14 lines
No EOL
1.3 KiB
Text
14 lines
No EOL
1.3 KiB
Text
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.
|
|
|
|
The "Heart Rate Variability Details" files include 5 minutes granularity recordings of your HRV during a sleep. The description for the values of each row is as follows:
|
|
|
|
- timestamp: the start of the 5 minutes interval for which the following values were computed
|
|
- rmssd: "root mean square of successive differences" - the square root of the mean of the squares of the successive differences between adjacent beat-to-beat intervals
|
|
- coverage: the number of data points in the interval, multiplied by the mean beat-to-beat of the interval in seconds and divided by the number of seconds in the interval (300 seconds)
|
|
- low_frequency: measures long term variations in heart rate and reflects activity from both the sympathetic and parasympathetic branches
|
|
- high_frequency: measures short term variations in heart rate and captures parasympathetic activity
|
|
|
|
The "Heart Rate Variability Histogram" files include histograms that shows the spread in the beat-to-beat intervals for your sleeps:
|
|
|
|
- timestamp: the wake time
|
|
- bucket_values: 29 bins grouping and counting the similar beat-to-beat durations during your sleep. The bins interval is 0.05s, and the bins start at 0.3s. E.g. 0.3s, 0.35s, 0.4s, etc |