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Randomized Controlled Trial
. 2024:46:e20233384.
doi: 10.47626/1516-4446-2023-3384. Epub 2024 Jan 15.

A randomized controlled trial of a dissonance-based eating disorder prevention intervention for body-dissatisfied Brazilian men: results from a 1-year follow-up

Maurício Almeida  1 , Tiffany A Brown  2 , Priscila Figueiredo Campos  3 , Thaina Richelli Oliveira Resende  3 , Pedro Henrique Berbert de Carvalho  1
Affiliations
Randomized Controlled Trial

A randomized controlled trial of a dissonance-based eating disorder prevention intervention for body-dissatisfied Brazilian men: results from a 1-year follow-up

Maurício Almeida et al. Braz J Psychiatry. 2024.

Abstract

Objective: To test the efficacy of a dissonance-based (DB) intervention in targeting risk factors for eating disorders (EDs) and predisposing factors for muscle dysmorphia (MD) symptoms in body-dissatisfied Brazilian men over 1 year of follow-up and evaluate whether reductions in body-ideal internalization would mediate the intervention's impact on ED and MD symptoms.

Methods: Participants were randomized to a two-session DB intervention (n=89) or assessment-only control (AOC) (n=91), and completed validated measures assessing body-ideal internalization, body dissatisfaction, ED, and MD symptoms at baseline, post-intervention, 1-month, 6-month, and 1-year follow-ups.

Results: The DB condition showed significantly greater reductions in MD symptoms and body dissatisfaction compared with the AOC group over a 1-year follow-up, while significant differences were not observed for body-ideal internalization and ED symptoms. Changes in body-ideal internalization from baseline to 1-month follow-up completely mediated the relationship between condition and the changes observed in both ED and MD symptoms.

Conclusion: These results provide further evidence of the efficacy of the tested intervention through 1-year follow-up in reducing body dissatisfaction and MD symptoms, but no such result was observed for body-ideal internalization and EDs. Our findings provide support for theoretical models of eating pathology and MD symptoms in Brazilian men.

Keywords: Body image; body dysmorphic disorders; feeding and eating disorders; men; young adult.

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Conflict of interest statement

The authors report no conflicts of interest.

Figures

Figure 1
Figure 1. Consolidated Standards of Reporting Trials (CONSORT) chart detailing participant flow through the study. AOC = assessment-only control; DB = dissonance-based.
See this image and copyright information in PMC

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