ABSTRACT
ABSTRACT Background. Due to the different factorial models available for the Social Physique Anxiety Scale (SPAS), a psychometric study is needed to identify the most appropriate structure of the scale for a Brazilian sample. Objectives: to estimate the psychometric properties of the SPAS when applied to a sample of Brazilian adults and to explore a factorial model for the instrument. Methods. First, the original SPAS single-factor model was assessed for the total sample through confirmatory factor analysis (CFA). The total sample was randomly divided into two groups. Exploratory factor analysis was carried out in one of the subsamples to identify underlying factors. The new structure was submitted to CFA using the other subsample. Estimates of convergent validity, discriminant validity, and reliability were also calculated. Results: 979 adults with a mean age of 26.09 (SD = 6.37) years participated in the study, 70.5% of whom were women. A two-factor model was found in the exploratory analysis with adequate validity indexes and good reliability. Discussion/Conclusion: A two-factor model of the SPAS presented good indicators of validity and reliability for young Brazilian adults.
ABSTRACT
Abstract Objectives Our study was conducted to adapt the Body Image and Body Change Inventory (BIBCI) for Portuguese; to evaluate the BIBCI's psychometric properties in samples of university students; to calculate the prevalence of strategies for eating and body change among students; and to evaluate the impact of demographic, social, and anthropometric characteristics on the BIBCI subscales. Methods 798 students (women = 63%) answered the Portuguese translation of the BIBCI and answered a demographic questionnaire. All analyses were performed separately for women and men. The BIBCI's psychometric properties were estimated using confirmatory factor analysis. Mean scores were calculated for each BIBCI subscale. A multivariate regression model was tested to evaluate the impact of demographic, social, and anthropometric characteristics on mean BIBCI subscale scores. Results The psychometric properties of the BIBCI were adequate in the samples analyzed. The BIBCI subscales scores did not differ according to sex. According to the cut-off points adopted, most of the students were classified in the very low category of the BIBCI subscales. For women, characteristics such as self-reported eating assessment, economic class, physical activity level, and work were significant. For men, only physical activity level was significant. Conclusion The Portuguese translation of the BIBCI was presented and its psychometric properties were found to be adequate in the samples analyzed. The models identified significant characteristics that can be used in intervention protocols for preventing inappropriate behaviors in relation to body image and eating.