Education Commons^™

Study Protocol For A Randomized Controlled Trial Comparing Two Low-Intensity Weight Loss Maintenance Interventions Based On Acceptance And Commitment Therapy Or Self-Regulation, Jason Lillis, Leah Schumacher, J. Graham Thomas, Michael E. Levin, Shira Dunsiger, Jessica L. Unick, Erin Evans, Jacqueline F. Hayes, Rena R. Wing

Psychology Faculty Publications

Background: Weight regain is common following behavioral obesity treatment and attenuates many of the benefits of initial weight loss. This paper describes a randomized controlled trial that will evaluate the efficacy of two low-contact weight loss maintenance interventions based on Acceptance and Commitment Therapy (ACT) and self-regulation (SR). Potential mechanisms of action and moderators of treatment effects will also be evaluated.

Methods: Adults (anticipated N=480)with overweight or obesity will complete an initial 3-monthonline weight loss program (Phase 1). Participants who achieve ≥4 kg weight loss (anticipated N=288) will then be randomized to an ACT or SR weight loss maintenance intervention. …

Tracking Valued And Avoidant Functions With Health Behaviors: A Randomized Controlled Trial Of The Acceptance And Commitment Therapy Matrix Mobile App, Michael E. Levin, Jennifer Krafft, Seth Seifert, Jason Lillis

Psychology Faculty Publications

This randomized controlled trial evaluated the acceptability and additive effects of self- monitoring avoidant and valued functions of behavior, in the context of self-monitoring physical activity and dietary behavior in a mobile app. The self-monitoring approach was based on the Acceptance and Commitment Therapy (ACT) Matrix. A sample of 102 adults interested in improving their diet and physical activity were randomized to a Health Behavior Tracking app (HBT), HBT plus ACT matrix app (HBT+ACT), or waitlist condition. Online self-report assessments were completed at baseline, mid (2 weeks), and post-intervention (4 weeks). Participants reported high usability, but mixed satisfaction with both …

Self-Stigma And Weight Loss: The Impact Of Fear Of Being Stigmatized, Jason Lillis, J. G. Thomas, Michael E. Levin, R. R. Wing

Psychology Faculty Publications

The current study sought to examine whether two facets of weight self-stigma (fear of enacted stigma and self-devaluation) were associated with weight change and treatment engagement for 188 individuals participating in a 3-month online weight loss program. Fear of enacted stigma predicted less weight loss 3-months later after controlling for demographics, eating problems, and psychological symptoms. Self-devaluation did not predict weight loss. Neither weight self-stigma variable predicted engagement in the online program. These results add to the literature indicating the negative effects of weight self-stigma while highlighting the central role of fear of being stigmatized by others in this process.

Delivering Acceptance And Commitment Therapy For Weight Self-Stigma Through Guided Self-Help: Results From An Open Pilot Trial, Michael E. Levin, Sarah Potts, Jack Haegar, Jason Lillis

Psychology Faculty Publications

Weight self-stigma is a promising target for innovative interventions seeking to improve outcomes among overweight/obese individuals. Preliminary research suggests acceptance and commitment therapy (ACT) may be an effective approach for reducing weight self-stigma, but a guided self-help version of this intervention may improve broad dissemination. This pilot open trial sought to evaluate the potential acceptability and efficacy of a guided self-help ACT intervention, included coaching and a self-help book, with a sample of 13 overweight/obese individuals high in weight self-stigma. Results indicated a high degree of program engagement (77% completed the intervention) and satisfaction. Participants improved on outcomes over time …

The Acceptance And Commitment Therapy Matrix Mobile App: A Pilot Randomized Trial On Health Behaviors, Michael E. Levin, Benjamin G. Pierce, Benjamin Schoendorff

Psychology Faculty Publications

Mobile apps provide a promising format for delivering acceptance and commitment therapy (ACT) to improve diet/exercise. This pilot trial evaluated a novel ACT-based app for health behaviors based on the matrix approach. A sample of 23 community adults were randomly assigned to use the app for two weeks or to a waitlist condition. Findings indicated a high degree of satisfaction with the app and acceptable adherence. Although the intent-to-treat sample indicated few intervention effects, when focusing on program engagers only, health behaviors significantly improved in the app condition relative to waitlist. There were no differences between conditions on valued action …

Which Facets Of Mindfulness Are Related To Problematic Eating Among Patients Seeking Bariatric Surgery?, Michael E. Levin, Kristy Dalrymple, Susan Himes, Mark Zimmerman

Psychology Faculty Publications

There has been growing research indicating the potential positive benefits of mindfulness-based interventions for obesity, but few studies have examined the relationship of mindfulness processes to obesity-related behaviors, particularly among clinical populations such as bariatric surgery candidates. The current study examined the relationship of specific mindfulness facets to a variety of problematic eating behaviors assessed through diagnostic interviews in a clinical sample of 820 patients seeking bariatric surgery. Results indicated that greater mindfulness on specific facets, particularly acting with awareness, were related to less binge and emotional eating. Greater mindfulness was also related, though less consistently, to less habitual overeating …