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  • How to measure HRV

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    • Hi Edward, The Frontier X uses the Root Mean Square of Successive Differences between RR intervals to measure your HRV. When measured continuously, most individuals have HRV values between 0 – 100, where higher values are better. It is normal for HRV to vary during the day depending on the time of measurement. When continuously monitoring HRV, it…Read More

      • You correctly note that higher HRV values are generally better, but don’t explain this interpretation in terms of sympathetic tone and actual heart rate. You passively note that HRV is typically lower during exercise, obviously because the heart rate is increased and is likely at a relatively fixed level with sustained effort. It seems to me that…Read More

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