Mohd Nawawi, Muhammad Muizz and Sidek, Khairul Azami and Azman, Amelia Wong and Mohd Nasir, Nashrul Fazli
(2021)
Reliability of electrocardiogram signals during feature extraction stage for smart textile shirts.
In: International Conference on Biomedical Engineering (ICoBE 2021), 14-15 September 2021, Virtual.
Abstract
Wearable smart textiles have garnered significant interest due to their high flexibility,
reusability, convenience and ability to work on home-based, real-life and real-time monitoring.
Wearable smart textiles are shirts with inbuilt textile sensors that enable electrocardiogram
(ECG) data to be collected more comfortably and smoothly outside the laboratory and clinical
environment for a continuous and longer duration for ECG data collection. However, the existing
ECG wearable smart textile main challenge is maintaining the quality and reliability of data
across multiple wearable smart textile shirts. Therefore, this research analyses the capability of
ECG morphology during Feature Extraction stages for different wearable smart textile shirts.
This paper reports the experiment conducted on eleven healthy volunteers, either wearing the
Hexoskin smart shirt or the HeartIn Fit shirt or both. ECG data were recorded while they are
doing normal daily routine activities for at least 45 minutes. The study demonstrates a significant
possibility of reliability in Feature Extraction stages at different time instances among subject
and wearable smart textiles shirts. With R peaks average between 0.543 to 1.194 mV and R-R
interval average between 0.625 to 0.799 seconds, the study concludes that both wearable smart
textiles do not significantly differ in Feature Extraction stages. Thus, both wearable smart textiles
gave a significant result, although both are affected by their wearer's motion artefacts during the
shifting of body postures and the wearer's body physical states. Furthermore, the ECG
morphology in this study has yielded a promising result in real life and as on-the-go ECG smart
textile biometric readiness for future explorations.
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