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Max HR detect?

Former Member
Former Member
Does the 235 auto detect max HR? It seems to allude that it does in the manual, which surprised me.
  • Former Member
    0 Former Member over 9 years ago
    There's a default setting in Garmin Connect, but it's best to customize your max HR and zones if you know what they should be.
  • Former Member
    0 Former Member over 9 years ago
    So its done on the Connect side then?
  • Former Member
    0 Former Member over 9 years ago
    There, or you can do it in the GC mobile app. Your max HR and HR zones default is set by all the info (sex, age, weight, etc...) you put into GC. You can also customize the fields to whatever you like. You know your body better than anyone, so you may want to change the default settings to better fit you.
  • Max HR on GC is likely based off 220-age which works fine for younger folk but not as you get older. It's a reasonable starting point. There are other formulas out there 207-(0.7*age) will give you a different number that may be of better use if you are older.

    If you really want to find out what your max HR truly is then you'll need to do some testing following any number of different protocols you can find on the interweb, or go to a lab and get tested.

    Enter age here and see what you get - http://www.brianmac.co.uk/maxhr.htm They come out a little bit low for me (about 5 or so bpm) but work well enough when you work out HR using Karvonnen -

    max HR - resting HR (RHR) = heart rate reserve (HRR)

    Training zones = (HRR * training %) + RHR

    For a 50 year old, resting heart rate of 65bpm who wants to train at 70% maximum

    207-(0.7*50) = 172 bpm (maximum heart rate)

    172-65 = 107bpm (heart rate reserve)

    (107 x 0.7) + 65 = 140 bpm
  • Former Member
    0 Former Member over 9 years ago
    I'm thinking I wasn't clear in my question. Does the 235 internally detect, and report, a new max HR when found? Reading the manual, it seems to say it does.
  • Former Member
    0 Former Member over 9 years ago
    No. It'll set a max HR default for you, but every individual is different. The default may be close and you can stick with it, but if you know your actually MHR, then setting that value will only benefit you.
  • Former Member
    0 Former Member over 9 years ago
    No. It'll set a max HR default for you, but every individual is different. The default may be close and you can stick with it, but if you know your actually MHR, then setting that value will only benefit you.


    yes, It only detects a new VO2max
  • Former Member
    0 Former Member over 9 years ago
    While in theory its a nice idea for the default value to be over written by an actual value, you only need a glitch in the sensor and an abnormally high reading to be recorded and your Max HR and potentially training zones will be incorrect.
  • Former Member
    0 Former Member over 8 years ago
    What does the manual mean?

    I'm thinking I wasn't clear in my question. Does the 235 internally detect, and report, a new max HR when found? Reading the manual, it seems to say it does.


    But what is then described in the manual? I would assume the FR235 would adjust the value.

    Alex
  • I'm thinking I wasn't clear in my question. Does the 235 internally detect, and report, a new max HR when found? Reading the manual, it seems to say it does.


    Connect does show/graph your daily HIGH and RESTING ... it's accuracy is unknown however, due to these figures being different on each Connect.com, the App and the watch ... ?? I seem to follow the App's data the most because it appears to match more what I believe my HR is.

    Max