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IntroductionThe Diagnostic and Statistical Manual of Mental Disorders-5 (DSM-5) introduced severity indices for Eating Disorders (ED).ObjectivesThis study assessed in a male ED sample the DSM-5 severity indices for Anorexia Nervosa (AN), Bulimia Nervosa (BN) and Binge Eating Disorder (BED) and compared them to an alternative transdiagnostic drive for thinness (DT) severity category and a combined DSM-5/DT severity categorizationMethods178 males with EDs were classified using: a.) a DT categorisation based on the EDI-2 DT subscale; b.) the DSM-5 severity categories for AN, BN and BED and c.) a combination of the DT and the DSM-5 severity categorisation. These severity classifications were then compared based on psychopathology and personality.ResultsFor the DSM-5 severity indices, the “mild” category was most prevalent for AN and BN, and the “moderate to extreme” group for BED. For the EDI-2 DT severity classification, the “mild” category was overrepresented in all subtypes. For the combined DSM-5/DT categorization, the “mild combined” severity group was the most prevalent for AN, while for BN and BED the “severe/extreme” combined group was most prevalent. Clinically significant findings were strongest for the DT categorization followed by the combined DSM-5/DT approach. Almost non-significant findings were revealed for the DSM-5 severity categories for all ED subtypes. These findings were most pronounced for AN and BN and almost non-existent for BED.ConclusionsOur findings provide support for DT as an alternative transdiagnostic severity category for EDs in males that may be more meaningful than the DSM-5 severity indices for AN and BN, but not BED.DisclosureNo significant relationships.

ObjectiveElevated physical activity has been observed in some patients with anorexia nervosa (AN) despite their emaciated condition. However, its effects on treatment outcome remain unclear. This study aimed to examine objectively measured physical activity in this clinical population and how it might be related to a partial hospitalization therapy response, after considering potential confounders.MethodThe sample comprised 88 AN patients consecutively enrolled in a day hospital treatment program, and 116 healthy-weight controls. All participants were female and a baseline assessment took place using an accelerometer (Actiwatch AW7) to measure physical activity, the Eating Disorders Inventory-2 and the Depression subscale of the Symptom Checklist-Revised. Outcome was evaluated upon the termination of the treatment program by expert clinicians.ResultsAlthough AN patients and controls did not differ in the average time spent in moderate-to-vigorous physical activity (MVPA) (P = .21), nor daytime physical activity (P = .34), fewer AN patients presented a high physical activity profile compared to the controls (37% vs. 61%, respectively; P = .014). Both lower levels of MVPA and greater eating disorder severity had a direct effect on a poor treatment outcome. Depression symptoms in the patients were associated with lower MVPA, as well as with an older age, a shorter duration of the disorder and greater eating disorder psychopathology.ConclusionsThere is a notable variation in the physical activity profile of AN patients, characterized by either low or very high patterns. Physical activity is a highly relevant issue in AN that must be taken into account during the treatment process.

Background and aims:Despite the high prevalence of EDNOS only a small proportion of individuals with this disorder seek treatment, which may be due in part to difficulties in finding specialized treatment settings for EDNOS and the high costs and logistics associated with face-to-face individual psychotherapy. This omission is critical since there is evidence that the severity of psychopathology and degree of secondary psychosocial impairment in those with EDNOS are comparable to those seen in patients with anorexia nervosa (AN) or bulimia nervosa (BN). There has been hardly any research on the treatment of atypical EDs other than the promising effort on BED, for which Cognitive Behavior Therapy (CBT) is proposed to be the most effective treatment. The aim of this presentation is to show several pilot studies and our experience of treating EDNOS cases, but also to analyze variables associated to good-outcome.Method:We performed several clinical studies with EDNOS patients at the University Hospital of Bellvitge to assess the effectiveness and efficiency of specific outpatient CBT programs of short and long term duration.Results and conlusions:The few case-control studies where the effect of diagnosis on the prognosis has been analyzed have shown differential course and outcome in EDs. EDNOS (with exception of BED) showed the poorest long-term prognosis, due to their heterogeneity and, in many cases, to their lower motivation to change. Specific therapy programs, based on our experience, will be discussed.