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Background: Among muscular dysmorphia (MD) literature, two variables have become key in its prediction: self-esteem and emotional regulation. However, studies considering both variables at a time are scarce. The aim of current research is to assess the relation among these variables and MD, exploring different theoretical approaches or models: 1) a direct relation between MD and emotional regulation, and an indirect one between MD and self-esteem, mediated by the emotional regulation; 2) a direct relation between MD and emotional regulation, and both a direct and an indirect relation with selfesteem, mediated by emotional regulation; 3) a direct relation between MD and self-esteem, and an indirect one between MD and emotional regulation, mediated by self-esteem; and 4) a direct relation between MD and self-esteem, and both a direct and an indirect relation between MD and emotional Una aproximación con modelos competitivos a la dismorfia muscular © Psy, Soc, & Educ, 2018, Vol. 10(3) 326 regulation, mediated by self-esteem. Methods: 251 university students participated in the study (72.7% were women). Mean age was 21.31 years old (SD = 2.52). Results: Among the tested models, model 2 showed better fit: χ= 112.605, df= 42, p < .001; CFI= .916; RMSEA= .082 (IC= .064, .101); SRMR = .064; AIC= 5484.284; and, thus, it was retained as the best representation of the data. Conclusions: Selfesteem and emotional regulation, although both being predictors of MD, showed different relations with it: whereas self-esteem predicted direct and indirectly MD, mediated by emotional regulation, with great predictive power, emotional regulation only showed a direct relation, of smaller size.

Una aproximación con modelos competitivos a la dismorfia muscular: El papel de la autoestima y la regulación emocional