title: Validity of Exercise Measures in Adults with Anorexia Nervosa: The EDE, Compulsive Exercise Test and Other Self-Report Scales.
abstract: Compulsive exercise is a prominent feature for the majority of patients with Anorexia Nervosa (AN), but there is a dearth of research evaluating assessment instruments. This study assessed the concurrent validity of the exercise items of the Eating Disorder Examination (EDE) and Eating Disorder Examination-Questionnaire (EDE-Q), with the Compulsive Exercise Test (CET) and other self-report exercise measures in patients with AN. We also aimed to perform validation of the CET in an adult clinical sample.
  
  
  
  The sample consisted of 78 adults with AN, recruited for the randomized controlled trial "Taking a LEAP forward in the treatment of anorexia nervosa." At baseline, participants completed the EDE, EDE-Q, CET, Reasons for Exercise Inventory (REI), Commitment to Exercise Scale (CES) and Exercise Beliefs Questionnaire (EBQ). Correlational and regression analyses were performed.
  
  
  
  EDE exercise days and exercise time per day were positively correlated with each other and with all CET subscales (except Lack of exercise enjoyment), CES mean, EBQ total and REI total. Exercise time per day was associated with a higher EDE global score. The CET demonstrated good concurrent validity with the CES, the REI and the EBQ. Of the self-reports, the CET explained the greatest variance in eating disorder psychopathology and demonstrated good to excellent reliability in this sample.
  
  
  
  The EDE and EDE-Q demonstrated good concurrent validity with the CET. Further research is required to evaluate the CET's factor structure in a large clinical sample. However, the CET has demonstrated strong clinical utility in adult patients with AN. © 2016 Wiley Periodicals, Inc.(Int J Eat Disord 2017; 50:533-541).
authors.affiliation: School of Psychology, University of Sydney, Sydney, Australia.
authors.forename: Sarah
authors.initials: S
authors.lastname: Young
authors.affiliation: School of Psychology, University of Sydney, Sydney, Australia.
authors.forename: Stephen
authors.initials: S
authors.lastname: Touyz
authors.affiliation: WMG, University of Warwick, United Kingdom & University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom.
authors.forename: Caroline
authors.initials: C
authors.lastname: Meyer
authors.affiliation: Institute of Mental Health, Faculty of Medicine & Health Sciences, University of Nottingham, Nottingham, United Kingdom and Leicestershire Adult Eating Disorders Service, Leicestershire Partnership NHS Trust, Bennion Centre, Glenfield Hospital, United Kingdom.
authors.forename: Jon
authors.initials: J
authors.lastname: Arcelus
authors.affiliation: School of Psychology, University of Sydney, Sydney, Australia.
authors.forename: Paul
authors.initials: P
authors.lastname: Rhodes
authors.affiliation: Sydney Children's Hospital Network, Westmead, Australia and School of Medicine, The University of Sydney, Sydney, Australia.
authors.forename: Sloane
authors.initials: S
authors.lastname: Madden
authors.affiliation: Division of Behavioral Health Services and Policy Research, Columbia University, New York.
authors.forename: Kathleen
authors.identifier: 0000-0003-4584-4250
authors.initials: K
authors.lastname: Pike
authors.affiliation: Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York.
authors.forename: Evelyn
authors.initials: E
authors.lastname: Attia
authors.affiliation: Neuropsychiatric Research Institute, Fargo, North Dakota.|University of North Dakota School of Medicine and Health Sciences, Fargo, North Dakota.
authors.forename: Ross D
authors.initials: RD
authors.lastname: Crosby
authors.affiliation: Leicestershire Adult Eating Disorders Service, Leicestershire Partnership NHS Trust, Bennion Centre, Glenfield Hospital, United Kingdom.
authors.forename: Jackie
authors.initials: J
authors.lastname: Wales
authors.affiliation: Centre for Health Research, School of Medicine, Western Sydney University, Campbelltown, Australia.
authors.forename: Phillipa
authors.initials: P
authors.lastname: Hay
mesh_terms: D000328:Adult; D000856:Anorexia Nervosa / Q000628:therapy*; D015444:Exercise / Q000523:psychology*; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D057566:Self Report; D011795:Surveys and Questionnaires
keywords: anorexia nervosa; compulsive exercise; interview; self-report measures; validity