Serbian Version of Exercise Dependence Scale-Revised: Psychometric Analysis

The aim of the study was to evaluate the factorial validity and reliability of the Serbian version of the Exercise Dependence Scale-Revised (EDS-R). The sample of participants consisted of 222 students from the Faculty of Sport and Physical Education, including 164 male participants and 58 female participants. All participants were over 18 years of age and reported engaging in exercise with a frequency ranging from 3 to 7 sessions per week. The main statistical analysis for this study was conducted using confirmatory factor analysis (CFA). The results indicate good overall reliability of the complete inventory (α > .82), while the reliability of individual subscales ranges from .56 to .84. The results of the confirmatory factor analysis demonstrate that the model nearly aligns with the established fit indices (χ² = 600.299; df = 168; p < 0.001; CFI = .891; NFI = .935; RMSEA = .093). The seven factors collectively explained 73.1% of the variance, with the first factor accounting for 16.4%, the second for 12.7%, the third for 11.1%, the fourth for 10.9%, the fifth for 8.3%, the sixth for 8.0%, and the seventh factor for 5.7% of the variance. The Serbian version of the Exercise Dependence Scale-Revised demonstrates solid psychometric properties, with acceptable fit indices that suggest its relevance for assessing exercise dependence within this population.