Psychometric propierties of the Muscle Appearance Satisfaction Scale (MASS) in Mexican men Propiedades psicométricas del instrumento Muscle Appearance Satisfaction Scale (MASS) en hombres

Abstract

The aim of this investigation was to evaluate the psychometric properties in a sample of Mexican men of Muscle Appearance Satisfaction Scale instrument (MASS; Mayville, Williamson, White, Netemeyer, & Drab, 2002), created for the purpose of assessing symptoms of muscle dysmorphia. The sample consisted of 521 male Mexican high school (n = 198) and university (n = 277) with an age range of 14-25 years (x =19.06 S.D.=2.60).). The results show that the Mexican version has a total alpha of .91. Unlike the original scale had 5 factors, this version introduced a structure of four factors explaining 66.34% of the total variance, which were: 1) injury and muscular test (α = .90), 2) use substance (α = .83), 3) Unit to exercise (α = .80) and 4) muscle satisfaction (α = .77). It can be concluded that the MASS, where Mexican version, has good psychometric properties and is useful for assessing symptoms of Muscle Dimorphic Disorder (MDD) in Mexican men.