CHARGE 5 DATA VARIABLES

[Jisoo]

Hello, we are having research in Korea through FITBIT data. 

After downloading the FITBIT charge 5 watch data, I checked the API web, but I couldn't find the explanation of some variables.

1. Where can I find the explanation for the 13 variables below?

1)OutOfRangeHeartRateMinutesact/ 2)FatBurnHeartRateMinutesact/ 3)CardioHeartRateMinutesact/ 4)PeakHeartRateMinutesact/ 5)OutOfRangeHeartRateMinutesheart/ 6)FatBurnHeartRateMinutesheart/ 7)CardioHeartRateMinutesheart/ 8)PeakHeartRateMinutesheart/ 9)sync/ 10)first_inbed/ 11)outbed/ 12)first_sleep/ 13)wakeup

2. Is there any difference between the following variables(Rmssd vs deepRmssd)? Where can I find a detailed explanation?

Thank you for your help 🙂

[LZeeW]

Hello @Jisoo and welcome to the Community.  I moved your post to the Web API forum.  I hope that one of the developers can help you.

[GordonFitbit]

Hi @Jisoo 

Let's see if I can answer those questions for you.

1. Where did you get these names?  They don't match up to the elements we return through the API.   Some of them I can relate these items to what we do return.

• 1-4 are the heart rate zones returned by the activity endpoints.  See https://dev.fitbit.com/build/reference/web-api/activity/
• 5-8 are the heart rate zones returned by the heart rate endpoints. See https://dev.fitbit.com/build/reference/web-api/heartrate-timeseries/
• 9 could be the last sync time of the device.   See https://dev.fitbit.com/build/reference/web-api/devices/get-devices/
• 10-13 would likely come from our sleep endpoint.  See https://dev.fitbit.com/build/reference/web-api/sleep/get-sleep-log-by-date/.  However, I don't understand the names and how they relate to our API.

2. We return 3 rmssd values

• Get HRV Summary returns
  • dailyRmssd - the short-term variability in the user's the user's daily heart rate
  • deepRmssd - the short-term variablility in the user's heart rate while in deep sleep
• Get HRV Intraday returns
  • rmssd - the short-term variability in the user's heart rate at a specific time

Hope this helps