Related
Options

Max HR and Auto Detection ON

Bodya
over 4 years ago

Yesterday I realised on my watch User Profile -> Heart Rate -> Max. HR is set 199.

I have no idea is it manual set or autodetection based on previous trainings (actually previous year I was much more active, and now cos of trauma significantly decrease intensity of my activities). I decided 199 is too high for me and to manually set it to simple standard value by formula 220 - [age], for me it is 220 - 45 = 175.

Also, I have checked Physiological Metrics -> Auto Detection -> Max. HR On -> ON.

As I was curious for autodetection, so I did a run with HRM Tri, for experiment did some speed interval and get 178 HR, what was recorded as max HR for this run.

Later I have checked User Profile -> Heart Rate -> Max. HR is set 175.

Why it didn't changed to 178? What are conditions to have Auto Detection working properly?

Top Replies

All Replies

  • Former Member
    0 Former Member over 4 years ago

    I had similar issue although my the max heart rate was correctly calculated at 170 (220-50) but I also did a ride where it went up to 175 (recorded as the max heart rate for the ride) but the max heart rate did not automatically adjust but stayed at 175.  

  • 0 over 4 years ago in reply to Former Member

    did I get it properly? In your case Max HR was changed to 175 after a ride?

  • 0 over 4 years ago

    If you go to a myzone gym you will see everyones heart rate and realise very quickly that everyone is very different in my case low in a lot seriously high... so the 220 - age or whatever is pretty useless...barely a ball park!  I really would suggest you do a ramp test or fitness test and see what you hit...

  • 0 over 4 years ago in reply to 4034694

    True. This formula is has been proven incorrect. does more harm than good.

    Also, max HR can be only rarely be achieved in workouts. I only get within 5% of my max HR every 6-12 months.

  • 0 over 4 years ago

    I had a similar experience. I decided to test the automatic max heart rate feature and set it low then did a run where my heart rate exceeded the maximum. My maximum heart rate did not adjust. I also set my LTHR low and that didn’t adjust either. I don’t know if the auto adjust doesn’t work of if it only works under certain conditions. There’s no way to tell because of Garmin’s minimal documentation.

    I wonder if Garmin has disabled this because of all the false heart rate spikes that folks have seen.

  • 0 over 4 years ago

    Your maxHR is NOT the maxHR you are able to reach at peak. The Definition of MaxHR means it's the highest HR you can sustain for an amount of time (I believe it was a hour) without risking any negativ impact on your health. So its absolutely correct, that you regularly top your set "maxHR" at peaks.

  • 0 over 4 years ago in reply to 5257661
    5257661 said:
    he Definition of MaxHR means it's the highest HR you can sustain for an amount of time (I believe it was a hour)

    Urrmmm most definitely not. Max HR is exactly what it says it is, the maximum heart rate you can attain during an activity. It is normal to take the maximum averaged over a few seconds to ensure it's not just a blip.

    Yannis77 said:
    This formula is has been proven incorrect. does more harm than good.

    It's not been proven incorrect but it is well know to have limitations. However 220-age is a good starting point for most people. As noted, you need to do a proper test to identify your max heart rate. Ideally repeat the test after 6 months or so if starting out, as it is possible your fitness level or mental approach meant you might not have reached your tru maximum

  • 0 over 4 years ago in reply to 5257661
    5257661 said:
    Your maxHR is NOT the maxHR you are able to reach at peak. The Definition of MaxHR means it's the highest HR you can sustain for an amount of time (I believe it was a hour) without risking any negativ impact on your health. So its absolutely correct, that you regularly top your set "maxHR" at peaks.

    This is just plain wrong.

    I think what you are referring to is your Lactate Threshold Heart Rate (LTHR), which is the point at which your body can clear lactate just as fast as it can produce it. So efforts at this level are generally sustainable for 25-60 minutes. You can work harder than this, but you can expect fatigue to accumulate quickly.

    Maximum heart rate (MaxHR) is that fastest that your heart rate can beat, and doesn't really change with fitness. For most people, LTHR is generally 86-92% of maxHR, and usually 90-92% for those who train regularly.

    I am not aware of any widespread and reputable evidence that training above LTHR risks any negative health impacts for healthy individuals.

  • 0 over 4 years ago

    Same story here,I've manually set it to 190, during a run reached 194, but on the watch MAX HR is 190

  • 0 over 4 years ago

    MAX HR does not depend on fitness and it declines steadily with age. At 45 you can expect about 180. With training your max HR won; t change, but what will change is your ability to sustain an effort at close to max HR - in the VO2MAX HR zone. That is highly trainable and as you get fit your VO2MAX HR will get closer to your max HR. For me maxHR autodetect as always been problematic because once in a while the HR straps give a spike that is not realistic say 280, and the watch then record it and reset the zones inappropriately. I find it much more convenient to turn it off and set maxHR myself, using the formulate as a base and adjusting on experience. After an intense workout you can check the maxHR for that workout in the activity data and decide if you want to update your setting.