Innovative approaches to weight loss in a high-risk population: The small changes and lasting effects (SCALE) trial

Understanding family functioning in mothers and daughters with obesity

PURPOSE

This study sought to understand family functioning surrounding weight in Mexican American women with obesity.

METHODS

Semi-structured in-depth interviews were conducted with mothers and adult daughters (N = 116).

RESULTS

Thematic analysis identified five themes. 1) The communication process drives perception of supportive messages. Messages perceived as non-supportive consist of directives as interventions, confirmation of faults, and critical compliments whereas supportive consist of compliments, encouragement, empathetic listening, and disclosure. 2) Acculturation differences interfere with intergenerational alliance. Differences involve dissonance in communication, behavioural expectations, and weight-related practices. 3) Maladaptive conflict responses contribute to relational strain. These responses include avoidance, withdrawal, and defensiveness. 4) Role transformations alter the generational hierarchical relationship. Daughters serve as role models, caregivers, or collaborators. 5) Low communal coping heightens psychological distress. It does so by challenging family roles, increasing social isolation, and compromising social support.

CONCLUSION

Obesity interventions for Mexican American women may benefit from targeting relational skills to improve family functioning.

Improving Relational Functioning in Mother-Daughter Dyads With Obesity

Family-level interventions have the potential to address intergenerational obesity among Mexican American women. Given that poor family functioning is associated with worse weight loss outcomes, this study tested a weight management program aimed at improving relational functioning in mothers and daughters with obesity. Mexican American mothers and their adult daughters were randomly assigned to participate in a 16-week group-based standard behavioral (SB) weight loss program without or with relationship skills training (SRT). Relational functioning was assessed via observational behavioral coding using the Global Structural Family Rating Scale. General relational functioning and specifically positive alliance patterns and conflict avoidance improved significantly more in the SRT group than in the SB group. Average weight changes included percent weight loss of -5.6% in the SRT group versus -3.9% in the SB group and body mass index reduction of -2.2 kg/m2 in the SRT group versus -1.2 kg/m2 in the SB group. More participants in the SRT group (75%) than in the SB group (40%) tended to achieve at least 3% weight loss. Greater changes in positive alliance patterns increased the likelihood of losing 3% of body weight. Improving relational functioning in mother-daughter dyads may promote favorable outcomes in a behavioral weight loss intervention.

Positive Psychology Interventions in Medical Populations: Critical Issues in Intervention Development, Testing, and Implementation

Positive psychological well-being is prospectively associated with superior health outcomes. Positive psychology interventions have promise as a potentially feasible and effective means of increasing well-being and health in those with medical illness, and several initial studies have shown the potential of such programs in medical populations. At the same time, numerous key issues in the existing positive psychology literature must be addressed to ensure that these interventions are optimally effective. These include (1) assessing the nature and scope of PPWB as part of intervention development and application; (2) identifying and utilizing theoretical models that can clearly outline potential mechanisms by which positive psychology interventions may affect health outcomes; (3) determining consistent, realistic targets for positive psychology interventions; (4) developing consistent approaches to the promotion of positive psychological well-being; (5) emphasizing the inclusion of diverse samples in treatment development and testing; and (6) considering implementation and scalability from the start of intervention development to ensure effective real-world application. Attention to these six domains could greatly facilitate the generation of effective, replicable, and easily adopted positive psychology programs for medical populations with the potential to have an important impact on public health.

Can positive psychological interventions improve health behaviors? A systematic review of the literature

Positive psychological interventions (PPIs), which aim to cultivate psychological well-being, have the potential to improve health behavior adherence. This systematic review summarized the existing literature on PPI studies with a health behavior outcome to examine study methodology, quality, and efficacy. Of the 27 identified studies, 20 measured physical activity, eight measured medication adherence, seven measured diet, and three measured smoking (eight targeted multiple behaviors). Twenty studies were randomized controlled trials (RCTs; 13 fully powered), and seven had a single-arm design. Study samples were usually adults (n = 21), majority non-Hispanic white (n = 15) and female (n = 14), and with a specific disease (e.g., diabetes, n = 16). Most interventions combined a PPI with health behavior-focused content (n = 17), used a remote delivery method (n = 17), and received a moderate or low study quality rating. Overall, 19/27 studies found a health behavior improvement of at least medium effect size, while six of the 13 studies powered to detect significant effects were statistically significant. Of the behaviors measured, physical activity was most likely to improve (14/20 studies). In summary, PPIs are being increasingly studied as a strategy to enhance health behavior adherence. The existing literature is limited by small sample size, low study quality and inconsistent intervention content and outcome measurement. Future research should establish the most effective components of PPIs that can be tailored to different populations, use objective health behavior measurement, and robustly examine the effects of PPIs on health behaviors in fully powered RCTs.

A Lifestyle Intervention Program to Improve Knowledge and Health Behaviors in Women

OBJECTIVE

To improve health knowledge, facilitate healthy behaviors, and provide social support for a high-risk population of women by implementing a culturally tailored, gender-specific lifestyle intervention program.

DESIGN

Evidence-based practice project.

SETTING/LOCAL PROBLEM

A Chicago neighborhood in Cook County, Illinois, where there are increased rates of diabetes, heart disease, cancer, stroke, hypertension, obesity, preterm birth, and violent crime.

PARTICIPANTS

Female residents of the community, ages 19 to 45 years; 12 participants registered for the program, and 11 participants completed the entire 2-month program.

INTERVENTIONS/MEASUREMENTS

The BE WISE Lifestyle Intervention, a culturally tailored, gender-specific behavior change curriculum, was used for this project. An interprofessional team was used to enhance participant experience, and neighborhood collaborations were established to create sustainability of efforts. Pre- and postintervention measures of diet, physical activity, social support, and knowledge acquisition were used to evaluate outcomes.

RESULTS

Improvement was noted for knowledge in most of the content areas, as well as for dietary and physical activity behaviors. All participants rated the program highly and responded positively to the social support experienced in the group.

CONCLUSION

Culturally tailored lifestyle interventions can be effective in improving knowledge and encouraging behavior change, especially when delivered in group settings to enhance social support. Community-level collaborations enhance interventions by providing local support and resources for participants. Because behavior change takes time, follow-up at the 6-month and 1-year intervals is recommended to determine longer-term outcomes.

Understanding and effectively addressing disparities in obesity: A systematic review of the psychological determinants of emotional eating behaviours among Black women

Emotional eating may be a particularly important contributor to differences in body weight and weight loss response to behavioural interventions among non-Hispanic Black women. We performed a systematic review on the impact of psychological factors (stress, anxiety, depression, and discrimination) upon emotional eating and weight among non-Hispanic Black women, applying the Preferred Reporting Items for Systematic Reviews and Meta-analysis for relevant studies. The initial search yielded 4593 articles with 15 accepted for review. Based on this review, there is a suggestion that negative emotions, in particular, perceived stress, may be predictive of emotional eating among non-Hispanic Black women. Results from the only two longitudinal studies identified by the review indicate that stress influences emotional eating, and emotional eating predicts weight gain over time. Findings from this review highlight the need for more studies that examine various negative emotions that may lead to emotional eating and weight gain among non-Hispanic Black women. Findings from this review also highlight the need for more rigorous studies to differentiate the effects of emotional eating from that of the physiologic (ie, activation of the hypothalamic-pituitary axis) responses to stress and its impact on high-risk groups.

Promoting Healthier Home Food Environments Through 2-1-1: A Pilot and Feasibility Study

Relatively few interventions target the home food environment of adults for weight gain prevention. Using a pretest/posttest design, this study describes the adaptation and pilot testing of Healthy Homes/Healthy Families, a research-tested home food environment intervention, for telephone delivery to 2-1-1 clients (n = 101). The Healthy Eating Index-2015, a measure of diet quality, improved significantly at 4-month follow-up, as did the home food environment, with energy consumption improving in the expected direction. Overall findings suggest the simplified intervention will still be effective, although results may be attenuated and additional efforts may be needed for participant retention among 2-1-1 clients.

New research directions on disparities in obesity and type 2 diabetes

Obesity and type 2 diabetes disproportionately impact U.S. racial and ethnic minority communities and low-income populations. Improvements in implementing efficacious interventions to reduce the incidence of type 2 diabetes are underway (i.e., the National Diabetes Prevention Program), but challenges in effectively scaling-up successful interventions and reaching at-risk populations remain. In October 2017, the National Institutes of Health convened a workshop to understand how to (1) address socioeconomic and other environmental conditions that perpetuate disparities in the burden of obesity and type 2 diabetes; (2) design effective prevention and treatment strategies that are accessible, feasible, culturally relevant, and acceptable to diverse population groups; and (3) achieve sustainable health improvement approaches in communities with the greatest burden of these diseases. Common features of guiding frameworks to understand and address disparities and promote health equity were described. Promising research directions were identified in numerous areas, including study design, methodology, and core metrics; program implementation and scalability; the integration of medical care and social services; strategies to enhance patient empowerment; and understanding and addressing the impact of psychosocial stress on disease onset and progression in addition to factors that support resiliency and health.

Engaging Children to Support Parental Weight Loss: A Randomized Trial

Background. Despite evidence that social network members influence the eating behaviors of adults, no study to date has had the primary aim of examining children as support partners for parents in a weight loss intervention. Aim. To evaluate parent adherence with eating/exercise goals and weight loss in a 6-month study engaging children as support partners. Method. Adults with obesity (body mass index ≥ 30 kg/m², n = 102) and at least one child ≥12 years were randomized to a child support or control group. In the child support group, children enrolled with their parent and engaged in a supportive behavior 2 days/week. In the control group, there was no enrolled child support. Parents in both groups selected a healthy eating strategy and daily step goal. Results. There was no difference in weight loss between the child support and control groups (-5.97 vs. -5.42 lbs, p = .81). In the child support group, 30% of children did not engage in the study. The majority of parents whose children did not engage withdrew from the study. In secondary analyses, parent adherence with eating/exercise goals increased with the days of child support (p < .001). For all participants, low chaos in the home environment (p < .04) and increased parent adherence with follow-ups (p < .008) predicted weight loss. Conclusions. We found no treatment effect of child support on weight loss. Active child support of eating/exercise goals appeared to facilitate goal adherence, while anticipated but unrealized child support may have had iatrogenic consequences. Further investigation of family-focused weight loss interventions is warranted.

"I don't want to look sick skinny": Perceptions of Body Image and Weight Loss in Hispanics Living with HIV in South Texas

Objective

Obesity is rising in people with HIV (PLWH) and Hispanics. Both HIV and obesity are associated with cardiovascular disease morbidity and mortality. Our goal is to understand perceptions of body image and lifestyle in Hispanics with HIV to adapt interventions appropriately.

Methods

We conducted semi-structured interviews with 22 Hispanic PLWH and 6 providers. Purposive sampling selected patient participants across weights and genders. Interviews were coded and analyzed using grounded theory, comparing perspectives between patients with and without obesity, and patients and providers.

Results

Participants felt obesity and diabetes were "normal" in the community. Patients exhibited understanding of healthy diet and lifestyle but felt incapable of maintaining either. Traditionally Hispanic foods were blamed for local obesity prevalence. Five patients equated weight with health and weight loss with illness, and four expressed concerns that weight loss could lead to unintentional disclosure of HIV status. Participants with overweight or obesity expressed awareness of their weight and felt shamed by providers. Providers found weight loss interventions to be ineffective.

Conclusion

Interventions in this population must address identified barriers: overweight/obesity as a normative value, lack of self-efficacy, cultural beliefs surrounding food, fear of HIV-associated weight loss and stigma, and provider perspectives on intervention futility.