Metrics of heart period variability are widely used in the behavioral and biomedical sciences,
although somewhat confusingly labeled as heart rate variability (HRV). Despite their wide …

Heart rate variability (HRV) is significantly associated with average heart rate (HR),
therefore, HRV actually provides information on two quantities, that is, on HR and its …

Heart rate variability (HRV), the beat-to-beat variation in either heart rate or the duration of
the RR interval, has become a popular clinical and investigational tool (Task Force of the …

Heart rate variability (HRV), the beat-to-beat variation in either heart rate (HR) or heart
period (RR interval), has become a popular clinical and investigational tool to quantify …

Objectives Clinical and experimental research studies have demonstrated that the emotional
experience of anxiety impairs heart rate variability (HRV) in humans. The present study …

Background: Heart rate variability (HRV) is a noninvasive method that reflects the regulation
of the autonomic nervous system. Altered HRV is associated with adverse mental or physical …

The biological mechanisms underlying the associations between atmospheric ozone
exposure and adverse cardiometabolic outcomes are yet to be identified. Imbalanced …

Purpose This study investigated whether short-term heart rate variability (HRV) can be used
to differentiate between the immediate recovery periods following three different intensities …

Background: Since heart rate variability (HRV) is associated with average heart rate (HR)
and respiratory rate (RespRate), alterations in these parameters may impose changes in …

Background: Heart rate variability (HRV) analysis is a clinical tool frequently used to
characterize cardiac autonomic status. The aim of this study was to establish normative …