Switching from Running to Cycling V02 Max for Training Status?

Given the winter cold, I've been cycling indoors with power meter pedals instead of doing any outdoor running.  For a couple months, my Training Status said that it was using my Cycling V02 Max Trend for its calculations.  Perfect.

Then last week, I went for a few long walks without an HRM and stupidly used the Run Activity with just OHR.  This resulted in a bunch of bad Running V02 Max readings that aren't meaningful.  Unfortunately, even though I've kept cycling indoors, my Training Status switched over last week and started using my Running V02 Max Trend instead (based on the bad data).  I know that deleting the activities doesn't do anything to the recorded V02 max readings so instead, I'm just waiting and hoping that the Training Status will soon switch back over to use my Cycling V02 Max Trend.

But, I've produced four cycling readings and zero running readings in the past five days and Training Status says its still based on my Running V02 Max Trend (annoying!).  Anyone know how long it takes (e.g. how many activities of one vs. the other) for the algorithm to switch over and start using Cycling V02 Max again?  I think that it likes to default to Running in general, but, if I'm not running at all for a given period of time, it really should start using my Cycling numbers again soon I'd hope.

Thanks.

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  • OK.  It switched back today!  For what it's worth, as of yesterday when it was still using my Running V02 max Trend, out of the past 7 days, there were five days with Cycling V02 max readings and two days with Running V02 max readings.  Today, now that it is using my Cycling V02 max Trend again, looking at the past 7 days, I now have four Cycling V02 max readings and only one day with Running V02 max.  And the last Running V02 max reading was exactly 7 days ago.  So, It looks like the answer is definitely based on the rolling 7 day period.  There's certainly a prioritization algorithm as well.  But anyway, I didn't have to wait a month for all the Running V02s to disappear, so, that's the good part.

    As far as some comments here about the ability to have a single number, my understanding is that V02 max can vary quite significantly between Running and Cycling for reasons including (1) you're using different muscles, and (2) Garmin/Firstbeat are using different algorithms to estimate V02 max based on HR & Speed (run) vs. HR & Power (cycling).  So, I think it's reasonable that they have two distinct readings.

    Anyway, thanks for responding everyone.  

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  • OK.  It switched back today!  For what it's worth, as of yesterday when it was still using my Running V02 max Trend, out of the past 7 days, there were five days with Cycling V02 max readings and two days with Running V02 max readings.  Today, now that it is using my Cycling V02 max Trend again, looking at the past 7 days, I now have four Cycling V02 max readings and only one day with Running V02 max.  And the last Running V02 max reading was exactly 7 days ago.  So, It looks like the answer is definitely based on the rolling 7 day period.  There's certainly a prioritization algorithm as well.  But anyway, I didn't have to wait a month for all the Running V02s to disappear, so, that's the good part.

    As far as some comments here about the ability to have a single number, my understanding is that V02 max can vary quite significantly between Running and Cycling for reasons including (1) you're using different muscles, and (2) Garmin/Firstbeat are using different algorithms to estimate V02 max based on HR & Speed (run) vs. HR & Power (cycling).  So, I think it's reasonable that they have two distinct readings.

    Anyway, thanks for responding everyone.  

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