About heart rate variability
HRV describes the variations between consecutive inter-beat-intervals or IBIs. Both sympathetic and parasympathetic branches of the autonomic nervous system (ANS) are involved in the regulation of heart rate (HR). Sympathetic nervous system (SNS) activity… Read more
HRV time series
For HRV analysis, inter-beat interval (IBI) data is required. Such data can be extracted from electrocardiogram (ECG) recording as time intervals between successive ECG R-waves, i.e. RR time intervals. Similarly IBI data can be extracted from photoplethysmography (PPG)… Read more
HRV preprocessing
Careful preprocessing of HRV data is very important before applying any HRV analysis methods. Any artefact in the RR interval time series may significantly interfere the analysis of these signals. The artefacts within HRV signals can be divided into… Read more
HRV analysis methods
In this section, the analysis methods available in Kubios HRV software are introduced. The presented methods are divided into four categories: 1) time-domain, 2) frequency-domain, 3) nonlinear, and 4) time-varying HRV analysis methods… Read more
HRV in assessing ANS function
HRV reflects variations between consecutive inter-beat-intervals. Both sympathetic and parasympathetic branches of the autonomic nervous system (ANS) are involved in the regulation of heart rate. Parasympathetic nervous system (PNS) activity is known to… Read more
Sport and Exercise Analysis
Sport and exercise analysis features providing detailed performance analytics and heart rate recovery for different types of training and exercise sessions are described here. These features are available in selected Kubios HRV software products… Read more
Publications
See publications that describe certain functionalities of Kubios HRV software products or provide validation results for our pre-processing and analysis algorithms. If you are using Kubios HRV software products in scientific research, please cite these publications… Read more