Validation of the Muscle Dysmorphic Disorder Inventory (MDDI) in Brazilian Women

Author(s)

Nagata, Jason M. ; Junqueira, Alessandra Costa Pereira ; Cattle, Chloe J. ; Carvalho, Pedro Henrique Berbert de ; Bagolin, Vitoria ; Murray, Stuart B. ; Compte, Emilio J. ; Costa, Telma Maria Braga ; Almeida, Sebastiao de Sousa ; Laus, Maria Fernanda

• Document type: Journal article
• Source: BODY IMAGE; v. 41, p. 9-pg., 2022-06-01.

Abstract

Despite high levels of body dissatisfaction and an increasing drive for muscularity among Brazilian women, most of the existing literature on muscle dysmorphia focuses on men and has mainly been conducted in Western and English-speaking regions. As a result, one of the most widely used assessment tools for symptoms of the disorder, the Muscle Dysmorphic Disorder Inventory (MDDI), has not yet been evaluated in Brazilian women-an at-risk population. In the present study, we perform a psychometric evaluation of the Brazilian Portuguese translation of the MDDI in a sample of 515 women. We evaluated the factor structure using a two-step, split-sample exploratory and confirmatory factor analytic approach, which supported the original three-factor structure of the measure. Additionally, we found good internal consistency, convergent validity, and test-retest reliability of the measure. Collectively, these results support the use of the measure in Brazilian women and provide a foundation to expand the literature in this population.(c) 2022 The Author(s). Published by Elsevier Ltd.CC_BY_NC_ND_4.0 (AU)

• FAPESP's process: 20/11291-0 - Validation study of the Brazilian version of the Muscularity-Oriented Eating Test (MOET) in young adults of both sexes
• Grantee: Vitória Bagolin
• Support Opportunities: Scholarships in Brazil - Scientific Initiation