Brazilian researchers reveal that even mild cases of COVID-19 can temporarily reduce heart rate variability, with stress on the autonomic nervous system lasting up to six months—especially in older ...

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

Slower heart rate recovery before PCI independently predicts periprocedural myocardial infarction and may improve cardiac risk assessment.

Objective 1) Measure 24-hour heart rate variability (HRV) following sport-related concussion (SRC) and compare perturbations to athletes with musculoskeletal (MSK) injuries and healthy (CTL) athletes.

FRIDAY, Oct. 10, 2025 (HealthDay News) -- Heart rate variability biofeedback (HRVB) can reduce negative affect, craving, and substance use among individuals in early recovery from substance use ...