I have recently started to use runalyze, and I have a question regarding the calculation of VO2max.
It seems like the calculated VO2max values for my runs imported from before I signed up to runalyze gives a higher value than the ones for my runs after I signed up.
I signed up on the 2. of December, so on the shape calculation graph the VO2max curve is dropping heavily from mid December.
Some examples are two quite similar runs with the same average heart rate of 80% HRmax
On the 18. November I ran 10.01 km in 50:24, giving a standard calculation of 39.69, and a heart rate corrected result of 59.03
On the 11. December I ran 12.17 km in 1:00:05, giving a standard calculation of 41.20, and a heart rate corrected result of 53.28
both runs then do the same correction based on my correction factor of 0.85.
What I don't understand is why the 11. December run gives a lower heart rate corrected VO2max value than my 18. November run, since the standard calculation is higher, and both have the same 80% HRmax.