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Max Heart Rate Changed Without Meeting the "New" Max Heart Rate During the Activity

Garmin-Kevin
over 2 years ago

Hello all,

Some of you have reported that your max heart rate was updated (to a higher value, not a lower value) after an activity to a value higher than you actually achieved during that activity. For example, if your high HR in an activity was 160 and your Max HR went from 181 to 185), this is what I'm concerned about. If you have experienced this, please answer the following:

  1. May we, if necessary, have permission to email you?
  2. May we, if necessary, have permission to view/access your Garmin Connect account?
  3. In what country do you live?

I am tagging some of you that I have seen that mentioned this circumstance:

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I should note that, if you have Auto Detect turned on, the watch will continue to adjust your Max HR to lower values when your High HR in activities continues to get lower as your fitness increases. As your fitness increases, so does the efficiency of your heart, so the Max HR reading will continue to lower.  You will see this more frequently if you set a higher Max HR manually than the watch calculates based on the history on your watch.

  • 0 over 1 year ago

    I'm sorry I read this post only now. I had this issue on Nov. 23th. My FC Max was set to 185 the training before this run. At the end of the run with an FC max during trainning of 148 the watch asked  to set FC Max to 185; during training I noticed that HR Zone were wrong (to low) Yesterday with FC Max of 186 the watch didn't ask to set the new FC Max.
    1. Yes
    2. Yes
    3. Italy

  • 0 over 1 year ago

    hi, there!
    Even though the original post is from over 3 months ago, I've just bought the 955 solar and went for my first run today. MAX HR was updated post run from 183 to 186 bpm, even though the Max HR during the activity was 158 bpm.

    Was there any progress with this matter since the original post? Have those people been contacted?

    For what it matters, I do authorize e-mailing me and having access to view my Garmin Account. I'm located in Brazil.

  • 0 over 1 year ago in reply to CaduPrado

    This is not a bug.

    You reached 158bpm and watch calculated your max hr is 186.

    A bug would be reaching 190 and watch says 185

  • 0 over 1 year ago in reply to Miky

    This is his first comment:

    "Some of you have reported that your max heart rate was updated (to a higher value, not a lower value) after an activity to a value higher than you actually achieved during that activity. For example, if your high HR in an activity was 160 and your Max HR went from 181 to 185), this is what I'm concerned about. If you have experienced this, please answer the following:"

  • 0 over 1 year ago in reply to Miky
    Garmin-Kevin said:
    For example, if your high HR in an activity was 160 and your Max HR went from 181 to 185), this is what I'm concerned about.

    If your maxHR value increases without you reaching your previous maxHR, it's an issue.

    If it decreases, then you are right: the watch calculated your newer maxHR value.

    Your example is a bug also, for sure.

  • 0 over 1 year ago in reply to linsguilherme

    Hi Guilherme! Have you heard any news of improvement in this regard? 

  • 0 over 1 year ago in reply to CaduPrado

    This is exactly what my watch did. My watch updated my max hr to a higher value and I wasn't even close to the original max value during my exercise. 

  • 0 over 1 year ago in reply to linsguilherme

    At the beginning I had entered the value of 193bpm for myself leaving the automatic detection deactivated, it was a value that I had reached once for a few seconds at the end of my strength.
    I recently lowered this value to 190 and reactivated the automatic detection, well at the end of an intense workout in which I reached 185bpm the watch proposed 192bpm, a reasonable value

    The maximum heart rate is inevitably the result of a calculation, since you cannot reach it during normal training since it is a frequency that your body can hold for up to 30s when you are giving your best (for example at the end of a sprint race)

    To find out your maximum frequency, the watch makes calculations by extrapolating it from the values achieved in the various workouts based on their intensity.
    If I do intense repetitions reaching 185bpm several times it is plausible that my maximum heart rate is 192. Therefore if the watch suggests 192 it is correct, if it suggests 180 it is not

  • 0 over 1 year ago in reply to Miky

    Thanks for joining! What you said was exactly what I thought when it updated after the run. My first thought was an algorithm thing that perhaps even took into consideration my self evaluation of a very hard workout and strong feeling. However, me reaching 158 bpm and the watch extrapolating max to 186 (which is pretty close to the max I remember being recorded over the years) seemed a bit overreaching, different to what you had, with a much closer to the max workout. So I came to the forum to confirm this.

    However, getting here I see a bunch of people reporting it as a bug and then Garmin-Kevin commented as a concern and went on to collect data and further analyze it. Now I'm in serious doubt if it is a very elaborated and smart algorithm or something random... 

  • 0 over 1 year ago

    Joining the conversation here as I -- like others with a 955 -- am a bit confused about the MHR calculations. I don't think I've noticed my MHR increasing after an easy run, like OP mentioned. But I have noticed that it will get lower after doing a run where it reaches higher (e.g. Hitting 191 during a run, then seeing my MHR be only 189 after). That's just confusing to me. I guess it's not a bug though and is functioning correctly?