Eating disorders (EDs) are severe psychiatric conditions that cause significant health and psychosocial issues, with Anorexia Nervosa (AN) and Bulimia Nervosa (BN) having the highest mortality rates. The COVID-19 pandemic has led to an increase in ED cases, especially among children, with heightened restrictive eating and compulsive exercise. Up to 80% of individuals with AN engage in compulsive exercise, which current treatments fail to adequately address. The State Urge to be Physically Active Questionnaire (SUPA-Q) is the only validated tool for assessing activity urges in ED patients, covering cognitive, emotional, and behavioral aspects. This study aims to develop and validate an Italian version of the SUPA-Q (SUPAQ-I) in a clinical sample of ED patients. A mixed-longitudinal study design will be used, with assessments at admission (T0) and discharge (T1) to evaluate the SUPAQ-I's reliability, validity, and sensitivity to change. The sample will include patients aged 16-65 diagnosed with EDs undergoing inpatient rehabilitation. Statistical analyses will include exploratory and confirmatory factor analyses, and internal consistency will be measured using Cronbach's α and McDonald's Ω indices. Validating the SUPAQ-I will improve the assessment of activity urges in ED patients, enhancing treatment strategies and outcomes.