Imperial College London
Alternate

ProfessorAlunHughes

Faculty of Medicine, National Heart & Lung Institute

Visiting Professor
 
 
 
//

Contact

 

a.hughes Website

 
 
//

Assistant

 

Mrs Kim Cyrus +44 (0)20 7594 6047

 
//

Location

 

59/61 North Wharf RoadSt Mary's Campus

//

Summary

 

Publications

Citation

BibTex format

@inproceedings{Orini:2022:10.22489/CinC.2022.237,
author = {Orini, M and Guvensen, G and Jamieson, A and Chaturvedi, N and Hughes, AD},
doi = {10.22489/CinC.2022.237},
title = {Movement, Sweating, and Contact Pressure as Sources of Heart Rate Inaccuracy in Wearable Devices},
url = {http://dx.doi.org/10.22489/CinC.2022.237},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Wearable devices enable continuous heart rate (HR) monitoring through photoplethysmography (PPG). The impact of wrist-worn devices' sensor contact pressure and sweat, and of their interaction with movement, on HR monitoring is unclear. HR was recorded in 17 healthy individuals using two smartwatches, Garmin Vivoactive 4 (GV) and Fitbit Sense (FS), concurrently with ECG at rest and during controlled arm movement at three increasing intensities. Recordings were repeated after reducing contact pressure by loosening the wristband by one or two notches and using one or two drops of saline solution to simulate sweating. In optimal conditions, the mean absolute percentage error (MAPE) was (median [interquartile range]) 4.3% (1.4%, 7.7%) and 3.1% (1.6%, 5.0%) (p=0.58), for GV and FS, respectively. Loosening the wristband by 1 notch increased MAPE for FS during rest (p=0.021), moderate (p=0.004) and vigorous (p=0.002) movement, but not for GV, for which loosening the wristband by 2 notches increased MAPE during moderate (p=0. 015) and vigorous (p=0.008) movement. Simulated sweat increased MAPE during moderate movement using FS (p=0.002), and during vigorous movement for both devices. In conclusion, contact pressure and sweating can increase HR inaccuracy even during rest and moderate movement.
AU  - Orini,M
AU  - Guvensen,G
AU  - Jamieson,A
AU  - Chaturvedi,N
AU  - Hughes,AD
DO  - 10.22489/CinC.2022.237
PY  - 2022///
SN  - 2325-8861
TI  - Movement, Sweating, and Contact Pressure as Sources of Heart Rate Inaccuracy in Wearable Devices
UR  - http://dx.doi.org/10.22489/CinC.2022.237
ER  -
Download