The goal of this observational study is to analyze the validity of self-reported physical activities in obese patients with psychosomatic disorders in a clinical setting. The main question aims to answer: \- How valid are self-reported physical activity data (via the International Physical Activity Questionnaire, IPAQ-SF) compared to actigraphy-based objective measurements (using the SenseWear® armband, SWA)? Between 2020 and 2022, 23 patients with obesity (21 anorexia nervosa, 2 bulimia nervosa) were recruited from an Austrian psychosomatic clinic. Receiving routine care, participants were additionally asked to * wear the SWA for seven days in the clinic * complete the IPAQ-SF for the same reference period on the first weekday after SWA wearing time The study then statistically compared total physical activity, measured in so called metabolic equivalents (MET minutes per week), and sitting time (minutes per day) between the two methods to determine the accuracy of the self-reported data.
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MET (Metabolic equivalents) - Objective measure of physical activity in MET min/week (by SWA)
Timeframe: Period: SWA was worn for at least four days within week 3 or week 4 of clinical stay
MET (Metabolic equivalent) - Subjective measure of physical activity in MET min/week (by IPAQ self-report)
Timeframe: Single time point: Retrospective self-report on the first weekday after SWA wearing time