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VO2MAX declines 8 days in a row, Why?

RunYuryRun
over 3 years ago

VO2MAX declines 8 days in a raw, from 62 to 55 Why? What it could be? Sleep score, HR , training over all looks OK as usual. 

  • 0 over 3 years ago

    Have your max HR changed? Check that the HR zones are the same. 

  • 0 over 3 years ago

    Maybe there is a cold creeping in and even if the average HR is in your usual ball park, there can be short variations wich trigger the algorithm to decline. 

  • 0 over 3 years ago

    same for me but over a couple of weeks. down from 47 to 44 yesterday while training load the same !

  • 0 over 3 years ago

    Has your weight increased a good bit by any chance in the last couple weeks?  

    The big data points for vo2max are  pace (or cycle power) , heart rate vs heart rate max , and weight.  

    So often when weather gets colder you could be wearing more clothes, driving HR higher for the same paces of before due to weight and restriction of movement.  You could be getting bad HR data on a cold wrist. 

    Whenever I go on a winter trip somewhere nice my vo2max always goes UP when I am finally not wearing winter gear or running on snow/ice!

  • 0 over 3 years ago in reply to e7andy

    Thank you! Yes, max HR changed. It’s attached to my Lactate threshold which is sharply declined. Nevertheless, still need figure out why Lactate Threshold declined. 

  • 0 over 3 years ago in reply to BeneGi

    Thank you! Maybe but previously it declined just for 1-2 points. And the whether hasn’t changed dramatically. 

  • 0 over 3 years ago in reply to NickMN

    Thank you! Have my weight the same. Whether gets colder but not so dramatically, generally still wearing same clothes. It has happened previously but not so big gap, usually just one to two points. 

  • 0 over 3 years ago in reply to RunYuryRun

    ok, you will want to set your HR Maximum manually (same with resting) these values don't change much so want them set to a good known value.  I don't know why Garmin would lower your maximum HR automatically (a max is a max... what confirmation would it use to lower it?!)

    That is the biggest player in your vo2max - if you usually do a tempo run at 170bpm with a max setting of 195 that is a lot different in the watches view compared to 170bpm tempo run with a maximum setting of 185bpm.  Now it thinks you are really pushing it at 91.8% of max, compared to just 87.1% of max.  

    Sorting through activities to find a good maximum can be tough, or doing a maximum HR test (even then if it is just in training it is hard to get HR up high enough)... a 5k race finish sprint will result in a higher maximum much of the time at least in my experience!

  • 0 over 3 years ago in reply to RunYuryRun

    I believe LTHR shouldn't change significantly. It could be a one off error.

    If Garmin detects a new LTHR for me, I will choose not to accept it if the value is significantly lower.

  • Former Member
    0 Former Member over 3 years ago

    same for me since I installed new beta firmware