Andrew Coggan wrote:
marcag wrote:
I was able to use the expression "stamina"
I added it to the PD history metric chart. Stamina on the Y axis, date on the X. Is this correct ?
It seems to stay at 82% over the last 90 days.
I am doing this right ?
What do you look at to calculate it ?
Is 82 good :-) ?
Yeah, I see now that the PC version has been updated. Now just need to make sure the Mac version is fixed in the next build (which should be out very soon).
Calculation is proprietary, but note that it simply uses whatever date range is selected via the RHE. IOW, it's not been set up yet to be able to specify a trailing window to calculate a stamina history, like you can for Pmax, etc. (Still need to add the error calcs as well.)
It's a bit too early to provide any firm guidelines, but 82% is probably close to average.
Bringing this from the other thread
Without giving out secrets, knowing what impacts the stamina calculation would be interesting
For Q1 2015 I was 89%, 90% for Q2, 94% for Q3 and 87% for Q4, but 96% for the first 30 days of Q4. The trend makes sense, I peaked for a HIM.
Where I get sceptical about the metrics is when I don't understand how they are generated.
Here is an example
On November 15th I did a ramp test that sent my FRC way up, although mFTP seems fine
But then Dec 23rd it drops down and my mFTP rises to 321 for no reason. While I would love it to be true, my FTP is not 321 :-) The only thing I see is on the Dec 23rd workout I have 1182w for 1s duration in the MMP chart, 734w 2s, 587w 3s and it tapers off normally....that doesn't sound too crazy. Maybe it's the problem. My pMax went way up
Without understanding what causes these fluctuations, I don't know if I trust the numbers.
My 321w mFTP is wrong
That 96% stamina for the 30 days of Q4 seems high.