Heart rate variability (HRV) typically increases with parasympathetic activation (rest-and-digest response) and decreases with sympathetic activation (fight-or-flight response). The autonomic nervous ...

You might be familiar with HRV—heart rate variability—as a popular training tool for workouts and a biomarker for measuring exercise recovery. Beyond exercise tracking, heart rate variability has a ...

Toronto, ON - A controlled study of healthy volunteers exposed to particulate air pollution provides insight into how air pollution contributes to arrhythmogenesis [1]. Previous studies have shown ...

New research helps explain why a subset of patients with relapsing/remitting multiple sclerosis (MS) experience long-term heart rate slowing after taking fingolimod. Patients with preexisting ...

The sinoatrial (SA) node is the natural pacemaker of the heart. It generates electrical impulses that cause the heart’s chambers to contract, setting the heart rate. The SA node typically generates 60 ...