Targeting dietary restraint to reduce binge eating: a randomised controlled trial of a blended internet-and smartphone app-based intervention
Open accessAbstract
BACKGROUND: Existing internet-based prevention and treatment programmes for binge eating are composed of multiple distinct modules that are designed to target a broad range of risk or maintaining factors. Such multi-modular programmes (1) may be unnecessarily long for those who do not require a full course of intervention and (2) make it difficult to distinguish those techniques that are effective from those that are redundant. Since dietary restraint is a well-replicated risk and maintaining factor for binge eating, we developed an internet- and app-based intervention composed solely of cognitive-behavioural techniques designed to modify dietary restraint as a mechanism to target binge eating. We tested the efficacy of this combined selective and indicated prevention programme in 403 participants, most of whom were highly symptomatic (90% reported binge eating once per week). METHOD: = 202). The primary outcome was objective binge-eating frequency. Secondary outcomes were indices of dietary restraint, shape, weight, and eating concerns, subjective binge eating, disinhibition, and psychological distress. Analyses were intention-to-treat. RESULTS: Intervention participants reported greater reductions in objective binge-eating episodes compared to the control group at post-test (small effect size). Significant effects were also observed on each of the secondary outcomes (small to large effect sizes). Improvements were sustained at 8 week follow-up. CONCLUSIONS: Highly focused digital interventions that target one central risk/maintaining factor may be sufficient to induce meaningful change in core eating disorder symptoms.
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This is noteworthy given the sub-clinical level of dietary restraint in this sample but aligns with evidence suggesting regular eating may be the most potent mechanism behind reductions in OBEs in CBT-based interventions in transdiagnostic non-underweight ED samples.
“This is noteworthy given the sub-clinical level of dietary restraint in this sample but aligns with evidence suggesting regular eating may be the most potent mechanism behind reductions in OBEs in CBT-based interventions in transdiagnostic non-underweight ED samples (53, 55).”
From The acceptability, feasibility, and preliminary efficacy of a supported online self-help treatment program for binge-eating disorder (2023) · cites this paper as [55]
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- Authors
- Linardon, J., Messer, M., Shatte, A., Skvarc, D., Rosato, J., Rathgen, A., & Fuller-Tyszkiewicz, M.
- Affiliations
- Deakin University (AU)
- Federation University (AU)
- Corresponding author
- Linardon, Jake
- Venue
- Psychological Medicine
- Publisher
- Cambridge University Press (CUP)
- Published
- 2021-07-12
- Volume
- 53
- Issue
- 4
- Pages
- 1277-1287
- ISSN
- 0033-2917 (ISSN-L)
- 1469-8978
- OpenAlex
- W3178135152
- Cited by
- 36
- References
- 46
- Citations by year
- 2026: 4 · 2025: 13 · 2024: 5 · 2023: 3 · 2022: 8 · 2021: 3
- FWCI
- 3.24
- Type
- journal article
- Language
- en
- Open access
- green
- figshare.com
- Licence
- Locations
- Psychological Medicine (publishedVersion)
- PubMed (publishedVersion)
- ResearchOnline - JCU (James Cook University) (submittedVersion)
- FedUni ResearchOnline (Federation University Australia) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
- Health Sciences › Nursing › Nutrition and Dietetics › Nutrition, Health and Food Behavior
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
- Keywords
- binge eating, dietary restraint, online intervention, mobile application, cognitive behavioral therapy, eating disorder prevention, binge eating frequency, eating concerns, weight concern, disinhibition, psychological distress, digital mental health interventions
- MeSH terms
- Bulimia, Humans, Cognitive Behavioral Therapy, Treatment Outcome, Internet, Binge-Eating Disorder, Mobile Applications
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