Psychometric Properties of the Commitment to Exercise Scale in Inpatients With Anorexia Nervosa and Bulimia Nervosa.
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| Title: | Psychometric Properties of the Commitment to Exercise Scale in Inpatients With Anorexia Nervosa and Bulimia Nervosa. |
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| Authors: | Fabry, Fiona M. (AUTHOR), Schlegl, Sandra (AUTHOR), Dittmer, Nina (AUTHOR), Voderholzer, Ulrich (AUTHOR), Kolar, David R. (AUTHOR), Meule, Adrian (AUTHOR) |
| Source: | European Eating Disorders Review. Jul2026, Vol. 34 Issue 4, p1121-1129. 9p. |
| Subjects: | Bulimia, Exercise, Patients, Hospital care, Research methodology evaluation, Hospital admission & discharge, Research evaluation, Discharge planning, Descriptive statistics, Eating disorders, Psychometrics, Anorexia nervosa, Health behavior, Research methodology, Commitment (Psychology), Data analysis software, Factor analysis |
| Abstract: | Objective: Compulsive exercise is a common behaviour among persons with eating disorders, particularly in those with anorexia nervosa (AN) and bulimia nervosa (BN). In the current study, we examined psychometric properties of a German version of the eight‐item Commitment to Exercise Scale (CES) with a four‐point scale response format. Method: Data of N = 2424 persons with AN and BN who completed the CES among other measures as part of the routine diagnostic assessment at admission to and discharge from inpatient treatment were analysed based on a preregistered protocol (https://doi.org/10.17605/OSF.IO/Z2RYW). Results: The CES had high internal consistency and a one‐factor structure with measurement invariance across age and diagnostic groups. Large correlations with other measures of compulsive exercise supported convergent validity and small‐to‐moderate correlations with other measures supported divergent validity. Scores on the CES were sensitive to change as they moderately decreased during inpatient treatment, with changes in compulsive exercise being larger in males and persons with AN that in females and persons with BN. Conclusions: The CES has sound psychometric properties in persons with AN and BN. Given its brevity, it may be favoured over lengthier instruments for assessing compulsive exercise in research and clinical practice. Highlights: This German version of the Commitment to Exercise Scale showed high reliability and a stable one‐factor structure across age and diagnostic groups.Convergent and divergent validity were supported through expected correlation patterns with related and unrelated constructs.The scale detected meaningful reductions in compulsive exercise during inpatient treatment, with variation in change across sex and diagnoses. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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