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Résumé :
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Background and aims : The internalization of ideal hypermuscular body and pro-muscularity media's influence have shown their importance in muscle dysmorphia development. The aim of the current study is to have a better understanding of links between specific body checking behaviors and muscle dysmorphia in social network context. Methods : In total, 342 students practicing weightlifting at the university gym in Bordeaux answered to a survey with sociodemographic information and body checking symptoms including taking specific selfies of muscles and muscularity “Muscle Pics” and the MDDI (Muscle Dysmorphic Disorder Inventory). Results : Muscle dysmorphia was prevalent in 18.7% of our population (64 students). We observed that muscle dysmorphia was correlated to 'Muscle Pics', 'Follow-up', 'Message', 'Selfie', and gym mirror checking with significant results (P < 0.01). Also, 'Muscle Pics' were linked to APEDs use, pro-muscularity websites, fitness model comparison and gym mirror checking (P < 0.01). For muscle dysmorphia, 'Muscle Pics' have strong predictive results (OR = 5.10, P = 0.000) and (OR = 4.08, P = 0.000) for adjusted. 'Follow up' (OR = 4.76, P = 0.000) and (OR = 3.83, P = 0.000) for adjusted, 'Muscle Pics Selfie' (OR = 11.20, P = 0.000) and (OR = 11.55, P = 0.000) for adjusted, 'Muscle Pics Message' (OR = 4.49, P = 0.001) and (OR = 5.78, P = 0.001) for adjusted. Conclusion : 'Muscle Pics' showed several links with muscle dysmorphia for global score 'drive for size', 'functional impairment' but not for 'appearance intolerance' dimension. Pro-muscularity websites, fitness model comparisons and gym mirror checking are linked to muscle dysmorphia and 'Muscle Pics'. Future research on 'Muscle Pics' will help to provide a better understanding of muscle dysmorphia and its link with pro-muscularity influence websites. [résumé d'auteur]
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!['Muscle Pics', a new body-checking behavior in muscle dysmorphia? ['Muscle Pics', un nouveau comportement de vérification corporelle dans la dysmorphie musculaire ?]](https://bibliotheques.ghu-paris.fr/img_cache/ghuparis_record_153412.webp)
