Abstract:
AIM:To investigate the complex relationships between resting energy expenditure (REE), eating psychopathology, and Hypothalamus Pituitary Adrenal axis functioning in patients with eating disorders. METHODS:The study was designed as a cross-sectional survey, and it was planned by the Clinic for Eating Disorders of the University of Florence (Italy). The protocol was approved by the Ethics Committee of the Institution. Twenty two anorexia nervosa and twenty one Bulimia Nervosa patients were assessed by means of a clinical interview and the structured clinical interview for diagnostic and statistical manual of mental disorders, fourth edition. Eating attitudes and behaviour were specifically investigated by means of the eating disorder examination questionnaire (EDE-Q). Patients were also evaluated by means of the symptom checklist (SCL 90-R), REE was measured by means of indirect calorimetry, and blood cortisol morning levels were evaluated. RESULTS:Both anorexia nervosa and bulimia nervosa patients showed a reduced REE as compared with predicted REE. Body mass index (BMI) was positively associated with resting energy expenditure in Bulimics, whereas a strong, negative association between BMI and REE was observed in Anorectics. The pattern of associations between variables supported a mediation model, where shape concern accounted for variations in REE and cortisol levels (mediator), and variations in the mediator significantly accounted for variations in REE. When these associations where taken into account together, the relationship between shape concern and REE was no longer significant, whereas the association between cortisol levels and REE retained its significance, showing strong evidence for a single, dominant mediator. Anorectics and Bulimics showed an opposite pattern of association between BMI and REE. In Anorectics only, a higher REE was associated with a more severe eating disorder specific psychopathology, and cortisol levels represent a possible mediating factor for this relationship. CONCLUSION:The data supported a mediation model where cortisol levels mediated the relationship between eating psychopathology (concern about body shape) and REE.
journal_name
World J Clin Casesjournal_title
World journal of clinical casesauthors
Castellini G,Castellani W,Lelli L,Sauro CL,Dini C,Lazzeretti L,Bencini L,Mannucci E,Ricca Vdoi
10.12998/wjcc.v2.i7.257subject
Has Abstractpub_date
2014-07-16 00:00:00pages
257-64issue
7issn
2307-8960journal_volume
2pub_type
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journal_title:World journal of clinical cases
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journal_title:World journal of clinical cases
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