title: Validation of the Hexoskin wearable vest during lying, sitting, standing, and walking activities.
abstract: We tested the validity of the Hexoskin wearable vest to monitor heart rate (HR), breathing rate (BR), tidal volume (VT), minute ventilation, and hip motion intensity (HMI) in comparison with laboratory standard devices during lying, sitting, standing, and walking. Twenty healthy young volunteers participated in this study. First, participants walked 6 min on a treadmill at speeds of 1, 3, and 4.5 km/h followed by increasing treadmill grades until 80% of their predicted maximal heart rate. Second, lying, sitting, and standing tasks were performed (5 min each) followed by 6 min of treadmill walking at 80% of their ventilatory threshold. Analysis of each individual's mean values under each resting or exercise condition by the 2 measurement systems revealed low coefficient of variation and high intraclass correlation values for HR, BR, and HMI. The Bland-Altman results from HR, BR, and HMI indicated no deviation of the mean value from zero and relatively small variability about the mean. VT and minute ventilation were provided in arbitrary units by the Hexoskin device; however, relative magnitude of change from Hexoskin closely tracked the laboratory standard method. Hexoskin presented low variability, good agreement, and consistency. The Hexoskin wearable vest was a valid and consistent tool to monitor activities typical of daily living such as different body positions (lying, sitting, and standing) and various walking speeds.
authors.affiliation: a CAPES Foundation, Ministry of Education, Brasilia, DF, Brazil.|b Faculty of Applied Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Villar
authors.affiliation: b Faculty of Applied Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada.|c CNPq Foundation, Ministry of Education, Brasilia, DF, Brazil.
authors.forename: Thomas
authors.initials: T
authors.lastname: Beltrame
authors.affiliation: b Faculty of Applied Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
authors.forename: Richard L
authors.initials: RL
authors.lastname: Hughson
mesh_terms: D061725:Accelerometry / Q000706:statistics & numerical data; D000328:Adult; D003020:Clothing; D004867:Equipment Design; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000706:statistics & numerical data; D011187:Posture / Q000502:physiology*; D012016:Reference Values; D015203:Reproducibility of Results; D056152:Respiratory Rate / Q000502:physiology*; D013990:Tidal Volume / Q000502:physiology; D016138:Walking / Q000502:physiology*
keywords: Bland–Altman plots; breathing rate; coefficient de variation; coefficient of variation; corrélation intra-classe; dispositif portable; fréquence cardiaque; fréquence respiratoire; graphique Bland–Altman; heart rate; hip-motion intensity; intensité du mouvement de la hanche; intraclass correlation; ventilation; wearable device