[jamestnz]

HRV describes the steadiness (or not) of the timing between beats, as measured in milliseconds. It sounds like you are describing something else here, like your resting rate and how much/quickly it responds to exercise.

For an example of HRV, let's say you're showing a heart rate of exactly 95 BPM for a one minute period, which means an average of one beat every 0.6316 second. If the actual beats were very close to occurring exactly once every 0.6316 sec like clockwork, then you have a low HRV.

At some later time, you also measure 95 BPM during a one minute period, but this time you find the period between beats is much more variable. Sometimes it is 0.627 seconds, and sometimes it is 0.641 seconds. The beats aren't falling like clockwork, they are all over the place.

The second example is a high HRV, both examples having the same heart rate.

Accurate beat-measuring equipment is required to calculate HRV (e.g. a heart-rate watch and an app).

[1_player]

Ah good, thanks for the clarification.