Patterns of weight change in a weight gain prevention study for young adults

OBJECTIVE

Recovery from weight regain is uncommon during weight loss treatment. This study examined whether participants in a weight gain prevention intervention similarly struggle to recover following weight gains and which factors predict transitions.

METHODS

This is a secondary analysis of data from the Study of Novel Approaches to Weight Gain Prevention (SNAP), a randomized controlled trial comparing two weight gain prevention interventions with a control group. Young adults (n = 599; age 18-35 years) were followed over 3 years. Markov models identified transition rates in going above and returning below baseline weight across follow-up. Logistic regressions identified predictors of transitions.

RESULTS

At each time point, approximately double the number of participants who transitioned from below to above baseline transitioned from above to below. The magnitude of weight changes from baseline and the number of weight loss strategies used predicted transitions from below to above and above to below baseline weight (with opposite relationships). Infrequent self-weighing and lower dietary restraint predicted transitions below to above baseline weight. Treatment arm, demographics, calorie consumption, and physical activity generally did not predict transitions.

CONCLUSIONS

Young adults engaging in weight gain prevention struggle to lose gained weight. Alternative strategies are needed to address weight gains in weight gain prevention interventions.

Translating evidence-based behavioral weight loss into a multi-level, community intervention within a community-based participatory research framework: the Wellness Engagement (WE) Project

Black Americans and individuals from economically disadvantaged backgrounds are at disproportionate risk for obesity, yet are underrepresented in behavioral weight loss (BWL) trials and experience less benefit from traditional programs. The Wellness Engagement (WE) Project sought to translate evidence-based BWL within a CBPR framework to promote change across multiple domains of influence in an under-resourced, predominantly Black community. The purpose of this paper is to describe the efforts we undertook to translate data from our extensive formative phase into programming well suited to meet the needs of the Petersburg community. In addition, we present data from our pilot work on feasibility and acceptability. Formative data were collected using a variety of methods including a community-wide survey, asset mapping, house chats, focus groups, and key informant interviews. In collaboration with key stakeholders and community members, evidence-based approaches to weight loss were adapted to meet the needs of the community with respect to both content and delivery modality. Materials were adapted to focus on small, realistic changes appropriate for the specific context. Behavioral groups, experiential nutrition and exercise sessions, and walking groups leveraged existing assets and were open to all community members. Feasibility and acceptability ratings were promising. Furthermore, the WE Project appeared to contribute to a culture of wellness. CBPR might be a viable approach for engaging under-resourced Black communities in behavioral weight management; larger scale implementation and evaluation efforts are needed.

Who loses weight in a weight gain prevention program? A comparison of weight losers and weight maintainers at 3 years

OBJECTIVE

Despite weight loss challenges in young adulthood, 17% of participants in the Study of Novel Approaches to Weight Gain Prevention (SNAP) weight gain prevention study lost ≥ 5% of their body weight at 3 years. These "weight losers" (n = 88) were compared to "weight maintainers" (n = 143), who successfully prevented weight gains by staying within ± 2.5% of their baseline weight at 3 years.

METHOD

Weight losers and maintainers (n = 231; 18-35 years old) were drawn from the SNAP randomized controlled trial (n = 599), which compared two weight gain prevention interventions with a control group. Participants completed anthropometric and psychosocial assessments at baseline, 4 months (end of face-to-face intervention), and 1, 2, and 3 years.

RESULTS

Three-year weight losers had significantly greater weight losses than maintainers by 4 months, and weight trajectories continued to diverge. Three-year weight change group was not associated with treatment assignment. At pretreatment, weight losers were heavier, closer to their self-reported highest ever weight, and further away from their self-identified ideal weight. Across treatment, weight losers had greater dietary restraint and autonomous motivation, had lower disinhibition and self-identified ideal weight, and self-weighed more frequently than weight maintainers.

CONCLUSIONS

Weight gain prevention messaging may be sufficient to initiate weight loss in a subset of young adults who are heavier and closer to their highest weight at baseline. Psychological and behavioral characteristics more consistent with weight loss may explain differences in weight outcomes between losers and maintainers at 3 years. Future studies may consider the effects of weight gain prevention versus weight loss messaging in tailoring weight control interventions for young adults. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Making large changes or small changes to prevent weight gain in young adulthood: which is preferred and by whom?

Knowledge of participant treatment preferences can inform decision-making regarding treatment dissemination and future participant adoption. To compare participant perceptions of two evidence-based approaches for weight gain prevention in young adults to identify the intervention with the greatest likelihood of adoption. As part of a randomized trial (Study of Novel Approaches to Weight Gain Prevention [SNAP]; n = 599) testing weight gain prevention interventions in young adults (18-35 years), individuals assigned to self-regulation interventions using either large changes or small changes reported on perceived personal effectiveness and difficulty of treatment over 3 years. Treatment satisfaction at 2-year follow-up was also reported. Pre-randomization, participants believed the large change intervention would be more personally effective than the small change intervention, although they also considered it more complex. Older age, lower body mass index (p = 0.056), and desire to maintain versus lose weight predicted greater perceived effectiveness of the small change relative to large change intervention. Over follow-up, the large change intervention was no longer perceived as more effective, but perceived effectiveness aligned with assigned treatment. The small change intervention was rated as less complex than the large change intervention at 4 months, but not at other follow-ups. At study conclusion, participants were largely satisfied with both treatments; however, in the small change intervention, individuals who were not successful at preventing weight gain were less satisfied than individuals who were successful. The large and small change interventions are both appropriate for dissemination with no clear advantages based on the participant perceptions.

A systematic review of weight-related communication trainings for physicians

Obesity is a leading cause of preventable death in the USA. Given the high number of adults seeking routine health care services, physicians have an opportunity to address weight loss during routine clinical encounters. It's often reported that physicians lack the training to address weight. Training programs are implemented in medical settings to prepare physicians to have conversations with patients. Yet, the degree of consistency among training programs and factors associated with better outcomes is unclear. The purpose of this study is to systematically review literature in physician communication trainings related to weight-to compare the content, outcomes, and implementation of existing studies examining weight-related communication training programs for physicians and determine factors associated with physician and patient outcomes. Articles were extracted from PubMed, Proquest, and Embase. Search terms included: health communication, physician training, weight, and obesity. Studies implementing a training program addressing weight among physicians were included. Trainings using either motivational interviewing (MI) or 5 As (Ask, Advise, Assess, Assist, and Arrange) framework found improvements in physicians' communication skills. A small number of trainings including experiential components were also associated with improvements in positive physician outcomes. Findings suggest trainings based in MI or 5 As framework improve physicians' communication skills, but few programs affected patient outcomes. Gaps remain with trainings that can demonstrate weight loss in patients. While work is needed to enhance the effects of these trainings on patient outcomes, data suggest that trainings should be longer in duration and include an experiential component.

Conducting a Community "Street Survey" to Inform an Obesity Intervention: The WE Project

Using a community-based participatory research approach, a citywide survey was conducted to explore perceptions of obesity and interventions to reduce obesity within an African American urban community. More than 1300 surveys were collected within 3 months; 92.9% of respondents agreed or strongly agreed that obesity was an important health issue in the community and the majority indicated that family-based interventions were the preferred pathway for improving physical activity (86.0%) and nutrition (85.2%). Engaging community members in survey development and implementation was an effective approach to build local research capacity and establish a shared agenda of reaching a diverse sample of community residents.

Effect of a High-Intensity Dietary Intervention on Changes in Dietary Intake and Eating Pathology during a Multicomponent Adolescent Obesity Intervention

Concerns remain about dietary changes during pediatric obesity treatment and eating pathology, which have not been investigated. This secondary data analysis from a randomized clinical trial examined associations between adolescents’ changes in energy intake and diet quality during obesity treatment with post-treatment eating pathology. Adolescents (N = 82: 13.7 ± 1.2 y, 34.9 ± 7.0 kg/m², 63.4% female, 46.3% black) received TEENS+, a 4-month multicomponent intervention. TEENS+ provided individualized dietary goals (1200–1800 kcal/day; number of “Go” foods/day (low-energy, high-nutrient-dense foods)). At 0 and 4 months, 3-day food records assessed energy intake and diet quality (Healthy Eating Index 2015 (HEI-2015)). Two HEI-2015 subscores were created: components to increase (increase), and components to limit (decrease). The Eating Disorder Examination Questionnaire measured eating pathology (total score and subscales: restraint; and eating, weight, and shape concern). Corrected p-values are reported as q-values. Energy intake decreased (−292 ± 418 kcal/day; q < 0.001), while diet quality improved during treatment (total HEI-2015 (4.5 ± 15.1; q = 0.034) and increase (3.3 ± 9.4; q = 0.011)). Restraint increased (+0.6 ± 1.4; q < 0.001), whereas shape (−0.5 ± 1.3; q = 0.004) and weight (−0.5 ± 1.4; q = 0.015) concerns decreased. Greater decreases in energy intake were associated with greater restraint post-treatment (F = 17.69; q < 0.001). No other significant associations were observed. Changes in adolescents’ dietary intake during obesity treatment were unrelated to increased shape, weight, or eating concerns post-treatment.

Promoting physical activity in young adult cancer survivors using mHealth and adaptive tailored feedback strategies: Design of the Improving Physical Activity after Cancer Treatment (IMPACT) randomized controlled trial

INTRODUCTION

Despite the health benefits of physical activity for cancer survivors, nearly 60% of young adult cancer survivors (YACS) are physically inactive. Few physical activity interventions have been designed specifically for YACS.

PURPOSE

To describe the rationale and design of the IMPACT (IMproving Physical Activity after Cancer Treatment) trial, which tests the efficacy of a theory-based, mobile physical activity intervention for YACS.

METHODS

A total of 280 physically inactive YACS (diagnosed at ages 18-39) will be randomized to a self-help control or intervention condition. All participants will receive an activity tracker and companion mobile app, cellular-enabled scale, individual videochat session, and access to a Facebook group. Intervention participants will also receive a 6-month mobile intervention based on social cognitive theory, which targets improvements in behavioral capability, self-regulation, self-efficacy, and social support, and incorporates self-regulation strategies and behavior change techniques. The program includes: behavioral lessons; adaptive goal-setting in response to individuals' changing activity patterns; tailored feedback based on objective data and self-report measures; tailored text messages; and Facebook prompts encouraging peer support. Assessments occur at baseline, 3, 6, and 12 months. The primary outcome is total physical activity min/week at 6 months (assessed via accelerometry); secondary outcomes include total physical activity at 12 months, sedentary behavior, weight, and psychosocial measures.

CONCLUSIONS

IMPACT uniquely focuses on physical activity in YACS using an automated tailored mHealth program. Study findings could result in a high-reach, physical activity intervention for YACS that has potential to be adopted on a larger scale and reduce cancer-related morbidity. ClinicalTrials.gov Identifier: NCT03569605.

Changes in Cardiovascular Risk Factors Over 6 Years in Young Adults in a Randomized Trial of Weight Gain Prevention

OBJECTIVE

This study aimed to determine the impact of weight gain prevention interventions on changes in cardiovascular risk factors over 6 years.

METHODS

The Study of Novel Approaches to Weight Gain Prevention (SNAP) randomized 599 participants (ages 18-35; 46% with BMI 21-25; 54% with BMI 25-30) to Large Changes (produce buffer by losing 5-10 pounds initially), Small Changes (daily small changes in intake and activity) or Control and followed 355 participants with ongoing intervention and assessments through 6 years.

RESULTS

There were no significant differences among interventions for changes in weight or cardiovascular disease (CVD) risk factors from baseline to 6 years. However, 44% of participants gained ≥5%, and only 14% lost ≥5% over 6 years. Weight changes, from baseline to year 6, were significantly associated with changes in risk factors, especially insulin and high-density lipoprotein cholesterol. Earlier weight changes (e.g., weight cycling) had no beneficial or adverse effect on changes in CVD risk factors at 6 years, independent of 6-year weight changes.

CONCLUSIONS

Despite participation in a weight gain prevention trial, almost half of these young adults gained ≥5% or more over 6 years, with significant worsening in CVD risk factors. Greater attention to long-term weight gain prevention in young adults is needed.

Parent Involvement in Adolescent Obesity Treatment: A Systematic Review

CONTEXT

Family-based lifestyle interventions are recommended for adolescent obesity treatment, yet the optimal role of parents in treatment is unclear.

OBJECTIVE

To examine systematically the evidence from prospective randomized controlled and/or clinical trials (RCTs) to identify how parents have been involved in adolescent obesity treatment and to identify the optimal type of parental involvement to improve adolescent weight outcomes.

DATA SOURCES

Data sources included PubMed, PsychINFO, and Medline (inception to July 2019).

STUDY SELECTION

RCTs evaluating adolescent (12-18 years of age) obesity treatment interventions that included parents were reviewed. Studies had to include a weight-related primary outcome (BMI and BMI z score).

DATA EXTRACTION

Eligible studies were identified and reviewed, following the Preferred Reporting for Systematic Review and Meta-Analyses guidelines. Study quality and risk of bias were evaluated by using the Cochrane Collaboration risk of bias tool.

RESULTS

This search identified 32 studies, of which 23 were unique RCTs. Only 5 trials experimentally manipulated the role of parents. There was diversity in the treatment target (parent, adolescent, or both) and format (group sessions, separate sessions, or mixed) of the behavioral weight loss interventions. Many studies lacked detail and/or assessments of parent-related behavioral strategies. In ∼40% of unique trials, no parent-related outcomes were reported, whereas parent weight was reported in 26% and associations between parent and adolescent weight change were examined in 17%.

LIMITATIONS

Only RCTs published in English in peer-reviewed journals were eligible for inclusion.

CONCLUSIONS

Further research, with detailed reporting, is needed to inform clinical guidelines related to optimizing the role of parents in adolescent obesity treatment.

An Examination of Adolescents' Values in a Motivational Interviewing-based Obesity Intervention

Objectives: In this paper, we examine values selected by adolescents as part of a motivational interviewing (MI) weight loss intervention. Methods: During a values clarification activity, adolescents (N = 52; 75.0% girls; 78.4% African-American; mean age = 13.5 ± 1.8 years; mean body mass index (BMI) = 36.8 ± 6.4 kg/m²) selected their top 5 values. Using MI, interventionists explored selected values with adolescents and related them to target behaviors to develop discrepancy and enhance motivation for engagement in behavioral weight loss behaviors. Values were categorized using thematic analysis. Frequencies of value and theme selection were examined. Results: The majority of adolescents selected values in the Health (N = 38; 73.1%), Religion/ Spirituality (N = 36; 69.2%), Personal Achievement (N = 31; 59.6%), Virtuous (N = 28; 53.8%), and Family (N = 27; 51.9%) categories. Conclusions: Values selected by adolescents with obesity can inform intervention development for this difficult to engage population.

Using motivational interviewing to enhance emerging adults' engagement in weight loss: The Live Well RVA pilot randomized clinical trial

Background

Emerging adults (ages 18–25) are at high risk for overweight/obesity, yet traditional adult behavioural weight loss (BWL) interventions do not meet the needs of individuals at this developmental stage. Motivational interviewing (MI) is an evidence‐based approach to promote behaviour change but has not been tested for weight loss in this population. The study aimed to test the feasibility and preliminary efficacy of an MI‐enhanced weight loss programme to promote engagement, retention and weight loss in emerging adults.

Methods

Emerging adults with overweight/obesity (N = 47, 81% female, 47% racial/ethnic minority, body mass index [BMI] = 33.2 ± 4.6 kg/m²) were randomized to either standard BWL or MI‐enhanced BWL (MIBWL). Weight was assessed objectively at baseline and posttreatment (3 months). Engagement (in‐person session attendance [weeks 1 and 2], online self‐monitoring [weeks 3–12] and online content viewing [weeks 3–12]) was tracked throughout the program.

Results

Though results did not reach the level of statistical significance, participants in MIBWL demonstrated greater programme engagement (77% vs. 61.0%, p = .11; Cohen d = .48), retention (71% vs. 48.0%, p = .10; Cohen h = .47) and intent‐to‐treat weight loss (−3.3% vs. −2.2%, p = .37; Cohen d = .26) compared with those in BWL.

Conclusions

Effect sizes suggest that MI might be a viable approach to enhance engagement and retention in weight loss programmes targeting emerging adults. This finding is meaningful, given the documented challenges with engagement and retention in this vulnerable population and the relationship between engagement and better weight loss outcomes. The results of this small pilot study support efforts to replicate these findings within the context of a fully powered trial.

A Secondary Data Analysis Examining Young Adults' Performance in an Internet Weight Loss Program with Financial Incentives

OBJECTIVE

In traditional behavioral weight loss (BWL) programs, young adults fare worse than older adults with respect to engagement, retention, and weight loss, but money and use of technology have been cited as program factors that might improve outcomes for this population. This study evaluated young adult performance in internet-based BWL (IBWL) offering financial incentives for self-monitoring and weight loss.

METHODS

Participants (N = 180; BMI = 33.2 ± 6.0 kg/m² ) were randomly assigned to a 12-week IBWL or IBWL + incentives (IBWL + $) group. This secondary data analysis compared young adults (ages 18-35) in IBWL (n = 16) with young adults in IBWL + $ (n = 12) on percent weight loss, engagement, and retention. Young adults (n = 28) were also compared with older adults (ages 36-70; n = 152) on these outcomes.

RESULTS

Young adult weight loss was -2.8% ± 5.2% in IBWL and -5.4% ± 5.7% in IBWL + $ (P = 0.23, partial η²  = 0.06). A greater proportion of young adults in IBWL + $ achieved a 10% weight loss compared with IBWL (42% vs. 6%, P = 0.02). Compared with older adults, young adults were less engaged, but there were no differences for retention or weight loss (P values > 0.05).

CONCLUSIONS

Findings suggest that technology-based BWL has the potential to eliminate weight loss disparities observed between young adults and older adults in in-person BWL trials. Moreover, adding financial incentives holds promise for promoting clinically meaningful weight loss for young adults.

Examining Heterogeneity of Outcomes in a Weight Gain Prevention Program for Young Adults

OBJECTIVE

This study aimed to characterize young adults who experienced significant weight gains (> 10%) over 3 years in a weight gain prevention program.

METHODS

Secondary data analysis from the Study of Novel Approaches to Weight Gain Prevention (SNAP), a randomized trial comparing two self-regulation interventions and a control arm in young adults (18-35 years; BMI 21-30.9 kg/m² ), was used. Large Gainers (≥ 10% of their body weight; n = 48), Small Gainers (2.6%-9.9%; n = 149), and Weight Stable participants (± 2.5%; n = 143) were compared on dimensions affecting weight gain.

RESULTS

Differences in weight gain among the three groups were significant by year 1 and subsequently increased. Those who became Large Gainers were heavier at baseline and further below their highest weight, and they reported more weight cycling than Weight Stable, with Small Gainers intermediate. Neither study arm nor pregnancy explained weight change differences among the three groups. Large Gainers reported more depressive symptoms than Weight Stable at years 1 and 2. Large Gainers were less likely to weigh themselves at least weekly at 4 months, before differences in weight gain emerged, and at years 1 and 2.

CONCLUSIONS

Large Gainers (representing almost 10% of participants) could be identified early by greater weight issues at baseline and lower use of weight gain prevention strategies.

Weight Gain Over 6 Years in Young Adults: The Study of Novel Approaches to Weight Gain Prevention Randomized Trial

OBJECTIVE

The study objective was to determine whether two self-regulation interventions that reduced 3-year weight gain in young adults remain effective at 6 years.

METHODS

A randomized trial was conducted in two academic settings in 599 young adults, aged 18 to 35 years, with normal weight or overweight; 504 (84%) reconsented for a 6-year extension (Study of Novel Approaches to Weight Gain Prevention-Extended [SNAP-E]) with ongoing intervention and assessments. Weight gain over 6 years was compared for all assigned to Control, Large Changes (LC; lose 5-10 pounds initially), and Small Changes (SC; make small daily changes in intake and activity).

RESULTS

Weight change from baseline to 6 years did not differ significantly among the three groups (Control = 3.9 kg, SC = 4.1 kg, and LC = 2.8 kg). However, there was a significant age-by-treatment interaction (P = 0.002). Among those < 25 years old, weight gain from baseline to 6 years averaged 7.3 kg in the Control group and was reduced by almost 50% in LC and SC. LC also significantly reduced mean weight gain (area under the curve) over 6 years compared with Control or SC.

CONCLUSIONS

Although the interventions did not reduce weight gain at 6 years for the full cohort, they were effective in those < 25 years old. Future efforts should focus on young adults aged 18 to 24.9 and test more intensive interventions with more diverse participants.

Early Engagement is Associated with Better Weight Loss in Emerging Adults

Objectives: Predictors of success among emerging adults (EAs; ages 18-25) within behavioral weight loss (BWL) trials are largely unknown. We examined whether early program engagement predicted overall engagement and weight loss in EAs. Methods: Data were pooled from 2 randomized controlled pilot trials in EAs. Participants (N = 99, 80% female, BMI = 33.7±5.1 kg/m²) received a 3-month BWL intervention. Weight was objectively assessed at 0 and 3 months; engagement was tracked weekly; retention was assessed at 3 months. Results: Greater engagement during the initial 4 weeks of treatment predicted greater weight loss (p = .001). Compared to those who did not engage in all 4 initial weeks, participants meeting this threshold experienced greater overall engagement (9.6 vs 4.2 weeks, p < .001), weight losses (intent-to-treat = -3.8% vs -1.3%, p = .004), and retention (78% vs 53%, p = .012). Conclusions: Early engagement in BWL is associated with better outcomes among EAs. Monitoring engagement in real-time during the initial 4 weeks of treatment may be necessary to intervene effectively. Early engagement did not vary by sex or race; future work should identify characteristics associated with poor early engagement.

Dietary outcomes within the study of novel approaches to weight gain prevention (SNAP) randomized controlled trial

BACKGROUND

Young adults (YA) are at high-risk for unhealthy dietary behaviors and weight gain. The Study of Novel Approaches to Weight Gain Prevention (SNAP) Trial demonstrated that two self-regulation approaches were effective in reducing weight gain over 2 years compared with control. The goal of this analysis was to examine effects of intervention on dietary outcomes and the association of diet changes with weight change.

METHODS

Participants were 599 YA, age 18-35 years, BMI 21.0-30.0 kg/m² (27.4 ± 4.4 years; 25.4 ± 2.6 kg/m²; 22% men; 73% non-Hispanic White), who were recruited in Providence, RI and Chapel Hill, NC and randomized to self-regulation with Small Changes (SC), self-regulation with Large Changes (LC) or Control (C). SC and LC emphasized frequent self-weighing to cue behavior changes (small daily changes vs. periodic large changes) and targeted high-risk dietary behaviors. Diet and weight were assessed at baseline, 4 months and 2 years.

RESULTS

LC and SC had greater decreases in energy intake than C at 4 months but not 2 years. LC had the greatest changes in percent calories from fat at 4 months, but differences were attenuated at 2 years. No differences in diet quality were observed. Across conditions, increased total energy consumption, fast food, meals away from home, and binge drinking, and decreased dietary quality and breakfast consumption were all associated with weight gain at 2 years.

CONCLUSIONS

This study suggests the need to strengthen interventions to produce longer term changes in dietary intake and helps to identify specific behaviors associated with weight gain over time in young adults.

TRIAL REGISTRATION

Clinicaltrials.gov # NCT01183689 , registered August 18, 2010.

A Cafeteria Personnel Intervention to Improve the School Food Environment

Objective: In this study, we examined the impact of an intervention targeting food service personnel on Smarter Lunchroom adherence in school cafeterias. Methods: This study used a quasi-experimental design, conducted in a Virginia school district serving predominantly African-American children, all eligible for free meals. In 2014-15, cafeteria managers (N = 38) from 43 schools were trained (and tasked with training their staff) on principles of behavioral economics and choice architecture designed to enhance students' food selections via modifications to the cafeteria environment. Booster trainings were conducted in 2015-16. Cafeteria personnel completed post-intervention surveys; trained raters conducted objective cafeteria environment ratings, assessing adherence with Smarter Lunchroom principles, at baseline, post-intervention, and one-year follow-up. Sales data also were examined. Results: Cafeteria personnel were satisfied (3.91 [of 5]±0.70) with the training and confident (4.18±0.52) in their ability to make changes. Overall adherence to Smarter Lunchroom principles increased 6.47% at post-intervention and 6.93% at follow-up (p = .001; partial eta² = .21-.24), with a corresponding decrease in sugared-beverage sales at post-intervention (p = .001). Conclusions: This environmental-level intervention focused on training cafeteria personnel was associated with increased adherence to Smarter Lunchroom principles, sustained over 2 years. Future research should investigate the impact of this intervention on students' dietary behaviors in a rigorously designed trial.

Eating pathology and psychological outcomes in young adults in self-regulation interventions using daily self-weighing

OBJECTIVE

Self-regulation interventions encouraging daily weighing prevent weight gain in young adults; however, concerns have been raised that such interventions may have undesirable effects on eating pathology, depression, and health-related quality of life (HRQL). The present study examined whether self-regulation interventions and self-weighing frequency were associated with these indices in normal weight individuals and those with overweight or obesity.

METHODS

Young adults (n = 599), 18-35 years with a body mass index (BMI) 21.0-30.9 kg/m² were randomized to control, self-regulation with small changes (SC) or self-regulation with large changes (LC). Interventions taught frequent self-weighing to guide behavioral changes. SC prescribed daily small decreases in intake and increases in physical activity. LC prescribed a 5- to 10-lb weight loss to buffer against anticipated gains. Psychological indices were assessed at baseline and periodically over 2 years of follow-up.

RESULTS

There was no evidence that the interventions increased depressive symptoms or compensatory behaviors or decreased HRQL relative to control. LC increased flexible and rigid control and SC decreased disinhibition. Results did not differ by weight status with the exception of rigid control; here, differences between LC and the other conditions were smaller among those with BMI ≥ 25. Greater self-weighing frequency over time was associated with increases in flexible and rigid control, dietary restraint, and improvements in HRQL.

CONCLUSIONS

The self-regulation interventions and increases in self-weighing had no untoward effects. Encouraging weight gain prevention in young adults through frequent weighing and self-regulation appears to be safe for normal weight young adults and those with overweight. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

The relationship between body mass index, binge eating disorder and suicidality

BACKGROUND

While restrictive and compensatory eating disorders (e.g. anorexia and bulimia) are associated with elevated risk of suicide, less is known about binge eating disorder (BED). There is suggestive evidence of a U-shaped relationship between body mass index (BMI) and completed suicide, but fewer studies on suicidal ideation or attempts. This study examined the association between BED, BMI, and suicidality, and assessed whether these relationships varied by gender.

METHODS

Data come from the Collaborative Psychiatric Epidemiologic Surveys (N = 14,497). Binge episodes and BED were assessed using the Composite International Diagnostic Inventory (CIDI). BMI was calculated from self-reported height and weight. Suicidal ideation/attempts were assessed using the CIDI. Weighted logistic regression was used to assess the association between binging/BED, BMI and suicidality. Interaction terms were used to assess whether the relationship between BMI and suicidality was moderated by binging/BED, and whether the relationships between binging/BED and BMI differed by gender.

RESULTS

One-third of adults with BED had a history of suicidality, compared to 19% of those without. Both binging (OR: 1.95, 95% CI: 1.50-2.53) and BED (OR: 2.01, 95% CI: 1.41-2.86) were associated with suicidality in fully-adjusted models. BMI was associated with suicidality in a curvilinear manner, and this relationship was exacerbated by binging/BED (OR_{Binge eating x BMI}: 1.04, 95% CI: 1.01-1.09, p < 0.05). The relationship between BMI and suicidality did not differ by gender (OR_{gender x BMI}: 1.00, p < 0.770). However, the relationship between binge eating and suicidality was stronger for women relative to men (OR_{gender X binge}: 1.87, p < 0.012).

CONCLUSIONS

Binge eating, even below the threshold for BED, is associated with suicidality. BMI is associated with suicidality in a curvilinear manner, and the BMI-suicidality relationship is potentiated by binge eating/BED. Findings support the thoughtful integration of psychiatric care into weight loss programs for adults with a history of binging behavior.

Small Incentives Improve Weight Loss in Women From Disadvantaged Backgrounds

INTRODUCTION

Women from lower-income backgrounds have the highest rates of obesity. Thus, effective programs for this high-risk population are urgently needed. Evidence suggests that adding financial incentives to treatment helps to engage and promote health behavior change in lower-income populations; however, this has never been tested in women for obesity treatment. The purpose of this study was to examine whether adding small financial incentives to Internet weight loss treatment yields better weight loss outcomes in women from lower-income backgrounds compared with the same treatment without incentives. Weight losses in lower-versus higher-income women were also compared.

METHODS

Data were pooled from two randomized trials in which women (N=264) received either Internet behavioral weight loss treatment (IBWL) or IBWL plus incentives (IBWL+$). Weight was objectively assessed. Data were collected and analyzed from 2011 to 2017.

RESULTS

Women from lower-income backgrounds had significantly better weight loss outcomes in IBWL+$ compared with IBWL alone (6.4 [SD=4.9%] vs 2.6 [SD=4.6%], p=0.01). Moreover, a greater percentage achieved a ≥5% weight loss in IBWL+$ vs IBWL alone (52.6% vs 38.1%, p=0.01). Interestingly, the comparison between lower-income versus higher-income groups showed that, in IBWL alone, women with lower income achieved significantly poorer weight losses (3.4 [SD=4.2%] vs 4.9 [SD=4.0%], p=0.03). By contrast, in IBWL+$, weight loss outcomes did not differ by income status (5.0 [SD=5.6%] vs 5.3 [SD=3.8%], p=0.80), and a similar percentage of lower- versus higher-income women achieved a ≥5% weight loss (52.6% vs 53.8%, p=0.93).

CONCLUSIONS

An Internet behavioral weight loss program plus financial incentives may be an effective strategy to promote excellent weight losses in women with lower income, thereby enhancing equity in treatment outcomes in a vulnerable, high-risk population. These data also provide important evidence to support federally funded incentive initiatives for lower-income, underserved populations.

Adapting evidence-based behavioral weight loss programs for emerging adults: A pilot randomized controlled trial

Emerging adults are at high risk of obesity but behavioral weight loss programs do not meet their needs. Emerging adults ( N = 52, age = 22.3 ± 2 years, body mass index = 34.2 ± 5.5 kg/m², 46.2% non-Hispanic White) were randomly assigned to one of three behavioral weight loss programs adapted based on formative work: face-to-face behavioral weight loss, web-based behavioral weight loss, or web plus optional community sessions (Hybrid). Assessments occurred at 0 and 3 months. Engagement and self-monitoring were highest in Hybrid. Intent-to-treat weight losses were -2.8 ± 2.9 percent in face-to-face behavioral weight loss, -2.2 ± 4.5 percent in web-based behavioral weight loss, and 4.8 ± 4.9 percent in Hybrid. Percent achieving ⩾5 percent weight loss was highest in Hybrid (63%). Findings suggest potential for adapted behavioral weight loss to promote engagement and weight loss in emerging adults.

Secondary data analysis from a randomized trial examining the effects of small financial incentives on intrinsic and extrinsic motivation for weight loss

Objectives

To examine whether (a) an obesity treatment involving financial incentives yields higher levels of extrinsic motivation for weight management compared to an identical intervention without incentives, (b) extrinsic motivation for weight management mediates, or accounts for, the difference in weight loss outcomes between the two interventions, and (c) there is any evidence that financial incentives and associated extrinsic motivation "crowd out" intrinsic motivation for weight control.

Methods

Participants (N=153, 80.4% Female; BMI = 33.2 ± 5.9) were randomly assigned to a 3-month Web-based behavioral weight loss program (WBWL) or the same program plus small financial incentives delivered consistent with behavioral economics and behavior change theories (WBWL+$). Weight was objectively assessed at baseline, post-treatment (month 3), and after a 9-month no-treatment follow-up phase (month 12). Intrinsic and extrinsic motivation for weight management were assessed at months 3 and 12 using a modified version of the Treatment Self-Regulation Questionnaire, with questions added to specifically target extrinsic motivation related to incentives.

Results

Compared to WBWL alone, WBWL+$ had better weight loss and higher levels of both extrinsic and intrinsic motivation for weight management (p's≤.02). Moreover, during the no-treatment follow-up phase, the trajectories of weight regain did not significantly differ between WBWL and WBWL+$ (p=.58). Extrinsic motivation was not a significant mediator of treatment outcomes.

Conclusions

Modest financial incentives delivered consistent with behavioral economics and behavior change theories do not undermine intrinsic motivation for weight management during obesity treatment; in fact, they yield higher levels of both extrinsic and intrinsic motivation. Additional research is needed to better understand the mechanisms by which incentives improve outcomes in health behavior change interventions.

A mixed methods approach to improving recruitment and engagement of emerging adults in behavioural weight loss programs

Objective

Emerging adults ages 18–25 are at high risk for obesity, but are markedly underrepresented in behavioural weight loss (BWL) programs and experience lower engagement and retention relative to older adults.

Purpose

To utilize a mixed methods approach to inform future efforts to effectively recruit and engage this high‐risk population in BWL programs.

Methods

We used a convergent parallel design in which quantitative and qualitative data were given equal priority. Study 1 (N = 137, age = 21.8 + 2.2, BMI = 30.1 + 4.7) was a quantitative survey, conducted online to reduce known barriers and minimize bias. Study 2 (N = 7 groups, age = 22.3 + 2.2, BMI = 31.5 + 4.6) was a qualitative study, consisting of in person focus groups to gain greater depth and identify contextual factors unable to be captured in Study 1.

Results

Weight loss was of interest, but weight itself was not a central motivation; an emphasis on overall lifestyle, self‐improvement and fitness emerged as driving factors. Key barriers were time, motivation and money. Recruitment processes should be primarily online with messages tailored specifically to motivations and preferences of this age group. Preferences for a program were reduced intensity and brief, hybrid format with some in‐person contact, individual level coaching, experiential learning and peer support. Key methods of promoting engagement and retention were autonomy and choice, money and creating an optimal default.

Conclusions

An individually tailored lifestyle intervention that addresses a spectrum of health behaviours, promotes autonomy and emphasizes activity and fitness may facilitate recruitment and engagement in this population better than traditional BWL protocols.

Innovative Self-Regulation Strategies to Reduce Weight Gain in Young Adults: The Study of Novel Approaches to Weight Gain Prevention (SNAP) Randomized Clinical Trial

IMPORTANCE

Weight gain occurs commonly in young adults and has adverse effects on health.

OBJECTIVE

To compare 2 self-regulation interventions vs control in reducing weight gain in young adults over a mean follow-up of 3 years.

DESIGN, SETTING, AND PARTICIPANTS

Randomized clinical trial in 2 academic settings of 599 participants aged 18 to 35 years with body mass index (BMI, calculated as weight in kilograms divided by height in meters squared) of 21.0 to 30.0, recruited via mailings and emails from August 2010 to February 2012. Data were analyzed from January 2015 to January 2016.

INTERVENTIONS

Participants were randomized to control, self-regulation plus small changes, or self-regulation plus large changes. Both interventions focused on frequent self-weighing to cue behavior changes. "Small changes" taught participants to reduce intake and increase activity, both by approximately 100 calories per day. "Large changes" focused on losing 2.3 to 4.5 kg initially to buffer against expected weight gain.

MAIN OUTCOMES AND MEASURES

Changes in weight from baseline over mean follow-up of 3 years. Secondary outcomes included proportion gaining at least 0.45 kg from baseline, proportion developing obesity (BMI, ≥30.0), and weight change baseline to 2 years.

RESULTS

Among the 599 participants (22% men; 27% minority; mean [SD] age, 27.7 [4.4] years; mean [SD] BMI, 25.4 [2.6]), mean (SE) weight changes over a mean follow-up of 3 years were 0.26 (0.22), -0.56 (0.22), and -2.37 (0.22) kg in the control, small-changes, and large-changes groups, respectively (P < .001). Differences among all 3 groups were significant (large changes vs control, P < .001; small changes vs control, P = .02; large changes vs small changes, P < .001). On secondary outcomes, both interventions significantly reduced incidence of obesity relative to control (mean [SE], 8.6% [2.0%], 7.9% [2.0%], and 16.9% [2.7%] in the large-changes, small-changes, and control groups, respectively; P = .02 for large changes vs control and P = .002 for small changes vs control); a smaller percentage of participants in the large-changes group gained 0.45 kg or more (mean [SE], 23.6% [2.8%], 32.5% [3.8%], and 40.8% [4.4%], respectively; P < .001 vs control and P = .02 vs small changes) and weight change from baseline to 2 years was greater in control than in small or large changes (mean [SE], 0.54 [0.33], -0.77 [0.33], and -1.50 [0.34] kg, respectively; P = .02 vs small changes and P < .001 vs large changes).

CONCLUSIONS AND RELEVANCE

Self-regulation with large or small changes both reduced weight gain in young adults over 3 years relative to control, but the large-changes intervention was more effective.

TRIAL REGISTRATION

clinicaltrials.gov Identifier: NCT01183689.