A randomized controlled trial to evaluate the acceptability and effectiveness of two eating disorders prevention interventions: the HEIDI BP-HW project

BMC Women's Health · 3 authors, 2 centres

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TL;DR

A three-arm RCT randomized 40 female students with body dissatisfaction into a Body Project group, a Healthy Weight group, or a waiting-list control. Both interventions significantly reduced body dissatisfaction compared to controls, with large effect sizes maintained at one-month follow-up.

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Thirty-three participants completed pre- and post-assessments. Interventions were delivered virtually in small groups of up to six. Both interventions significantly reduced body dissatisfaction compared to the waiting-list control, with large effect sizes (BP: r=0.7; HW: r=0.6; both p<0.01). Post-intervention scores were stable at one-month follow-up. Both interventions were rated as acceptable. However, recruitment was difficult, partly due to the pandemic, and the small sample size limits the generalizability of these preliminary findings.

STUDY TYPE

RCT

SPECIALTY

psychiatry

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AI pipeline

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ORIGINAL PAPER

PMC10463671

A randomized controlled trial to evaluate the acceptability and effectiveness of two eating disorders prevention interventions: the HEIDI BP-HW project

BMC Women's Health

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ABSTRACT

Abstract Background Eating disorders (ED) are common in Switzerland, as in other Western countries, with a prevalence of any ED of 3.5%. However, no specific prevention intervention has been evaluated in the French-speaking part of the country. In this study, we assessed the acceptability and effectiveness of two well-validated eating disorders prevention interventions: the Body Project intervention (BP), based on cognitive dissonance techniques, and the Healthy Weight intervention (HW), based on the implementation of a healthy lifestyle. Methods Forty female students, aged 18–28, with body dissatisfaction, were randomized into three arms: a BP group, an HW group, and a waiting-list control group (WLCG). The primary outcome measure was body dissatisfaction. Secondary outcomes were thin-ideal internalization, dietary restraint, negative affect, and ED psychopathology. Thirty-three participants completed the assessments before and after the one-month interventions or waiting period. A follow-up measurement was conducted one month after the interventions to assess the stability of the results. Results Both interventions, delivered via a virtual web platform, were considered acceptable. The reduction in body dissatisfaction was greater in the BP group (r = 0.7; p < 0.01) or the HW group (r = 0.6; p < 0.01) than in the WLCG, with large effect sizes. Dietary restraint and shape concern were also significantly reduced in the BP group (r = 0.6 and r = 0.7, respectively; p < 0.01) and HW group (r = 0.5 and r = 0.5, respectively; p < 0.05) compared to the WLCG, with moderate to large effect sizes. The results obtained in each intervention group were stable at the one-month follow-up. Conclusions This study showed encouraging results in young women with body dissatisfaction, arguing in favor of the French adaptations of the BP and HW interventions. However, the feasibility of recruitment was difficult, partly due to the pandemic situation at the time of the study, and should be further considered to improve dissemination. Trial registration ClinicalTrials.gov Identifier: NCT04558073 , 22/09/2020 and Swiss National Clinical Trial Portal (SNCTP000003978). Supplementary Information The online version contains supplementary material available at 10.1186/s12905-023-02607-6. Keywords: Eating disorders, Prevention, Body dissatisfaction, Cognitive dissonance, Healthy lifestyle

CITATION EXPORT

Isabelle Carrard, Sezen Cekic, Sophie Bucher Della Torre. A randomized controlled trial to evaluate the acceptability and effectiveness of two eating disorders prevention interventions: the HEIDI BP-HW project. BMC Women's Health. (2023). https://doi.org/10.1186/s12905-023-02607-6

AUTHORS

3 · 2 CENTRES

Isabelle Carrard, Sezen Cekic, Sophie Bucher Della Torre

1Department of Nutrition and dietetics, Geneva School of Health Sciences, HES-SO University of Applied Sciences and Arts Western Switzerland, Geneva, Switzerland
2Department of Psychology, University of Geneva, Geneva, Switzerland