The increase in the incidence of cardiovascular diseases worldwide raises concerns about
the urgent need to increase definite measures for the self-determination of different …

Over the last decades, assessment of heart rate variability (HRV) has increased in various
fields of research. HRV describes changes in heartbeat intervals, which are caused by …

Heart rate variability (HRV) is a noninvasive, practical and reproducible measure of
autonomic nervous system function. Although the heart is reasonably stable, the time …

The heart rate variability (HRV), which can provide information about the balance between
the sympathetic and the parasympathetic system, is accepted as an indicator of autonomic …

The measurement and analysis of heart rate variability (HRV), which is based on the
variation between consecutive NN intervals, has become an established procedure over the …

Heart rate variability (HRV) refers to beat-to-beat interval changes on the electrocardiogram
(ECG) and is considered a noninvasive measure of the autonomic balance. Although …

Heart rate variability (HRV) refers to the beat-to-beat variation of the cardiac cycle. Since
heart rate is modulated on a beat-to-beat basis by the combined influence of the sympathetic …

Following the publication of the Task Force document on heart rate variability (HRV) in 1996,
a number of articles have been published to describe new HRV methodologies and their …

Heart rate variability (HRV) non-invasively assesses the activity of the autonomic nervous
system. During the past 30years, an increasing number of studies have related the …

Background The heart is the central organ of the circulatory system, which maintains the flow
of blood along with the transport of nutrients to different cells and tissues. A well-functioning …