title: Is the SenseWear Armband accurate enough to quantify and estimate energy expenditure in healthy adults?
abstract: BACKGROUND
  The SenseWear Armband (SWA) is a monitor that can be used to estimate energy expenditure (EE); however, it has not been validated in healthy adults. The objective of this paper was to study the validity of the SWA for quantifying EE levels.
  
  
  METHODS
  Twenty-three healthy adults (age 40-55 years, mean: 48±3.42 years) performed different types of standardized physical activity (PA) for 10 minutes (rest, walking at 3 and 5 km·h-1, running at 7 and 9 km·h-1, and sitting/standing at a rate of 30 cycle·min-1). Participants wore the SWA on their right arm, and their EE was measured by indirect calorimetry (IC) the gold standard.
  
  
  RESULTS
  There were significant differences between the SWA and IC, except in the group that ran at 9 km·h-1(>9 METs). Bland-Altman analysis showed a BIAS of 1.56 METs (±1.83 METs) and limits of agreement (LOA) at 95% of -2.03 to 5.16 METs. There were indications of heteroscedasticity (R2=0.03; P<0.05). Analysis of the receiver operating characteristic (ROC) curves showed that the SWA seems to be not sensitive enough to estimate the level of EE at highest intensities.
  
  
  CONCLUSIONS
  The SWA is not as precise in estimating EE as IC, but it could be a useful tool to determine levels of EE at low intensities.
authors.affiliation: Department of Health Sciences, GIDFYS, European University Miguel de Cervantes, Valladolid, Spain;; Research Institute of Hospital 12 de Octubre ("i+12"), Madrid, Spain.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Santos-Lozano
authors.affiliation: Faculty of Health and Sport Science (FCSD), Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain.
authors.forename: Adrián
authors.initials: A
authors.lastname: Hernández-Vicente
authors.affiliation: Department of Biomedical Sciences, University of León, León, Spain.
authors.forename: Raúl
authors.initials: R
authors.lastname: Pérez-Isaac
authors.affiliation: Department of Biomedical Sciences, University of León, León, Spain.
authors.forename: Fernanda
authors.initials: F
authors.lastname: Santín-Medeiros
authors.affiliation: IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
authors.forename: Carlos
authors.initials: C
authors.lastname: Cristi-Montero
authors.affiliation: Faculty of Health and Sport Science (FCSD), Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain;; GENUD research group, University of Zaragoza, Zaragoza, Spain;; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERObn), Spain;; Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA, Zaragoza, Spain.
authors.forename: Jose Antonio
authors.initials: JA
authors.lastname: Casajús
authors.affiliation: Research Institute of Hospital 12 de Octubre ("i+12"), Madrid, Spain;; Faculty of Health and Sport Science (FCSD), Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain;; GENUD research group, University of Zaragoza, Zaragoza, Spain;; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERObn), Spain;; Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA, Zaragoza, Spain.
authors.forename: Nuria
authors.initials: N
authors.lastname: Garatachea
keywords: Energy expenditure (EE); accelerometry; indirect calorimetry (IC); metabolic equivalent; validation studies