Abstract
Background and aims: The Exercise Addiction Inventory (EAI), based on the components model addictions, is a 6-item instrument used to assess the risk of exercise addiction (REA). Its revised version (EAI-R) was published in 2019 but only differed from the original scale in the response rating range (using a 6-point rather than 5-point Likert scale). In 2023, the EAI-3 was released with two new items (guilt when missing training and exercising despite injury). We aimed to test the validity and reliability of the Hungarian EAI-3 (EAI-3-HU). Methods: We tested 507 regular exercisers (Mage = 38.7 years, SD age = 10.63 years, range age: 18–78 years; 62.7% females) who completed the EAI-3-HU, the obsessive passion subscale of the Passion Scale, and exercise habits questions on the online Qualtrics research platform during autumn/winter 2023–2024. Results: Confirmatory factor analysis resulted in a good model fit for the two factor EAI-3-HU (CFI = .96; TLI = .94; RMSEA = .07; SRMR = .04). However, the covariance between the latent factors was .97, indicating that they measure an identical concept. Thus, a single-factor solution was appropriate (CFI = .96; TLI = .94; RMSEA = .07; SRMR = .04). Testing measurement invariance revealed the partial scalar invariance across genders. The internal reliability of the scale was good (Cronbach’s α = .81). The scale had good convergent validity with obsessive passion (r = .72), and discriminant validity based on exercise frequency as well as exercise intensity (p < .001). Conclusion: The 8-item single factor EAI-3-HU adequately assesses the Hungarian samples’ REA. Nevertheless, it should be kept in perspective that the revised tool, like its predecessors, only assesses a level of ‘risk’, which does not imply morbidity, thus it has no clinical diagnostic value.
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