HRV is a methodology for assessing modifications within the cardiac cycle1. Simply put, HRV “refers to the time between heartbeats,” explains Bradley Serwer, MD, FACC, a board-certified interventional heart specialist and the Chief Medical Officer of CardioSolution. “While most people have a relatively regular heart rate, there is always some variability in the time between individual beats.”
As for the way your coronary heart charge variability works, the autonomic nervous system, or ANS, controls your coronary heart charge2 and, in the end, your HRV. The ANS includes the sympathetic (“fight or flight”) and parasympathetic (“rest and digest”) responses.
“When the autonomic nervous system is in balance, there tends to be a higher variability in time between heartbeats,” stated Serwer. “When the autonomic nervous system is out of balance either due to increased stress (physiologic or psychological), illness or autonomic dysfunction, the variability between heart rates decreases.”
Your HRV varies relying in your age and gender, so there’s no precise quantity to reference (it additionally fluctuates over time). Talk along with your physician to get a greater concept of the precise vary it is best to goal for based mostly in your well being.