Now showing items 1-6 of 6

    • A methodology to quantify the differences between alternative methods of heart rate variability measurement 

      García González, Miguel Ángel; Fernández Chimeno, Mireya; Guede Fernández, Federico; Ferrer Mileo, Víctor; Argelagós Palou, Ariadna; Álvarez Gómez, Laura; Parrado Romero, Eva; Moreno Sánchez, Jordi; Capdevila, Lluis; Ramos Castro, Juan José (Institute of Physics (IOP), 2015-12-14)
      Article
      Open Access
      This work proposes a systematic procedure to report the differences between heart rate variability time series obtained from alternative measurements reporting the spread and mean of the differences as well as the agreement ...
    • Comparison of omega wave system and polar S810i to detect R-R intervals at rest 

      Parrado Romero, Eva; García González, Miguel Ángel; Ramos Castro, Juan José; Cervantes Blasquez, Julio Cesar; Rodas Font, Gil; Capdevila Ortis, Lluís (2010)
      Article
      Restricted access - publisher's policy
      The present study was performed to compare R-R interval data and heart rate variability indices obtained from the Polar S810i and the Omega Wave Sport System for a total of 96 adults in a supine position. Data were ...
    • Facial video-based photoplethysmography to detect HRV at rest 

      Moreno Sánchez, Jordi; Ramos Castro, Juan José; Movellan, J; Parrado Romero, Eva; Rodas Font, Gil; Capdevila Ortis, Lluís (2015-06-01)
      Article
      Restricted access - publisher's policy
      Our aim is to demonstrate the usefulness of photoplethysmography (PPG) for analyzing heart rate variability (HRV) using a standard 5-min test at rest with paced breathing, comparing the results with real RR intervals and ...
    • HRV based Health&Sport markers using video from the face 

      Capdevila, Ll.; Moreno, Jordi; Movellan, Javier; Parrado Romero, Eva; Ramos Castro, Juan José (IEEE, 2012)
      Conference report
      Restricted access - publisher's policy
      Heart Rate Variability (HRV) is an indicator of health status in the general population and of adaptatio n to stress in athletes. In this paper we compare the performance of two systems to measure HRV: (1) A commerc ...
    • New indices for quantification of the power spectrum of heart rate variability time series without the need of any frequency band definition 

      Ramos Castro, Juan José; Padullés, M.; Marina, M.; Bescós, R.; Iglesias, X.; Rodriguez, F. A.; García González, Miguel Ángel; Fernández Chimeno, Mireya; Ferrer, J.; Escorihuela, R.M.; Parrado Romero, Eva; Capdevila, L.; Benitez, A.; Angulo, R. (IOP PUBLISHING LTD, 2011-06-07)
      Article
      Restricted access - publisher's policy
      This paper presents a new family of indices for the frequency domain analysis of heart rate variability time series that do not need any frequency band definition. After proper detrending of the time series, a cumulated ...
    • Resonance frequency is not always stable over time and could be related to the inter-beat interval 

      Capdevila Ortis, Lluís; Parrado Romero, Eva; Ramos Castro, Juan José; Zapata Lamana, Rafael; Lalanza, Jaume F. (Nature, 2021-04-16)
      Article
      Open Access
      Heart Rate Variability Biofeedback (HRVB) is based on breathing at an optimal rate (or resonance frequency, RF) corresponding to the respiratory sinus arrhythmia (RSA). Our aim is to check whether the RF is a stable factor ...