Heart rate variability (HRV) is a measurement of the fluctuation of time between each
heartbeat and reflects the function of the autonomic nervous system. HRV is an important …

Wearables are a ubiquitous trend in both commercial and academic settings as they easily
enable tracking and monitoring of physiological parameters such as heart rate (HR) and …

Background: A growing number of wearable devices claim to provide accurate, cheap and
easily applicable heart rate variability (HRV) indices. This is mainly accomplished by using …

Background The cardiac parameters, such as heart rate (HR) and heart rate variability
(HRV), are very important physiological data for daily healthcare. Recently, the camera …

Background Smartphone apps for heart rate variability (HRV) measurement have been
extensively developed in the last decade. However, ultra–short-term HRV recordings taken …

Stress is one of the most significant health problems in today's world. Existing work has used
heart rate variability (HRV) to detect stress and provide biofeedback in order to regulate it …

Heart rate variability (HRV) is the rate of variability between each heartbeat with respect to
time. It is used to analyse the Autonomic Nervous System (ANS), a control system used to …

Heart rate at rest and exercise may predict cardiovascular risk. Heart rate variability is a
measure of variation in time between each heartbeat, representing the balance between the …

Heart rate variability (HRV) is a reliable indicator of health status and a sensitive index of
autonomic stress reactivity. Stress negatively affects physical and psychological wellness by …

Heart rate variability (HRV) measurements provide information on the autonomic nervous
system and the balance between parasympathetic and sympathetic activity. A high HRV can …