Evaluation of a cluster-randomized controlled trial: Communities for Healthy Living, family-centered obesity prevention program for Head Start parents and children.

BACKGROUND: This study reports the outcomes of Communities for Healthy Living (CHL), a cluster randomized obesity prevention trial implemented in partnership with Head Start, a federally-funded preschool program for low-income families. METHODS: Using a stepped wedge design, Head Start programs (n = 16; Boston, MA, USA) were randomly assigned to one of three intervention start times. CHL involved a media campaign and enhanced nutrition support. Parents were invited to join Parents Connect for Healthy Living (PConnect), a 10-week wellness program. At the beginning and end of each school year (2017-2019), data were collected on the primary outcome of child Body Mass Index z-score (BMIz) and modified BMIz, and secondary outcomes of child weight-related behaviors (diet, physical activity, sleep, media use) and parents' weight-related parenting practices and empowerment. Data from 2 years, rather than three, were utilized to evaluate CHL due to the COVID-19 pandemic. We used mixed effects linear regression to compare relative differences during intervention vs. control periods (n = 1274 vs. 2476 children) in (1) mean change in child BMIz and modified BMIz, (2) the odds of meeting child health behavior recommendations, (3) mean change in parenting practices, and (4) mean change in parent empowerment. We also compared outcomes among parents who chose post-randomization to participate in PConnect vs. not (n = 55 vs. 443). RESULTS: During intervention periods (vs. control), children experienced greater increases in BMIz and modified BMIz (b = 0.06, 95% CI = 0.02,0.10; b = 0.07, 95% CI = 0.03, 0.12), yet were more likely to meet recommendations related to three of eight measured behaviors: sugar-sweetened beverage consumption (i.e., rarely consume; Odds Ratio (OR) = 1.5, 95% CI = 1.2,2.3), water consumption (i.e., multiple times per day; OR = 1.6, 95% CI = 1.2,2.3), and screen time (i.e., ≤1 hour/day; OR = 1.4, 95% CI = 1.0,1.8). No statistically significant differences for intervention (vs. control) periods were observed in parent empowerment or parenting practices. However, parents who enrolled in PConnect (vs. not) demonstrated greater increases in empowerment (b = 0.17, 95% CI = 0.04,0.31). CONCLUSIONS: Interventions that emphasize parent engagement may increase parental empowerment. Intervention exposure was associated with statistically, but not clinically, significant increases in BMIz and increased odds of meeting recommendations for three child behaviors; premature trial suspension may explain mixed results. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03334669 , Registered October 2017.

Acceptability and appropriateness of a novel parent-staff co-leadership model for childhood obesity prevention in Head Start: a qualitative interview study.

BACKGROUND: Peer leadership can be an effective strategy for implementing health programs, benefiting both program participants and peer leaders. To realize such benefits, the peer leader role must be appropriate for the community context. Also, peer leaders must find their role acceptable (i.e., satisfactory) to ensure their successful recruitment and retention. To date, parent peer leaders have seldom been part of early childhood obesity prevention efforts. Moreover, parents at Head Start preschools have rarely been engaged as peer leaders. The aim of this study is to evaluate the appropriateness and acceptability of an innovative model for engaging parents as peer leaders for this novel content area (early childhood obesity prevention) and setting (Head Start). METHODS: Parents Connect for Healthy Living (PConnect) is a 10-session parent program being implemented in Head Start preschools as part of the Communities for Healthy Living early childhood obesity prevention trial. PConnect is co-led by a parent peer facilitator who is paired with a Head Start staff facilitator. In the spring of 2019, 10 PConnect facilitators participated in a semi-structured interview about their experience. Interview transcripts were analyzed by two coders using an inductive-deductive hybrid analysis. Themes were identified and member-checked with two interviewees. RESULTS: Themes identified applied equally to parent and staff facilitators. Acceptability was high because PConnect facilitators were able to learn and teach, establish meaningful relationships, and positively impact the parents participating in their groups, although facilitators did express frustration when low attendance limited their reach. Appropriateness was also high, as PConnect provided adequate structure and support without being overly rigid, and facilitators were able to overcome most challenges they encountered. CONCLUSIONS: The PConnect co-facilitation model was highly acceptable and appropriate for both the parent facilitators (peer leaders) and the staff facilitators. Including parents as peer leaders aligns to Head Start's emphasis on parent engagement, making it a strong candidate for sustained implementation in Head Start. The insights gained about the drivers of peer leadership appropriateness and acceptability in this particular context may be used to inform the design and implementation of peer-led health programs elsewhere. TRIAL REGISTRATION: clinicaltrials.gov, NCT03334669 (7-11-17).

Summer Weight Gain Among Preschool-Aged Children With Obesity: An Observational Study in Head Start.

School-aged children gain weight most rapidly in summer, but few studies have investigated summer weight gain among preschool-aged children. We fit continuous linear spline mixed models to test for accelerated summer weight gain among 2,044 children attending 16 Boston-area Head Start programs between fall 2016 and spring 2019. Academic year and summer rates of change in modified body mass index z-score differed (P < .001), with accelerated summer weight gain most pronounced among children with obesity. As with school-aged children, increased focus on the summer is warranted for promoting healthy weight among children in Head Start.

Family-based childhood obesity prevention interventions: a systematic review and quantitative content analysis.

BACKGROUND: A wide range of interventions has been implemented and tested to prevent obesity in children. Given parents' influence and control over children's energy-balance behaviors, including diet, physical activity, media use, and sleep, family interventions are a key strategy in this effort. The objective of this study was to profile the field of recent family-based childhood obesity prevention interventions by employing systematic review and quantitative content analysis methods to identify gaps in the knowledge base. METHODS: Using a comprehensive search strategy, we searched the PubMed, PsycIFO, and CINAHL databases to identify eligible interventions aimed at preventing childhood obesity with an active family component published between 2008 and 2015. Characteristics of study design, behavioral domains targeted, and sample demographics were extracted from eligible articles using a comprehensive codebook. RESULTS: More than 90% of the 119 eligible interventions were based in the United States, Europe, or Australia. Most interventions targeted children 2-5 years of age (43%) or 6-10 years of age (35%), with few studies targeting the prenatal period (8%) or children 14-17 years of age (7%). The home (28%), primary health care (27%), and community (33%) were the most common intervention settings. Diet (90%) and physical activity (82%) were more frequently targeted in interventions than media use (55%) and sleep (20%). Only 16% of interventions targeted all four behavioral domains. In addition to studies in developing countries, racial minorities and non-traditional families were also underrepresented. Hispanic/Latino and families of low socioeconomic status were highly represented. CONCLUSIONS: The limited number of interventions targeting diverse populations and obesity risk behaviors beyond diet and physical activity inhibit the development of comprehensive, tailored interventions. To ensure a broad evidence base, more interventions implemented in developing countries and targeting racial minorities, children at both ends of the age spectrum, and media and sleep behaviors would be beneficial. This study can help inform future decision-making around the design and funding of family-based interventions to prevent childhood obesity.

Lessons Learned by Community Stakeholders in the Massachusetts Childhood Obesity Research Demonstration (MA-CORD) Project, 2013-2014.

INTRODUCTION: Childhood obesity is a multifaceted disease that requires sustainable, multidimensional approaches that support change at the individual, community, and systems levels. The Massachusetts Childhood Obesity Research Demonstration project addressed this need by using clinical and public health evidence-based methods to prevent childhood obesity. To date, little information is known about successes and lessons learned from implementing such large-scale interventions. To address this gap, we examined perspectives of community stakeholders from various sectors on successes achieved and lessons learned during the implementation process. METHODS: We conducted 39 semistructured interviews with key stakeholders from 6 community sectors in 2 low-income communities from November 2013 through April 2014, during project implementation. Interviews were audio-recorded, transcribed, and analyzed by using the constant comparative method. Data were analyzed by using QSR NVivo 10. RESULTS: Successes included increased parental involvement in children's health and education, increased connections within participating organizations and within the broader community, changes in organizational policies and environments to better support healthy living, and improvements in health behaviors in children, parents, and stakeholders. Lessons learned included the importance of obtaining administrative and leadership support, involving key stakeholders early in the program planning process, creating buffers that allow for unexpected changes, and establishing opportunities for regular communication within and across sectors. CONCLUSION: Study findings indicate that multidisciplinary approaches support health behavior change and provide insight into key issues to consider in developing and implementing such approaches in low-income communities.

Fathers' Representation in Observational Studies on Parenting and Childhood Obesity: A Systematic Review and Content Analysis.

BACKGROUND: The involvement of fathers in caregiving has increased substantially over the past 30 years. Yet in child and adolescent psychopathology, few studies include fathers as research participants and few present results for fathers separate from those for mothers. We test for the first time whether a similar pattern exists in research on parenting and childhood obesity. OBJECTIVES: To conduct a systematic review and quantitative content analysis of observational studies on parenting and childhood obesity to (1) document the inclusion of fathers, relative to mothers, as research participants and (2) examine characteristics of studies that did and did not include fathers. This study presents new data on the number and gender of parent research participants. SEARCH METHODS: We searched title, abstract, and Medical Subject Headings term fields in 5 research databases (PubMed, EMBASE, Academic Search Premier, PsycINFO, and CINAHL) using terms combining parents or parenting (e.g., mother, father, caregiver, parenting style, food parenting) and obesity (e.g., obesity, body weight, overweight) or obesity-related lifestyle behaviors (e.g., diet, snacking, physical activity, outdoor play, exercise, media use). SELECTION CRITERIA: We identified and screened studies as per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) published between January 2009 and December 2015, examining links between parenting and childhood obesity, including parents or caregivers as research participants, and written in English. We excluded interventions, nonhuman studies, dissertations, conference abstracts, and studies on youths with specific medical conditions. Of 5557 unique studies, 667 studies were eligible. DATA COLLECTION AND ANALYSIS: For each of the 667 studies, 4 coders were trained to code characteristics of the study (e.g., publication year, geographic region, journal, study focus) and parent research participants (e.g., parent gender, demographic background, biological relationship with child, and residential status). We established intercoder reliability before coding the full sample of studies (mean Krippendorf's alpha = .79; average percentage agreement = 94%). MAIN RESULTS: Of the studies, 1% included only fathers. By contrast, 36% included only mothers. Although slightly more than 50% of studies (n = 347) included at least 1 father, only 57 studies reported results for fathers separate from those for mothers. When we combined them with studies including only fathers, 10% of studies overall reported results for fathers. Samples sizes of fathers were small compared with mothers. Of studies with fathers, 59% included 50 or fewer fathers, whereas 22% of studies with mothers included 50 or fewer mothers. The mean sample size for fathers across all eligible studies was 139, compared with 672 for mothers. Overall, fathers represented 17% of parent participants across all eligible studies. CONCLUSIONS: This study unequivocally demonstrates that fathers are underrepresented in recent observational research on parenting and childhood obesity. Public health implications. The underrepresentation of fathers in obesity research compromises the development of effective family interventions for childhood obesity prevention. Targeted opportunities and incentives are needed to support research with fathers.

A systematic review of media parenting in the context of childhood obesity research.

BACKGROUND: We conducted a systematic review to obtain studies on childhood obesity and parenting published between 2009 and 2015, and draw out those studies with a particular focus on media parenting. Our analysis addresses two major aims: 1) to describe how media use and media-related parenting practices and skills are operationalized in studies and 2) to explore whether studies measured ecological factors (e.g. individual-, family-, and community-level factors), which could be associated with media parenting practices. METHODS: Using a standardized, multi-stage process, we identified and screened articles focused on parenting and childhood obesity (N = 667). Studies were eligible for this analysis if they measured media parenting and/or the home media environment, resulting in a sample of 103 studies. We used quantitative content analysis to code the full text articles for content related to our study aims; analyses were performed using SAS 9.4. RESULTS: Seventy nine percent of studies measured media use, 82 % measured media parenting, and 65 % measured the home media environment. Studies measuring media use focused on a limited number of devices; while all studies measured child/parent use of televisions, only 3 % measured use of smartphones, 1 % measured use of laptops, and no studies measured use of tablets. Measures of parenting practices focused largely on rules specific to limiting screen time. Although 60 % of studies measured at least one ecological factor, child-specific and neighborhood/community-level factors were rarely measured. CONCLUSIONS: More detailed measurements of media use that reflects current technology trends and diverse contexts of use are needed to better understand media use and parent regulation of child media exposure. Measures of the ecological context can more fully assess factors impacting media parenting and, subsequently, child risk for overweight and obesity.

Community Stakeholders' Perceptions of Major Factors Influencing Childhood Obesity, the Feasibility of Programs Addressing Childhood Obesity, and Persisting Gaps.

Prior research has identified numerous factors contributing to increased rates of childhood obesity. However, few studies have focused explicitly on the experience of community stakeholders in low-income communities. This study sought to capture the perspectives of these on-the-ground experts regarding major factors contributing to childhood obesity as well as gaps in current prevention and control efforts. We conducted semi-structured interviews with 39 stakeholders from different community sectors (e.g., healthcare providers, childcare providers, teachers). Data were drawn from the Massachusetts Childhood Obesity Research Demonstration project, a multi-level, multi-sector intervention designed to reduce childhood obesity being implemented in two low-income communities in Massachusetts. Interviews were conducted at baseline, transcribed, coded using grounded theory approach, and analyzed in NVivo 10.0. The vast majority of stakeholders had recently participated in obesity prevention strategies, and nearly all of them identified gaps in prevention efforts either within their organizations or in the broader community. In addition to factors previously identified in the literature, several themes emerged including the need to change policies to increase physical activity during school, offer healthier snacks in schools and afterschool programs, and increase communication and collaboration within the community in prevention efforts. Community stakeholders can impact the success of interventions by bridging the gap between science and lived experience. The results of this study can guide future research by highlighting the importance of including stakeholders' frontline experiences with target populations, and using information on identified gaps to augment intervention planning efforts.

Community stakeholders' perceptions of barriers to childhood obesity prevention in low-income families, Massachusetts 2012-2013.

INTRODUCTION: The etiology of childhood obesity is multidimensional and includes individual, familial, organizational, and societal factors. Policymakers and researchers are promoting social-ecological approaches to obesity prevention that encompass multiple community sectors. Programs that successfully engage low-income families in making healthy choices are greatly needed, yet little is known about the extent to which stakeholders understand the complexity of barriers encountered by families. The objective of this study was to contextually frame barriers faced by low-income families reported by community stakeholders by using the Family Ecological Model (FEM). METHODS: From 2012 through 2013, we conducted semistructured interviews with 39 stakeholders from 2 communities in Massachusetts that were participating in a multisector intervention for childhood obesity prevention. Stakeholders represented schools; afterschool programs; health care; the Special Supplemental Nutrition Program for Women, Infants, and Children; and early care and education. Interviews were audio-recorded, transcribed, coded, and summarized. RESULTS: Stakeholder reports of the barriers experienced by low-income families had a strong degree of overlap with FEM and reflected awareness of the broader contextual factors (eg, availability of community resources, family culture, education) and social and emotional dynamics within families (eg, parent knowledge, social norms, distrust of health care providers, chronic life stressors) that could affect family adoption of healthy lifestyle behaviors. Furthermore, results illustrated a level of consistency in stakeholder awareness across multiple community sectors. CONCLUSION: The congruity of stakeholder perspectives with those of low-income parents as summarized in FEM and across community sectors illustrates potential for synergizing the efforts necessary for multisector, multilevel community interventions for the prevention of childhood obesity.

Adaptation and implementation outcomes of a parenting program for low-income, ethnically diverse families delivered virtually versus in-person.

Driven by the COVID-19 pandemic, many in-person health behavior interventions were compelled to quickly pivot to a virtual format with little time or capacity to reflect on or examine possible equity-related implications of a format that required digital access and remote learning skills. Using a parenting program for low-income families as a case study, this paper (a) outlines the process of adapting the program from an in-person to a virtual format and (b) examines the equity-related implications of this adaptation. Parents Connect for Healthy Living (PConnect) is a 10-session empowerment-focused parenting intervention designed to promote family health for Head Start families. In 2020, PConnect was adapted over a 6-month period from an in-person to a virtual format due to the advent of the COVID-19 pandemic. Three core elements were retained in the adaptation; session content, provision of coaching support for facilitators, and the co-facilitation model. Key modifications include session length, group composition, and language of program delivery. Head Start and PConnect records provided data to compare reach, acceptability, and appropriateness of virtual and in-person PConnect. Seventy-eight parents enrolled in the in-person program and 58 in the virtual program. Participant demographics and satisfaction were similar across formats, and demographics similar to the general Head Start population. Participation was higher in the virtual format. Parents participated in the virtual program primarily via smart phones (68%). This case study supports the acceptability and appropriateness of virtual parenting programs in ethnically diverse, low-resource settings.

The purpose of this study was to examine the process of adapting an in-person health and empowerment parenting program, Parents Connect for Healthy Living (PConnect), to a virtual format, and examine if this adaptation and implementation of the virtual format led to inequities. Modifications to in-person PConnect to accommodate a virtual format included session length, group composition, and language of program delivery. Participant demographics and satisfaction were similar across the in-person and virtual formats. Attendance was slightly higher in the virtual format, and differences in attendance rates by race/ethnicity in the virtual program were less apparent. Findings from this case study indicate future programs for parents in low-resource settings should consider a virtual or hybrid approach.

Exploring a theory of change: Are increases in parental empowerment associated with healthier weight-related parenting practices?

INTRODUCTION: Parent health-related empowerment is defined as the process by which parents realize control over their life situation and take action to promote a healthier lifestyle. For decades, researchers have described the theoretical potential of empowerment in health promotion efforts, though few have empirically examined this hypothesized relationship. This study is one of the first to examine the relationship between parental empowerment and healthy weight parenting practices (i.e., food, physical activity, sleep, and media parenting), as a mechanism for early childhood health promotion in community settings. METHODS: Low-income parents of preschool-aged children attending Head Start in Greater Boston between fall 2017 and spring 2019 were invited to complete a survey in the fall and spring of each academic school year (n = 578 with two surveys and n = 45 with four). Parental empowerment and healthy weight parenting practices were assessed using validated surveys. We used a multilevel difference-in-difference approach to estimate changes in healthy weight parenting practices score by changes in parental empowerment score. RESULTS: Out of a possible score of four, the unadjusted mean (SD) score in fall was 3.20 (0.40) for empowerment and 3.01 (0.40) for parenting. An increase in parental empowerment was associated with an increase in healthier parenting practices (b = 0.14; 95% CI = 0.08, 0.20; p < 0.0001). CONCLUSIONS: Parent empowerment may be an important target in interventions to prevent obesity in low-income children.

Development and Validation of a Parental Health-Related Empowerment Scale with Low Income Parents.

OBJECTIVES: Consistent with empowerment theory, parental empowerment acts as a mechanism of change in family-based interventions to support child health. Yet, there are no comprehensive, validated measures of parental health-related empowerment to test this important perspective. Informed by empowerment theory and in the context of a community-based obesity intervention, we developed a self-report measure of parental health-related empowerment and tested its preliminary validity with low-income parents. METHODS: The Parental Empowerment through Awareness, Relationships, and Resources (PEARR) is a 21-item scale designed to measure three subdimensions of empowerment including resource empowerment, critical awareness, and relational empowerment. In the fall of 2017 or the fall of 2018, low-income parents (n = 770, 88% mothers) from 16 Head Start programs in Greater Boston completed the PEARR. The resulting data were randomly split into two equal samples with complete data. The factorial structure of the PEARR was tested in the first half of the sample using principal component analysis (PCA) and exploratory factor analysis (EFA) and subsequently confirmed with the second half of the sample using confirmatory factor analysis (CFA). Internal consistency coefficients were calculated for the final subscales. RESULTS: Results from the PCA and EFA analyses identified three component factors (eigenvalues = 8.25, 2.75, 2.12) with all items loading significantly onto the hypothesized subdimension (ß > 0.59 and p < 0.01). The three-factor model was subsequently confirmed with the second half of the sample using CFA (ß > 0.54 and p < 0.01). Fit indices met minimum criteria (Comparative Fit Index = 0.95, Root Mean Square Error of Approximation = 0.05 (0.05, 0.06), Standardized Root-Mean-Square Residual = 0.05). Subscales demonstrated strong internal consistency (α= 0.83-0.90). CONCLUSIONS: Results support initial validity of a brief survey measuring parental empowerment for child health among Head Start parents. The PEARR can be utilized to measure changes in parental empowerment through interventions targeting empowerment as a mechanism of change.

Communities for Healthy Living (CHL) A Community-based Intervention to Prevent Obesity in Low-Income Preschool Children: Process Evaluation Protocol.

BACKGROUND: Process evaluation can illuminate barriers and facilitators to intervention implementation as well as the drivers of intervention outcomes. However, few obesity intervention studies have documented process evaluation methods and results. Community-based participatory research (CBPR) requires that process evaluation methods be developed to (a) prioritize community members' power to adapt the program to local needs over strict adherence to intervention protocols, (b) share process evaluation data with implementers to maximize benefit to participants, and (c) ensure partner organizations are not overburdened. Co-designed with low-income parents using CBPR, Communities for Healthy Living (CHL) is a family-centered intervention implemented within Head Start to prevent childhood obesity and promote family well-being. We are currently undertaking a randomized controlled trial to test the effectiveness of CHL in 23 Head Start centers in the greater Boston area. In this protocol paper, we outline an embedded process evaluation designed to monitor intervention adherence and adaptation, support ongoing quality improvement, and examine contextual factors that may moderate intervention implementation and/or effectiveness. METHODS: This mixed methods process evaluation was developed using the Pérez et al. framework for evaluating adaptive interventions and is reported following guidelines outlined by Grant et al. Trained research assistants will conduct structured observations of intervention sessions. Intervention facilitators and recipients, along with Head Start staff, will complete surveys and semi-structured interviews. De-identified data for all eligible children and families will be extracted from Head Start administrative records. Qualitative data will be analyzed thematically. Quantitative and qualitative data will be integrated using triangulation methods to assess intervention adherence, monitor adaptations, and identify moderators of intervention implementation and effectiveness. DISCUSSION: A diverse set of quantitative and qualitative data sources are employed to fully characterize CHL implementation. Simultaneously, CHL's process evaluation will provide a case study on strategies to address the challenges of process evaluation for CBPR interventions. Results from this process evaluation will help to explain variation in intervention implementation and outcomes across Head Start programs, support CHL sustainability and future scale-up, and provide guidance for future complex interventions developed using CBPR. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03334669 . Registered on October 10, 2017.

The Obesity Parenting Intervention Scale: Factorial Validity and Invariance Among Head Start Parents.

INTRODUCTION: Obesity affects 15.7% of U.S. preschoolers, with higher rates among low-income and Spanish-speaking populations. Food, physical activity, and sleep parenting practices, referred to collectively as obesity-related parenting practices, are linked with children's risk of obesity and are a common target in family-based obesity interventions. Yet, there is no brief, validated measure of obesity-related parenting practices that is appropriate for use in intervention studies and for diverse audiences. This study tests the factorial validity of a brief measure of obesity-related parenting and measurement invariance of the English and Spanish versions of the scale, as well as among mothers and fathers. METHODS: Parents of children enrolled in Head Start (n=578; 500 mothers and 78 fathers) completed a brief survey of food (7 items), physical activity (5 items), and sleep parenting (3 items) in fall of 2017 and 2018. Scale items were drawn from existing measures and the evidence base, initially drafted in English, and then translated to Spanish. One parent per family completed the scale independently in English (n=448) or Spanish (n=130). A confirmatory factor analysis framework was adopted to test a 3-factor model for the total sample. Multi-group structural equation modeling was used to assess measurement invariance of the scale by the language of administration (English or Spanish) and among mothers and fathers separately. RESULTS: Results supported a 3-factor model of obesity parenting with a single factor each for food, physical activity, and sleep parenting. There was statistically significant measurement invariance across all groups (p<0.05). Internal consistency was adequate across factors (α=0.65-0.80). CONCLUSIONS: This brief obesity-parenting scale demonstrates adequate factorial validity in English and Spanish and among mothers and fathers. This measure has been integrated into an intervention, and future work will test sensitivity to change.

Communities for healthy living (CHL) - A family-centered childhood obesity prevention program integrated into Head Start services: Study protocol for a pragmatic cluster randomized trial.

BACKGROUND: Childhood obesity is highly prevalent and carries substantial health consequences. Childhood obesity interventions have had mixed results, which may be partially explained by the absence of theory that incorporates broader family context and methods that address implementation challenges in low-resource settings. Communities for Healthy Living (CHL) is an obesity prevention program for Head Start preschools designed with careful focus on theory and implementation. This protocol paper outlines the design, content, implementation, and evaluation of CHL. METHODS/DESIGN: CHL integrates a parenting program co-led by Head Start staff and parents, enhanced nutrition support, and a media campaign. CHL content and implementation are informed by the Family Ecological Model, Psychological Empowerment Theory, and Organizational Empowerment Theory. The intervention is directed by community-based participatory research and implementation science principles, such as co­leadership with parents and staff, and implementation in a real world context. CHL is evaluated in a three-year pragmatic cluster-randomized trial with a stepped wedge design. The primary outcome is change in child Body Mass Index z-score. Secondary outcomes include children's weight-related behaviors (i.e., diet, physical activity, screen use, and sleep), parenting practices targeted at these behaviors (e.g., food parenting), and parent empowerment. The evaluation capitalizes on routine health data collected by Head Start (e.g., child height and weight, diet) coupled with parent surveys completed by subsamples of families. DISCUSSION: CHL is an innovative childhood obesity prevention program grounded in theory and implementation science principles. If successful, CHL is positioned for sustained implementation and nationwide Head Start scale-up.

A Cascade of Champions: A Qualitative Study about the MA-CORD Media Competition Implementation.

A media competition was part of the Massachusetts Childhood Obesity Research Demonstration (MA-CORD) Study. Criss et al., previously outlined the development and implementation of the competition, including variation in reach and adoption of the intervention across schools and afterschool programs. In this qualitative study, we examine community, provider, and organizational factors that explain the variation of media competition reach in school and afterschool programs, and describe the awareness of the media competition across other community sectors. Durlak and DuPre's ecological framework for understanding effective implementation provided the theoretical underpinnings for this study. Fifty-four key informant interviews were conducted, transcribed, and analyzed. Organizational capacity of committed teachers/staff and adaptability of the media competition seemed to be drivers for higher reach within school and afterschool programs. Salient themes that emerged as facilitators of effective implementation were having a cascade of champions and providing opportunity to participate in the media competition outside traditional class time. Clinics and coalitions were identified as additional sectors aware of the media competition. Specifically, our findings offer a new perspective on intervention design and a recommended direction for further study.