Analyze: HRV (Heart Rate Variability)
Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the beat-to-beat interval, also called the R-R interval.
The Fitrockr Heart Rate Variability (HRV) Report automatically derives key HRV indices from BBI data recorded by a wearable.
The HRV report can be viewed in the Fitrockr Research & Control Center or downloaded and imported into third party tools.
The HRV Report will provide the following key indices:
– Min BBI: lowest BBI.
– Avg BBI: average BBI.
– Max BBI: highest BBI.
– SDNN: standard deviation of the IBI of normal sinus beats (SDNN)
– RMSSD: root mean square of successive RR interval differences.
– PNN50: percentage of successive RR intervals that differ by more than 50 ms.
– SD1/SD2: ratio of SD1 to SD2.
– VLF: power in the very low-frequency range (0.0033 – 0.04 Hz).
– LF: power in the low-frequency range (0.04 – 0.15 Hz).
– HF: power in the low-frequency range (0.15 – 0.4 Hz).
– LF/HF: ratio of LF to HF power.
– TP: total power.
Garmin Connect users: please note that Garmin Connect users will be excluded from report results. Reason is that Garmin Connect dies not provide raw BBI data.