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Incorrectly adjusted HR zones

4est
6 days ago

Hi.

In the past I've had probably 2 different FR935 and 1 or 2 FR945. My HR zones seemed normal and the activity summaries and training status seemed fine. My max recorded HR during activities was about 175 BPM and HR zones made sense.

A few months ago I went to FR955. Coincidentally (it for to the watch?), a few weeks after that I had a record of 180 BPM during an activity. The watch corrected and increased my max HR. However, it increased it about 3 more times in the following few weeks without and support in the recorded HR values...

Now, my max HR is supposed to be 199 BPM. And it's not changing at all during last 2 months or so. And now, all my activities are categories as "base", I hardly get significant zone 3 (but I used to have a lot of time 4) and all my activities are aerobic.

My training is the same as before, about 3-4 activities per week. I've even tried him climb intervals to challenge my HR, but didn't even reach 175 BPM.

So, what can I do to get the watch on track (but not just guess my max HR or do and lab testing)?

Anyone else with similar experience? Why was it ok before with 4 watches, but not on FR955?

  • 0 5 days ago

    Hi,

    this is a known issue - for me a solution suggested by another user helped: see the following discussion: https://forums.garmin.com/beta-program/forerunner-955-series/public-beta-bug-reports/i/public-beta-version-22-xx/already-reported-bugs-for-lactate-threshold-and-daily-suggested-workout-still-existing-in-current-version

    It worked for a long time, but just recently the HR estimations started to be off again after a 3 week training break due to an infection. When starting training again my HR was generally higher than usual (makes sense due to the slow recovery from recent infection), but what is interesting is that the latest ridiculously high HRmax estimation was derived from a recovery run, where I only ran at an HR of mostly below 130 (with just some short peaks up to 135) and from that run the watch estimated a new HRmax of about 198, whereas my "normal" HRmax should be around 182 (I am 50 years old). I reset the HRmax manually again to 182 and then set the autodetect option to "on" for both HRmax and LTHR and hope it will stay stable and reasonable again.

  • 0 5 days ago in reply to TomL

    Hi, Tom. 

    Thanks for clarifying this. I will probably try it out. 

    But generally, it's really... annoying (?). For me my exact value of max HR was never that critical and I don't know exactly what it was, to be honest. I just liked that (based on that) I could get, training suggestions, effort summary, training tends etc.

    So now the problem I have is that by setting my max HR manually (by not really knowing it) and hoping the watch to fine-tune it correctly (which it didn't do correctly so far), I will continue to have doubts whether everything works fine...

    Like you have nicely put it is the core functionality of the watch. And it's absolutely crazy to realize that so much data from many years of recording, not just activities but 24/7, now obviously has no value at all and needs to be adjusted manually and calculated based on the following few data points...

    This is for sure a great fail of "Garmin's data processing". And the way Garmin has not seriously handled this so far is really... sad.