Heart rate zones are how we categorize this effect. Zone 2 training is the basis for everyone's fitness. By using Zone 2 ...

However, C group is characterised by the maintenance of pRR50, no change in PGA and a second peak in FFT in the high-frequency zone. Conclusion: The HRV at rest and during aerobic exercise follows a ...

It measures your aerobic fitness levels ... be called “ submaximal ” because they are performed below maximum heart rate and exhaustion level, usually around or below 85% max heart rate.