title: Measurement of daily activity in restrictive type anorexia nervosa.
abstract: OBJECTIVE
  The assessment of daily activity in patients with restrictive type anorexia nervosa is limited by an absence of accurate and precise technology. We wanted to test a daily activity detecting device named, the physical activity monitoring system (PAMS).
  
  
  METHODS
  Women participants with restrictive type anorexia nervosa (n = 8, 36 +/- 11 years, 17 +/- 2 kg/m(2)) and healthy women participants (n = 8, 30 +/- 11 years, 27 +/- 7 kg/m(2)) were asked to lie, sit, and stand motionless, and walk at 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 mph while wearing PAMS.
  
  
  RESULTS
  For all restrictive type anorexia nervosa and healthy participants, body posture was correctly detected for all measurements (300/300). There was excellent correlation of an individual's body acceleration with walking velocity and walking energy expenditure (r(2) > .99).
  
  
  CONCLUSIONS
  The PAMS technology could serve as a tool for lending insight into the pathophysiology of restrictive type anorexia nervosa; and potentially measuring compliance with activity recommendations for medical professionals treating individuals with restrictive type anorexia nervosa.
authors.affiliation: Endocrine Research Unit, Mayo Clinic, Rochester, Minnesota 55905, USA.
authors.forename: Ann M
authors.initials: AM
authors.lastname: Harris
authors.forename: Donald E
authors.initials: DE
authors.lastname: McAlpine
authors.forename: Rashmi
authors.initials: R
authors.lastname: Shirbhate
authors.forename: Chinmay U
authors.initials: CU
authors.lastname: Manohar
authors.forename: James A
authors.initials: JA
authors.lastname: Levine
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000856:Anorexia Nervosa / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology*; D015992:Body Mass Index; D004594:Electrophysiology / Q000295:instrumentation; D004734:Energy Metabolism; D004867:Equipment Design; D005260:Female; D006801:Humans; D009043:Motor Activity; D009748:Nutrition Disorders / Q000453:epidemiology; D009752:Nutritional Status; D011187:Posture; D012720:Severity of Illness Index; D016138:Walking