https://github.com/vtrifonov-esfiddle/TestHrv

Heart rate variability app for Garmin smartwatches
https://github.com/vtrifonov-esfiddle/TestHrv

connect-iq connectiq garmin heart-rate heart-rate-monitor heart-rate-variability hrv monkey-c test-hrv

Last synced: 3 months ago
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Heart rate variability app for Garmin smartwatches

• Host: GitHub
• URL: https://github.com/vtrifonov-esfiddle/TestHrv
• Owner: vtrifonov-esfiddle
• License: mit
• Created: 2018-11-10T17:02:21.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2021-01-13T23:15:02.000Z (over 4 years ago)
• Last Synced: 2023-03-06T05:05:43.081Z (about 2 years ago)
• Topics: connect-iq, connectiq, garmin, heart-rate, heart-rate-monitor, heart-rate-variability, hrv, monkey-c, test-hrv
• Homepage:
• Size: 842 KB
• Stars: 44
• Watchers: 9
• Forks: 4
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-garmin - TestHrv
• awesome-garmin - TestHrv - Heart rate variability app for Garmin smartwatches (2021-01-13) (Device Apps / Older resources)

README

        
# Test HRV

A Garmin app that measures [HRV](https://en.wikipedia.org/wiki/Heart_rate_variability)(Heart Rate Variability) in a 3 minute test. Saves the output as a Connect IQ activity.

![TestHrvDemo](TestHrvDemo.gif)

## [Download](https://apps.garmin.com/en-US/apps/0bdc0e75-9baa-417a-8c9f-e976662a5d2e)

Link to the Garmin Connect IQ app store.

## Measurements

- [HRV](https://en.wikipedia.org/wiki/Heart_rate_variability) (Heart Rate Variability)

    - RMSSD - Root Mean Square of Successive Differences (beat-to-beat intervals)

    - pNN20 - % of successive beat-to-beat intervals that differ by more than 20 ms

    - pNN50 - % of successive beat-to-beat intervals that differ by more than 50 ms

    - beat-to-beat interval - reading coming directly from the watch sensor

    - HRV Successive Differences - difference between current and previous beat-to-beat intervals

    - SDRR - [Standard Deviation](https://en.wikipedia.org/wiki/Standard_deviation) of beat-to-beat intervals      

    - HRV RMSSD 30 Sec Window - RMSSD calculated for consecutive 30 second intervals    

    - HR from heartbeat - beat-to-beat interval converted to HR

- HR (Heart Rate)

  - minimum

  - average

  - maximum

## Viewing Results in Garmin Connect

Results are saved as a Garmin Connect activity category **Other** named **Test HRV**: ![TestHrvActivity](./Screenshots/TestHrvOverviewActivity.png)

The summary data is saved under Stats, section Connect IQ:

![SummaryStats](./Screenshots/SummaryStats.png) 

The extra graphs are shown next to the built-in Garmin graphs:

![Graphs](./Screenshots/Graphs.png)

## Requirements

- Connect IQ 3+ compatible device that tracks Heart Beat Interval data

- Measurements taken from the built-in optical HR sensor on the watch

  - For reliable readings minimise wrist movement

  - No strap required

- HR straps not supported

- The app starts measurements automatically as soon as stable sensor readings are detected 

## Dependencies

- Status Icons - [Font Awesome free](https://fontawesome.com/license) (SIL OFL 1.1 License)