The Muscle Appearance Satisfaction Scale: A factorial analysis of validity and reliability for its use on adult Chinese male weightlifters

• A 17-item MASS was developed for assessing MD in adult Chinese males.
• The internal consistency for the whole scale and subscales are acceptable.
• Factor analyses confirmed the 5-factor model obtained with the original MASS.
• Muscle checking was the foremost symptoms for surveyed participants.

Muscle dysmorphia (MD) is the distorted perception of men's own muscle appearance. The increasing popularity of weightlifting in Chinese men suggests the presence of MD. The study assessed the validity and reliability of the Muscle Appearance Satisfaction Scale (MASS) for its use on adult Chinese males. Exploratory and confirmatory factor analyses of responses from 225 and 592 participants confirmed the same five factors for the 17-item Chinese version as the original MASS (CFI = .931, RMSEA = .052). The internal consistency for all factors were acceptable (Cronbach's α = .636 to .737). Correlation levels of its subscales with converging measurements indicated that the revised MASS is effective in assessing MD in Chinese male weightlifters. Differences in the importance of the factors suggest an influence of Chinese culture in the symptoms of MD and the need of assessing the MASS with populations from distinct demographics in China and from different cultures.