How accurate is HRV?

[SunsetRunner]

How accurate is the HRV in the health metrics?

Moderator edit: updated subject for clarity

[DimaF]

I think the HRV data provided by fitbit is useless. Not worth paying attention to it as it doesn't event get the trends right. Mine keeps jumping around

[Less13]

Mine was 0 for days before I realized it was not collected data.

[Miss_Moe]

We have similar stats. I am 44, work out 5 times a week and my RHR has been in the high 40s-low 50s for years. Fitbit says my HRV is 47 which from looking at charts also puts me in the senior category! Not sure how accurate this thing is at times, definitely think the caloric burn estimate is

too high since it is just using HR plus some height/weight/age formulas that don’t take hormones/metabolism into account. Anyway, you are not alone in questioning some of its measurements! 

[Lifedancing1]

Now it has become suddenly erratic in terms of the number it comes up with
one day HRV is 19 the next day 60. I just do not consider it reliable. I
guess how we feel is the most important thing!

[Tlinlo7don]

Agree, been looking at but basically ignoring. Looking at other monitors
that are supposedly more accurate.

[songsj]

Does anyone know if fitbit is looking into this to see if it is a hardware or software issue. And are they trying to fix it?

[Tlinlo7don]

I have not see any notifications or articles, indicating that a fix is in
the works or if fitbit even considers this a problem.

[AngieB1285]

Min is low too.  From 25 to 40.  I work out daily and eat healthy.  So I am hoping it isn’t accurate 

[Miss_Moe]

I feel better knowing I am not alone!

[Miss_Moe]

Agree 100%. We need to listen to our bodies and pay attention to how we feel

[Nova123]

Thank goodness for this thread. I just spend the better part of the last hour thinking I was dying 🙈

[Less13]

Mine went from 31 to to 100 then 120 then another number in the low 100’s
and today ( last night) it is not reading anything

[LizArt]

Imagine me at a mostly consistent HRV of 11 ... wake up to that ... I'm buying a strap off of Amazon that runs like $42 and is confirmed compatible with Elite HRV. I'll post an update, for sure.

[Tlinlo7don]

Looking forward to it.

Thomas D Lewis

[mebolah]

Me too. Says mine is 12 ms. I work out, sleep well, manage stress, no health issues. Doesn’t make any sense. 

[Less13]

My last one said 142. It used to be in the 30’s.

[Tlinlo7don]

What did you do to get the extreme rise.

[n8vz]

I’m a 77-year-old male with a rest HR of 55.  I regularly exercise.  Main exercise now is brisk walking up and down hills.  Before the pandemic I also played basketball a few days a week.  I hope to eventually get back to that.  My HRV varies all over the place.  This graph is a typical recent one.  I have no idea how to interpret this kind of data. Any suggestions?

[Tlinlo7don]

I do not and fitbit really doesn't offer a good answer. Seeing a doctor to
try to get an understanding of this health marker, this afternoon. I'm
thinking the fitbit reading is flawed. Mine stays between 11 and 15 and I'm
very active with hiking and tennis.

[mebolah]

Keep us updated.