Alta HR resting heart rate inaccurate? Device may be broken?

[JessieJiang27]

Hi my resting heart rate has been the same for the past 5 or 6 Days. I run on a hiit schedule and there’s no way my resting heart rate is obove 60 when I do intensive running, or it’s never been so consistent for more than 3 Days. Even if I don’t run or run less. The data will go up or down a little bit each day.

Also when I’m relaxed the heart rate drop to 56-58 but the app still says it’s 65 resting heart rate. 

Does that mean there’s something wrong with the device? 

I’ve tried:

Restarted

deleted app reinstalled 

deleted the device reconnected

[Esya · Accepted solution]

There does not seem to be anything wrong. Resting heart rate is not the lowest heart rate you reach during a day. It is more like an average over the night time. Mine can be the same for days in a row while the background data is different. For me it is always higher than the lowest heart rate I had during the night and lower than the peaks during the night. The algorithm used to determine RHR does not seem to be very elegant though. I feel it is just an average instead of a weighted average (taking into account the amount of time spent with a certain heart rate), but I am not sure about this observation.

[WavyDavey]

I believe @Esya is correct. Fitbit has their own way of calculating resting heart rate, which can be different than other methods. The actual number isn't as important as following the trend to catch a fast-rising rate.

[JessieJiang27]

Hi thanks for your reply. I think I didn’t make it clear. Is that possible that I’m on a high intensive running but resting rate doesn’t change a bit for 5 or 6 even 7 Days? Because it never happened to me before. 

[JessieJiang27]

Hi thanks for your reply. I think I didn’t make it clear. Is that possible that I’m on a high intensive running but resting rate doesn’t change a bit for 5 or 6 even 7 Days? Because it never happened to me before.

[WavyDavey]

When I do intense exercise like HIIT, it often doesn't have much effect on the resting heart rate at first. Over time, as my fitness improved, the resting heart rate settled at a lower rate.

In general, my resting heart rate has it's own cycles. Sometimes HIIT has an effect on it, sometimes not as much.

Sorry, if I'm mistaking your question. But basically, it looks normal to me.

[Esya]

There are a lot of factors at play for your RHR, way more than just your fitness level. Changes in temperature of the bedroom can have an impact as well as alcohol consumption. And there are stress levels ofcourse and getting/being sick (as simple as a minor cold). So yes, it is very possible for you to see something else than you were expecting based solely on your fitness level.