What is heart rate variability (HRV) and how is it calculated? | Peter Attia and Joel Jamieson

Partially SupportedRMSSD, a heart rate variability metric, represents the input of the vagus nerve into the sinoatrial node of the heart.

Partially SupportedCalculating heart rate variability (HRV) involves filtering EKG data to remove ectopic beats and noise, resulting in clean RR intervals.

Partially SupportedTime domain calculations for HRV, such as RMSSD, SNN, and PNN50, provide a number representing average variability.

Partially SupportedThe parasympathetic system, via the vagus nerve, innervates the sinoatrial node and pulses in rhythm with respiratory processes, influencing heart rate.

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