title: Validation of a multi-sensor armband during free-living activity in adults with cystic fibrosis.
abstract: BACKGROUND
  The SenseWear Armband (SWA) provides simple and non-invasive measures of energy expenditure (EE) during physical activity, however its accuracy in adults with cystic fibrosis (CF) during free living physical activities has not been established.
  
  
  METHODS
  26 CF adults (mean FEV1 63% predicted; 11 males) completed a series of standardised static and active tasks with simultaneous analysis of EE via the SWA and indirect calorimetry (IC).
  
  
  RESULTS
  Mean difference and limits of agreement between EE values from the SWA and IC across all activities were -0.02METs (95% CI -1.1 to 1.1). There was moderate agreement between the two measures (ICC 0.4; 95% CI: 0 to 0.7; p=0.03). For individual activity tasks ICC ranged from 0.1 to 0.6.
  
  
  CONCLUSIONS
  Overall, the SWA demonstrated good agreement with IC for EE estimates in CF adults during a series of free-living activities, however accuracy was variable when assessing EE for specific activities of shorter duration.
authors.affiliation: School of Physiotherapy, Faculty of Health Sciences, La Trobe University, Australia. Electronic address: nscox@students.latrobe.edu.au.
authors.forename: Narelle S
authors.initials: NS
authors.lastname: Cox
authors.affiliation: Discipline of Physiotherapy, Faculty of Health Sciences, University of Sydney, Australia; Department of Physiotherapy, Royal Prince Alfred Hospital, Australia.
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Alison
authors.affiliation: Department of Physiotherapy, Alfred Hospital, Australia; Department of Medicine, Alfred Campus, Monash University, Australia; Department of AIRmed, Alfred Hospital, Australia.
authors.forename: Brenda M
authors.initials: BM
authors.lastname: Button
authors.affiliation: Department of Medicine, Alfred Campus, Monash University, Australia; Department of AIRmed, Alfred Hospital, Australia.
authors.forename: John W
authors.initials: JW
authors.lastname: Wilson
authors.affiliation: Department of Respiratory Medicine, Monash Health, Australia; Department of Medicine, Monash Campus, Monash University, Australia.
authors.forename: Judith M
authors.initials: JM
authors.lastname: Morton
authors.affiliation: School of Physiotherapy, Faculty of Health Sciences, La Trobe University, Australia.
authors.forename: Leona M
authors.initials: LM
authors.lastname: Dowman
authors.affiliation: School of Physiotherapy, Faculty of Health Sciences, La Trobe University, Australia; Department of Physiotherapy, Alfred Hospital, Australia.
authors.forename: Anne E
authors.initials: AE
authors.lastname: Holland
mesh_terms: D061725:Accelerometry / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D000328:Adult; D001132:Arm; D003550:Cystic Fibrosis / Q000378:metabolism* / Q000503:physiopathology*; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D009043:Motor Activity / Q000502:physiology; D015203:Reproducibility of Results; D055815:Young Adult
keywords: Accelerometer; Activity monitor; Energy expenditure; Free-living; Physical activity