HRV-parameter | Description | Activity as part of the autonomic nervous system | Reaction with increased stress |
---|---|---|---|
Overview stress parameter | |||
Stress index | The square root (to make the index normally distributed) of the Baevsky’s stress index | SNS | ↑ |
PNS index | Parasympathetic nervous system activity compared to normal resting values (PNS tone described by Mean RR, RMSSD and SD1(%) | PNS | ↓ |
SNS index | Sympathetic nervous system activity compared to normal resting values (SNS tone described by Mean HR, Stress Index and SD2(%)) | SNS | ↑ |