interventions, and interventions at schools and early care and education centers also show significant improvements in child weight status. Overall public health interventions have strong evidence to support widespread implementation in service of reducing childhood obesity rates at the population level. To effectively address the recalcitrant childhood obesity epidemic, multi-pronged solutions are needed. The current evidence for public health obesity interventions is consistent with the paradigm that recognizes the importance of macrolevel systems influences on childhood obesity: interventions that are most effective intervene at macrolevels.

Body Mass Index Trajectories among the Healthy Communities Study Children: Racial/Ethnic and Socioeconomic Disparities in Childhood Obesity

The purpose of this study is to identify statistically distinguishable trajectories of childhood body mass index (BMI), an important indicator of developmental status of children, and to provide a summary description of demographic characteristics of children based on these distinctive trajectories. Using data from the Healthy Communities Study (HCS), a large longitudinal dataset with oversamples of Hispanic and Black children across 130 communities in the USA, a group-based trajectory analysis approach was used to estimate trajectories of children based on their BMI-z scores. The three most distinguishable BMI trajectory groups identified for the HCS children show no marked increase or decrease in standardized BMI over an age range of 2 to 11. Approximately 28.5% of children were in a trajectory group with consistently obese BMI-z scores for their sex and age. The patterns of BMI trajectory groups identified for boys and girls are similar, but BMI-z scores for boys tend to be slightly higher than those for girls. These BMI trajectories are characterized by racial/ethnic and socioeconomic status disparities. Hispanic and Black children were more likely to be in the obese trajectory group than White children. Children with parents having less education, or children from low family income level, were more likely to be in the obese trajectory group than counterpart children. The findings suggest that BMI disparities exist from the early years of childhood and persist across childhood, with higher BMI associated with Black and Hispanic children as well as those from low socioeconomic status backgrounds.

Food Environments Within and Outside of Schools Play a Critical Role in Curtailing the Rise in Obesity among School-Aged Children over Time

BACKGROUND

Sound evidence for effective community-based strategies is needed to curtail upward trends in childhood obesity in the United States (US).

OBJECTIVES

The aim of the study was to assess the association between school and community food environments and the prevalence of obesity over time.

METHODS

Data were collected from K-12 schools in 4 low-income New Jersey cities in the US. School-level obesity prevalence, calculated from nurse-measured heights and weights at 4 time points, was used as the outcome variable. Data on the school food environment (SFE) measured the healthfulness of school lunch and competitive food offerings annually. The community food environment (CFE), i.e., the number of different types of food outlets within 400 m of schools, was also captured annually. The count and presence of food outlets likely to be frequented by students were calculated. Exposure to composite environment profiles both within schools and in communities around schools was assessed using latent class analysis. Data from 106 schools were analyzed using multilevel linear regression.

RESULTS

The prevalence of obesity increased from 25% to 29% over the course of the study. Obesity rates were higher in schools that had nearby access to a greater number of limited-service restaurants and lower in schools with access to small grocery stores and upgraded convenience stores participating in initiatives to improve healthful offerings. Interaction analysis showed that schools that offered unhealthier, competitive foods experienced a faster increase in obesity rates over time. Examining composite food environment exposures, schools with unhealthy SFEs and high-density CFEs experienced a steeper time trend (β = 0.018, P < 0.001) in obesity prevalence compared to schools exposed to healthy SFE and low-density CFEs.

CONCLUSIONS

Food environments within and outside of schools are associated with differential obesity trajectories over time and can play an important role in curtailing the rising trends in childhood obesity.

Impact of ¡Míranos! on parent-reported home-based healthy energy balance-related behaviors in low-income Latino preschool children: a clustered randomized controlled trial

BACKGROUND

Widespread establishment of home-based healthy energy balance-related behaviors (EBRBs), like diet, physical activity, sedentary behavior, screen time, and sleep, among low-income preschool-aged children could curb the childhood obesity epidemic. We examined the effect of an 8-month multicomponent intervention on changes in EBRBs among preschool children enrolled in 12 Head Start centers.

METHODS

The Head Start (HS) centers were randomly assigned to one of three treatment arms: center-based intervention group (CBI), center-based plus home-based intervention group (CBI + HBI), or control. Before and following the intervention, parents of 3-year-olds enrolled in participating HS centers completed questionnaires about their child's at-home EBRBs. Adult-facilitated physical activity (PA) was measured by an index based on questions assessing the child's level of PA participation at home, with or facilitated by an adult. Fruit, vegetable, and added sugar intake were measured via a short food frequency questionnaire, and sleep time and screen time were measured using 7-day logs. A linear mixed effects model examined the intervention's effect on post-intervention changes in PA, intake of fruit, vegetable, and added sugar, sleep time, and screen time from baseline to post-intervention.

RESULTS

A total of 325 parents participated in the study (CBI n = 101; CBI + HBI n = 101; and control n = 123). Compared to control children, CBI and CBI + HBI parents reported decreases in children's intake of added sugar from sugar-sweetened beverages. Both CBI and CBI + HBI parents also reported smaller increases in children's average weekday screen time relative to controls. In addition, CBI + HBI parents reported CBI + HBI parents reported increases in children's adult-facilitated PA, fruit and vegetable intake, and daily sleep time during weekdays (excluding weekends) and the total week from baseline to post-intervention, while children in the CBI increased sleep time over the total week compared to the children in the control group.

CONCLUSIONS

Parent engagement strengthened the improvement in parent-reported EBRBs at home in young children participating in an evidence-based obesity prevention program in a childcare setting. Future studies should investigate equity-related contextual factors that influence the impact of obesity prevention in health-disparity populations.

TRIAL REGISTRATION

ClinicalTrials.gov, NCT03590834. Registered July 18, 2018, https://clinicaltrials.gov/ct2/show/NCT03590834.

Behavioral Interventions Contributing to Reducing Poverty and Inequities

Behavioral science has a long history of engaging in efforts to understand and address socially important issues. Poverty and inequities in health and development are among the most important and complex social issues facing the world today. With its Sustainable Development Goals (SDGs), the United Nations (2015) has focused attention and guidance on addressing key global challenges, including to "end poverty" (SDG 1), "ensure good health and well-being for all" (SDG3), and "reduce inequality within and among countries" (SDG 10). In this paper, we provide a framework and illustrative examples of contributions of behavioral science to these issues. We feature illustrative behavioral interventions at the individual, relationship, community, and societal levels. We highlight the diversity of issues, intervention methods, and settings reflected in applications of behavioral science. By joining methods from behavioral science, public health, and other disciplines-and the experiential knowledge of those most affected by inequities-behavioral methods can make significant contributions to collaborative efforts to assure health and well-being for all.

Advancing Health Equity Efforts to Reduce Obesity: Changing the Course

Population-based solutions are needed to stabilize and then reverse the continued upward trends in obesity prevalence in the US population and worldwide. This review focuses on the related, urgent issue of disparities in obesity prevalence affecting US racial/ethnic minority and other socially marginalized populations. The review provides background on these disparities from a health equity perspective and highlights evidence of progress in equity-focused obesity efforts. Five recommendations for advancing equity efforts are offered as potential approaches to build on progress to date: (a) give equity issues higher priority, (b) adopt a health equity lens, (c) strengthen approaches by using health equity frameworks, (d) broaden the types of policies considered, and (e) emphasize implementation science concepts and tools. Potential challenges and opportunities are identified, including the prospect of longer-term, transformative solutions that integrate global and national initiatives to address obesity, undernutrition, and climate change.

A Reflection on Community Research and Action as an Evolving Practice

Community research and action is an evolving field of practice with multiple influences. Its varied ways of knowing and doing reflect recombined elements from different disciplines, including behavioral science, community psychology, public health, and community development. This article offers a personal reflection based on my evolving practice over nearly 50 years. The focus is on three types of influence: (a) engaging with different communities, fields, and networks (e.g., discovering shared values, diverse methods); (b) building methods and capabilities for the work (e.g., methods for participatory research, tools for capacity building); and (c) partnering for collaborative research and action, locally and globally. This story highlights the nature of the field's evolution as an increasing variation in methods. Our evolving practice of community research and action-individually and collectively-emerges from the recombination of ideas and methods discovered through engagement in a wide variety of contexts.

Enhancing the Capacity of Local Health Departments to Address Birth Equity: The Institute for Equity in Birth Outcomes

INTRODUCTION

Significant and persistent racial and ethnic disparities exist related to infant mortality and other birth outcomes. Few models exist that aim to prepare organizations to implement essential features, such as community engagement or intervening on social determinants of health.

METHODS

Between 2013 and 2015, teams from seven local health departments participated in the Institute for Equity in Birth Outcomes (EI) with the goals of building capacity and implementing changes to address equity in birth outcomes. Four of the teams enrolled in the first cohort (2013-2015), and three enrolled in cohort two (2014-2015). To examine the EI effort and its impact on capacity and implementation of changes, two types of assessments were completed. Capacities of the teams in specific key areas were assessed using "Best Change Process" instruments at the completion of participation in the EI. Teams also documented on an ongoing basis implementation of interventions. The data were analyzed using descriptive statistics and Pearson Correlation tests.

RESULTS

Best Change Process capacity scores were higher in the first cohort than in the second and were highly correlated with implementation of changes (Pearson's Correlation = 0.838, p = 0.037). Collectively, the teams implemented about 32 new programs, policies, practices, and systems changes aimed at addressing equity in birth outcomes. Most interventions were based on scientific recommendations and local epidemiologic data.

DISCUSSION

The results of the study suggest the EI is a promising approach that may result in strong capacity and ability to implement interventions aimed at addressing equity in birth outcomes.

Household food insecurity and children's physical activity and sedentary behaviour in the United States: the Healthy Communities Study

Objective:

To examine associations between household food insecurity and children’s physical activity and sedentary behaviours.

Design:

Secondary analysis was conducted on the Healthy Communities Study, an observational study from 2013 to 2015. Household food insecurity was assessed by two items from the US Department of Agriculture’s 18-item US Household Food Security Survey Module. Physical activity was measured using the 7-d Physical Activity Behaviour Recall instrument. Data were analysed using multilevel statistical modelling.

Setting:

A total of 130 communities in the USA.

Participants:

In sum, 5138 US children aged 4–15 years.

Results:

No associations were found for the relationship between household food insecurity and child physical activity. A significant interaction between household food insecurity and child sex for sedentary behaviours was observed (P = 0·03).

Conclusions:

Additional research capturing a more detailed assessment of children’s experiences of food insecurity in relation to physical activity is warranted. Future studies may consider adopting qualitative study designs or utilising food insecurity measures that specifically target child-level food insecurity. Subsequent research may also seek to further explore sub-group analyses by sex.

Nutrition Provided to Infants in Licensed Childcare Centers and Homes: A Descriptive Study

BACKGROUND

Infant nutrition can influence development, eating behaviors and obesity risk. Nearly half of infants in the U.S. are in non-parental care where they consume much of their daily nutrition. Because little is known about the quality of infant nutrition in childcare, the study objective was to characterize the foods and beverages provided to infants in childcare in California.

METHODS

From a randomly selected sample of 2,400 licensed childcare in California, 736 responded to a 2016 survey; a subset of 297 cared for infants. Differences in 26 foods and 7 beverages provided between centers and homes, and by CACFP participation, were assessed using logistic regression models adjusted for CACFP participation and whether the site was a center or home, respectively.

RESULTS

Several differences between centers and homes were identified. One the day prior to the survey, more centers than homes ever provided cow's milk (25.1% vs 13.0%, p = 0.02) and whole grains (76.7% vs 62.9%, p = 0.03), and fewer centers than homes provided frozen treats (1.4% vs 10.3%, p = 0.003). When comparing difference by CACFP participation, fewer CACFP than non-CACFP sites usually provided breastmilk (32.6% vs 54.2%, p = 0.0004) and ever provided cow's milk (14.2% vs 37.1%, p < 0.0001). On the day prior to the survey, more CACFP than non-CACFP provided vegetables (91.0% vs 80.8%, p = 0.02), fruit (centers only) (97.2% vs 80.8%, p = 0.0003), and infant cereals (86.0% vs 61.2%, p < 0.0001). Fewer CACFP than non-CACFP provided sweetened yogurt (14.8% vs 36.7%, p < 0.0001).

CONCLUSIONS FOR PRACTICE

Childcare centers and CACFP participants tended to serve nutritious foods more than childcare homes and non-CACFP participants, respectively. Additional education and policies for childcare providers on appropriate foods and beverages for infants is recommended.

Two-year outcomes of Whānau Pakari, a multi-disciplinary assessment and intervention for children and adolescents with weight issues: A randomized clinical trial

OBJECTIVE

To determine whether 12-month BMI SDS reductions persisted at 24 months in a multi-disciplinary assessment and intervention program for children and adolescents with obesity, and whether secondary outcomes improved.

METHODS

This was a community-based 12-month RCT in Aotearoa/New Zealand. Eligible participants were aged 5 to 16 years with BMI ≥98th centile or BMI >91st centile with weight-related comorbidities. The low-intensity control received comprehensive home-based baseline assessments and advice, and 6-monthly follow-up. The high-intensity intervention received the same assessments and advice, but also weekly multidisciplinary sessions. Primary outcome was BMI SDS at 12 months. Secondary outcomes included cardiovascular and metabolic markers.

RESULTS

121 participants (60% of participants at baseline) were assessed at 24 months. BMI SDS reduction at 12 months was lost at 24 months in the modified intention-to-treat analysis [Control -0.03 (95%CI -0.14, 0.09) and Intervention -0.02 (-0.12, 0.08); P = .93]. However, sweet drink intake was reduced, water intake increased, and there were improvements in cardiovascular fitness in the high-intensity intervention. ≥70% attendance in the high-intensity intervention resulted in a persistent BMI SDS reduction of -0.22 after 24 months (95%CI -0.38, -0.06).

CONCLUSIONS

This trial was negative in terms of primary outcome at 24 months. However, high engagement led to sustained treatment effect, and there were multiple improvements in health measures.

Promoting Healthy Eating and Regular Physical Activity in Low-Income Families Through Family-Centered Programs: Implications for Practice

Research concerning children who are overweight has historically focused on providing services to the affected individuals, and limited attention has been paid to their families. Further, childhood obesity prevention and clinical programs continue to be impacted by contextual factors that increase the likelihood of attrition when targeting underserved populations. This paper provides data with relevance for interventions aimed at promoting healthy eating and regular physical activity with low-income families. Participants in a childhood obesity exploratory study provided recommendations to improve programs by reflecting on specific family and contextual issues related to children who are overweight and obese. Following a thematic analysis approach, we conducted semi-structured interviews with 16 low-income, single, female parents. All participants had, at the time of the interview, at least one overweight or obese child between the ages of 3 and 8. We report the critical role of context in the etiology and challenges of childhood obesity among disadvantaged populations. Findings also highlight the need for interventions to be culturally relevant and sensitive and to create opportunities to address and discuss participant experiences of discrimination, cultural factors, and family of origin influences. Interventions that do not address these contextual factors run the risk of being unsuccessful. Our findings are important for mental and public health professionals who are interested in the direct provision of services using a combination of social determinants of systemic perspectives.

The training and support needs of 22 programme directors of community-based childhood obesity interventions based on the EPODE approach: an online survey across programmes in 18 countries

BACKGROUND

Tackling childhood obesity is complex and requires a community-based approach implemented in multiple environments. It is known from literature that knowledgeable and skilled professionals are essential to implement such an approach successfully. The aim of the present study was to assess the need for training and support among a global network of programme directors implementing a Community-Based Childhood Obesity Intervention (CBCOI) based on the EPODE approach, in order to assist them in optimising the implementation process.

METHODS

An online survey was sent to 40 programme directors representing programmes implementing a CBCOI based on the EPODE approach. The survey consisted of statements on a 5-point Likert scale and multiple-choice questions about attitude towards and usefulness of training and support, and preferences for some predefined training types and training topics. In total, 22 programme directors responded to the survey (55% response rate). Data were analysed using descriptive statistics to describe the need for support in order to improve successful implementation.

RESULTS

Respondents strongly agreed that continually updating skills and learning how to make their programmes more effective and sustainable at the start and during the implementation was important. On-site training was preferred most at the commencement of a programme, while a 2-day training course was most valued during implementation. Monitoring, measuring and programme evaluation was identified as the most valuable training topic.

CONCLUSIONS

The results indicate a continuing and significant need for support and training among programme directors implementing a CBCOI. The findings give directions regarding topics and types of training and support in order to improve the implementation process.

Pediatric obesity: prevention is better than care

Pediatric obesity is one of the most relevant health issues of the last century. Obesity-related short and long-term consequences are responsible of a large amount of economic cost. In addition, the different therapeutic strategies, such as lifestyle correction, drug, and bariatric surgery have displayed low effectiveness. Considering this evidence, prevention appears to be more promising than treatment in contrasting obesity epidemic. In this review, we summarize obesity pathogenesis with the aim of highlight the main obesity risk factors that can be addressed as target of preventive interventions. Moreover, we report the evidence about effectiveness of different interventions targeting family, school, and community. A multiple-component intervention, addressing different targets and settings, might be desirable, however more studies are needed to confirm long-term efficacy and to direct policy interventions.

The obesity epidemic in the face of homeostatic body weight regulation: What went wrong and how can it be fixed?

Ever since the pioneering discoveries in the mid nineteen hundreds, the hypothalamus was recognized as a crucial component of the neural system controlling appetite and energy balance. The new wave of neuron-specific research tools has confirmed this key role of the hypothalamus and has delineated many other brain areas to be part of an expanded neural system sub serving these crucial functions. However, despite significant progress in defining this complex neural circuitry, many questions remain. One of the key questions is why the sophisticated body weight regulatory system is unable to prevent the rampant obesity epidemic we are experiencing. Why are pathologically obese body weight levels defended, and what can we do about it? Here we try to find answers to these questions by 1) reminding the reader that the neural controls of ingestive behavior have evolved in a demanding, restrictive environment and encompass much of the brain's major functions, far beyond the hypothalamus and brainstem, 2) hypothesizing that the current obesogenic environment impinges mainly on a critical pathway linking hypothalamic areas with the motivational and reward systems to produce uncompensated hyperphagia, and 3) proposing adequate strategies for prevention and treatment.

Association of Multisetting Community Programs and Policies With Child Body Mass Index: The Healthy Communities Study

Introduction

Expert opinion suggests that efforts to address childhood obesity should seek to transform the environments in which children operate. The objective of this study was to describe the extent to which multisetting programs and policies interact with community and child predictors and are associated with child body mass index (BMI) in the 130 US communities participating in the Healthy Communities Study.

Methods

For 2 years beginning in fall 2013, we collected data through key informant interviews on community programs and policies related to healthy weight among children that occurred in the 10 years before the interview. We characterized community programs and policies by intensity of efforts and the number of settings in which a program or policy was implemented. Child height and weight were measured during household data collection. We used multilevel modeling to examine associations of community programs and policies in multiple settings and child and community predictors with BMI z scores of children.

Results

The mean number of settings in which community policies and programs were implemented was 7.3 per community. Of 130 communities, 31 (23.8%) implemented community programs and policies in multiple settings. Higher-intensity community programs and policies were associated with lower BMI in communities that used multiple settings but not in communities that implemented programs and policies in few settings.

Conclusion

Efforts to prevent childhood obesity may be more effective when community programs and policies are both intensive and are implemented in multiple settings in which children live, learn, and play.

Community-level obesity prevention is not associated with dieting behaviours and weight dissatisfaction in children: The Healthy Communities Study

BACKGROUND

Within the context of high childhood obesity prevalence, there is a concern that community efforts intended to reduce childhood obesity may lead to unintended adverse outcomes.

OBJECTIVE

This analysis examined relationships between community programs, policies, and environmental changes (CPPs) for obesity prevention with unhealthy dieting behaviours and body weight satisfaction in children.

METHODS

Using the Healthy Communities Study 2013 to 2015 survey sample of 5138 US children aged 4 to 15 years old, multilevel models examined associations between standardized CPP intensity scores and child dieting behaviours and weight satisfaction, adjusting for community and child-level covariates and clustered study design.

RESULTS

In fully adjusted models, higher total, physical activity, and nutrition CPP intensity scores were associated with lower odds of dissatisfaction with weight (1 year total CPP odds ratio [OR]: 0.41, 95% confidence interval [CI], 0.22-0.73; 6 year total CPP OR: 0.48, 0.29-0.80). Higher physical activity CPP intensity over the past year was associated with greater odds of weight satisfaction (OR: 1.77, 95% CI, 1.10-2.84). No associations were observed with dieting behaviours.

CONCLUSIONS

Results suggest that community efforts focusing on nutrition and physical activity to prevent childhood obesity may be associated with weight satisfaction and not with unhealthy dieting behaviours.

Race/ethnic variations in school-year versus summer differences in adolescent physical activity

Children and adolescents gain more weight in the summer than the school year, and there are race/ethnic differences in this pattern. Youth physical activity is lower in the summer, and the main aim of the present study was to examine race/ethnic and sex differences in adolescent physical activity, sedentary behavior, and related variables, comparing the school-year and summer. Adolescents aged 11-17 years were recruited from lower-income areas of five states in 2017-2018, and n = 207 completed surveys in both the school-year and summer: 56 African Americans, 30 American Indians, 21 Asian/Pacific Islanders, 49 Latinos, and 51 White, non-Hispanics. Of these, n = 150 also had accelerometer data. Objectively-measured physical activity was lower in the summer, especially among American Indian, Asian/Pacific Islander, and Latino subgroups. Reported screen time was substantially higher in the summer (p < .04), with the biggest increase among African Americans. Reported enjoyment of physical activity was generally lower in the summer (p < .02), which could help explain reduced physical activity. Which race/ethnic groups were at higher risk in the summer varied for physical activity and screen time, so interventions should be tailored for each group. Improved strategies to increase physical activity in the summer, especially among higher-risk groups, could contribute to youth obesity control.

Building evidence to reduce inequities in youth physical activity and obesity: Introduction to the Physical Activity Research Center (PARC) Special Section

This guest editorial introduces the rationale and goals of the Physical Activity Research Center. It provides an overview of the five papers in this Special Section plus six commissioned studies intended to inform advocacy efforts.

Association between overweight or obesity and the risk for childhood asthma and wheeze: An updated meta-analysis on 18 articles and 73 252 children

BACKGROUND

Overweight or obesity is increasingly recognized as a possible risk factor for childhood asthma.

OBJECTIVES

We aimed to meta-analyse the association between overweight or obesity and the risk for childhood asthma and wheeze and meanwhile explore potential causes of between-study heterogeneity.

METHODS

Literature search, study selection, and data extraction were performed independently and in duplicate. Data were analysed by STATA software.

RESULTS

Eighteen articles and 73 252 children were analysed. In overall analyses, there was a significant association between overweight or obesity and the risk for childhood asthma (odds ratio [OR] = 1.30; 95% confidence interval [CI], 1.23-1.39; P < 0.001) and wheeze (OR = 1.90; 95% CI, 1.38-2.63; P < 0.001), with none/marginal publication bias as revealed by the Egger test (P = 0.938/0.038), respectively. Subgroup analyses showed that children with obesity (OR = 1.40; 95% CI, 1.29-1.52) were more likely to have asthma than children with overweight (OR = 1.22; 95% CI, 1.14-1.31), and in children with overweight or obesity, girls (OR = 1.34; 95% CI, 1.16-1.56) were more likely to have asthma than boys (OR = 1.27; 95% CI, 1.15-1.40).

CONCLUSIONS

Our findings indicate that overweight or obesity is a significant risk factor for childhood asthma and wheeze and in children with overweight or obesity, the risk is more evident in girls than in boys.

The Healthy Children, Strong Families 2 (HCSF2) Randomized Controlled Trial Improved Healthy Behaviors in American Indian Families with Young Children

BACKGROUND

American Indian (AI) families experience a disproportionate risk of obesity due to a number of complex reasons, including poverty, historic trauma, rural isolation or urban loss of community connections, lack of access to healthy foods and physical activity opportunities, and high stress. Home-based obesity prevention interventions are lacking for these families.

OBJECTIVE

Healthy Children, Strong Families 2 (HCSF2) was a randomized controlled trial of a healthy lifestyle promotion/obesity prevention intervention for AI families.

METHODS

Four hundred and fifty dyads consisting of an adult primary caregiver and a child ages 2 to 5 y from 5 AI communities were randomly assigned to a monthly mailed healthy lifestyle intervention toolkit (Wellness Journey) with social support or to a child safety control toolkit (Safety Journey) for 1 y. The Wellness Journey toolkit targeted increased fruit/vegetable (F/V) intake and physical activity, improved sleep, decreased added sugar intake and screen time, and improved stress management (adults only). Anthropometrics were collected, and health behaviors were assessed via survey at baseline and at the end of Year 1. Adults completed surveys for themselves and the participating child. Repeated measures analysis of variance was used to assess change over the intervention period.

RESULTS

Significant improvements to adult and child healthy diet patterns, adult F/V intake, adult moderate-to-vigorous physical activity, home nutrition environment, and adult self-efficacy for health behavior change were observed in Wellness Journey compared with Safety Journey families. No changes were observed in adult body mass index (BMI), child BMI z-score, adult stress measures, adult/child sleep and screen time, or child physical activity. Qualitative feedback suggests the intervention was extremely well-received by both the families and our community partners across the 5 participating sites.

CONCLUSIONS

This multi-site community-engaged intervention addressed key gaps regarding family home-based approaches for early obesity prevention in AI communities and showed several significant improvements in health behaviors. Multiple communities are working to sustain intervention efforts. This trial was registered at clinicaltrials.gov as NCT01776255.

Diabetes and the Built Environment: Evidence and Policies

PURPOSE OF REVIEW

To explore the relationship between the built environment and type 2 diabetes, considering both risk factors and policies to reduce risk. The built environment refers to the physical characteristics of the areas in which people live including buildings, streets, open spaces, and infrastructure.

RECENT FINDINGS

A review of current literature suggests an association between the built environment and type 2 diabetes, likely driven by two key pathways-physical activity and the food environment. Other hypothesized mechanisms linking the built environment and type 2 diabetes include housing policy, but evidence in these areas is underdeveloped. Policies designed to enhance the built environment for diabetes risk reduction are mechanistically plausible, but as of yet, little direct evidence supports their effectiveness in reducing in type 2 diabetes risk. Future work should rigorously evaluate policies meant to reduce type 2 diabetes via the built environment.

Childhood obesity research at the NIH: Efforts, gaps, and opportunities

Childhood obesity is a major public health challenge. This article describes an overview of the National Institutes of Health (NIH) behavioral and social sciences childhood obesity research efforts. The overview will highlight five areas of childhood obesity research supported by the NIH: (a) basic behavioral and social sciences; (b) early childhood; (c) policies, programs, and environmental strategies; (d) health disparities; and (e) transagency and public-private collaboration. The article also describes potential gaps and opportunities in the areas of childhood obesity and severe obesity, measurement, and sleep.

Recruitment outcomes, challenges and lessons learned: the Healthy Communities Study

BACKGROUND

The Healthy Communities Study (HCS) was a national study of community programs and policies that aimed to address childhood obesity; it necessitated recruitment of a large sample of children from communities throughout the United States.

OBJECTIVE

The HCS aimed to complete visits with an average of 45 children and 12 key informants from at least 120 communities, diverse with respect to region of the country, urbanicity, socioeconomic status, race, ethnicity and intensity of community programs and policies that aim to address childhood obesity.

METHODS

Purchased address lists were utilized to select households for recruitment during Wave 1 of the study, and recruitment of families through schools was employed for Wave 2.

RESULTS

The HCS successfully obtained approval from 149 school districts and 478 schools in 130 communities, recruited 5138 families, and interviewed 1421 key informants to allow for characterization of overall intensity of obesity prevention/treatment efforts in each community.

CONCLUSIONS

Lessons learned are presented. Future studies should plan for inclusion of the following in development of recruitment strategies: literature review, formative research, pilot testing, and ongoing monitoring and adjustment.

The prevalence of community programmes and policies to prevent childhood obesity in a diverse sample of US communities: the Healthy Communities Study

INTRODUCTION

This manuscript describes the prevalence and attributes of community programmes and policies (CPPs) to address childhood obesity documented as occurring in 130 diverse US communities.

METHODS

Key informant interviews (N = 1420) and document abstraction were used to identify and characterize CPPs to promote physical activity and healthy nutrition occurring during a 10-year retrospective study period. Data were collected in 2013-2015 and analysed in 2016.

RESULTS

Across all 130 communities, 9681 distinct CPPs were reported as occurring by key informants. Of these, 5574 (58%) focused on increasing physical activity, 2596 (27%) on improving nutrition and 1511 (16%) on both behaviours. The mean number of CPPs per community was 74.0, with a range of 25 to 295 across all communities. Most CPPs occurred more than once (63%) and on average lasted 6.1 years. The greatest number of reported CPPs occurred in school settings (44%).

CONCLUSIONS

Communities showed a wide range of investment in the amount of CPPs occurring in settings that affect opportunities for children to engage in physical activity and healthy nutrition. The pattern of implementation of CPPs showed variation over time, with an increase in more recent years. This observational study provides new and valuable information about what US communities are doing to prevent childhood obesity.

Supplement overview: what the Healthy Communities Study is telling us about childhood obesity prevention in U.S. communities

The Healthy Communities Study (HCS), conducted between 2010 and 2016, tells a real-world story of how childhood obesity prevention efforts have unfolded in 130 U.S. communities. The study documented nearly 10,000 current and past community policies and programs (CPPs) and assessed dietary and physical activity behaviors, weight, height, and waist circumference of more than 5,000, 4- to 15-year-old children. The articles in this HCS supplement describe the variables created to characterize the CPPs, CPP relationships with children's behavioral and weight status, other analyses of interest, and recruitment challenges. Findings suggest that many of the strategies being implemented work as intended to improve children's behaviors and weight status. However, of concern, findings also indicate lesser reach to children in demographic groups at highest risk of obesity. Overall, the HCS insights can guide the next phase of efforts to strengthen existing CPPs and motivate other, novel approaches to combating childhood obesity.