title: Measuring energy expenditure after stroke: validation of a portable device.
abstract: OBJECTIVE
  Current means of assessing physical activity and energy expenditure have restrictions in stroke, limiting our understanding of its role in therapeutic management. This study validates a portable multisensor array for measuring free-living total energy expenditure compared with a gold standard method (doubly labeled water) in individuals with stroke.
  
  
  METHODS
  Daily energy expenditure was measured in 9 participants with stroke (73 ± 8 years) over a 10-day period with 2 techniques: a portable multisensor array and doubly labeled water.
  
  
  RESULTS
  Bland-Altman analysis revealed a mean difference of 94 kcal/day (3.8%) in total energy expenditure measures given by the multisensor array in comparison to doubly labeled water with lower and upper limits of agreement of -276 to 463.8 kcal/day (2473 ± 468 versus 2380 ± 551, P=0.167). There was strong agreement between the multisensor array and labeled water methods of capturing total daily energy expenditure (r=0.850, P=0.004).
  
  
  CONCLUSIONS
  The multisensor array is a portable and accurate method of capturing daily energy expenditure and may assist in understanding how stroke influences free-living energy expenditure and aid in clinical management.
authors.affiliation: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
authors.forename: Sarah A
authors.initials: SA
authors.lastname: Moore
authors.forename: Kate
authors.initials: K
authors.lastname: Hallsworth
authors.forename: Les J C
authors.initials: LJ
authors.lastname: Bluck
authors.forename: Gary A
authors.initials: GA
authors.lastname: Ford
authors.forename: Lynn
authors.initials: L
authors.lastname: Rochester
authors.forename: Michael I
authors.initials: MI
authors.lastname: Trenell
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004734:Energy Metabolism; D005260:Female; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods*; D020521:Stroke / Q000378:metabolism*; D000071939:Stroke Rehabilitation; D013995:Time; D013997:Time Factors