Visual Directed Deep Breathing with Heart Rate Variability Measurement in Mobile Application

Poh Foong LeeMing Chien OngWei Liang SoonChean Swee LingPaul E. Croarkin2024-10-232024-10-2320229783030907235978303090724210.1007/978-3-030-90724-2_52https://dspace-cris.utar.edu.my/handle/123456789/4310Visual Directed Deep Breathing with Heart Rate Variability Measurement in Mobile Applicationbook-chapter