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Heart Rate Variability Logger - Quick Start Guide
The heart rate variability logger v4.2 is a tool for extracting, plotting, and exporting heart rate and variability features, while providing options for event annotation and context tracking via motion intensity and location. It allows configurable time windows for feature computation, correction for artifacts, and data export through iTunes or Dropbox. The application supports comparisons between recordings for enhanced understanding of autonomic regulation and provides real-time views of heart rate and data analytics.
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Heart Rate Variability Logger - Quick Start Guide
- 1. Heart Rate VariabilityLogger V4.2 Quick Start Guide @marco_alt
- 2. • Extracts, plots,stores and exports heart rate, rr-intervals, time and frequency domain heart rate variability features (AVNN, SDNN, rMSSD, pNN50, LF, HF, LF/HF) • Configurable experience sampling for events annotation • Comparison between recordings lets you get a better understanding of autonomic regulation and sympathetic/parasympathetic activity under different contexts in a glance • Step counter or accelerometer derived motion intensity for user context (step counter only for iPhones 5S) • Configurable time window for features computation (choose between 30 seconds, 1, 2 or 5 minutes) • Location tracking (GSM/WiFI or GPS based) • RR-intervals correction can be enabled to prevent ectopic beats or artifacts from affecting HRV features • Data export using iTunes or Dropbox • Tested for recordings longer than 24 hours
- 3. Select RR-interval correction parameters toremove artifacts due to motion or ectopic beats Configure your preferred time window, features will be computed accordingly Link to Dropbox or use iTunes to download your data
- 4. By enabling experience sampling, eventswill be automatically triggered at configurable time intervals You can also add some randomness to avoid receiving events at constant time intervals, in this case enable 'add randomness' as well. There will be a shift in time of maximum 5% more or 5% less than the time specified as 'time interval’
- 5. Activity tracking can beused to add context to your recordings (motion intensity for iphons prior to the 5S, and step counter for the 5S) Additional context can be acquired enabling location tracking. GSM and WiFi networks will be used if high accuracy location is disabled, otherwise the app will use GPS and therefore drain more battery power, but provide more accurate and frequent location updates.
- 6. connect Connect to your BluetoothSMART Heart Rate Monitor
- 7. record HRV Logger will startreceiving your Heart Rate Next, start a recording heart rate
- 8. stop log event During the recording,you can log relevant events
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- 10. The real-time view showsthe HR and RR data received from the sensor, as well as the computed features
- 11. RR-intervals can be corrected automaticallyfor artifacts and ectopic beats
- 12. Features are computed atuserdefined windows (30 seconds to 5 minutes) HRV Features: - AVNN - SDNN - rMSSD - pNN50 - LF - HF - LF/HF Accelerometer Features: - Motion intensity
- 13. On top ofHRV features, the accelerometer is used to determine motion intensity and give an indication of the user activity Iphones 5S will display actual steps taken
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- 15. Browse your history ofrecordings
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- 18. Filter data basedon configurable thresholds
- 19. Recordings comparisons Select up tothree recordings to compare get a better understanding of autonomic regulation and sympathetic/parasy mpathetic activity under different contexts in a glance
- 21. Data format • Fourcsv files • HR every second as received from the sensor • RR-intervals after correction • Events annotated + event type and text • Features (AVNN, SDNN, rMSSD, pNN50, LF, HF, LF/HF, steps, latitude, longitude) Features example:
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