Hello,
In the Power Tab, between the Decoupling and HR Lag, there is this field:
“Power @144 bpm 221”
From the Activity HR, it looks like 144 bpm would be the limit between Z2 and Z3.
A couple questions if somebody knows:
Is this VT1 (Ventilatory Threshold 1) in a 3-zone model?
If so, is VT2 the same as FTP?
How do you use this information?
Are 144 bpm and 221w, for me, the upper limits for an “endurance ride”?
One more question, for David, do you automatically calculate (and update over time) the zones and that “144” upper zone 2 based on the uploaded rides? (I just came back to i.icu recently after a hiatus and I don’t remember if I had manually set up those zones a long time ago… hanging head in shame)
Intervals.icu doesn’t automatically update your HR or power zones. It will tell you when it thinks your threshold HR has gone up and you need to adjust HR zones. Likewise when you change your FTP your zones shift with it and Intervals.icu will tell you when it thinks your FTP has gone up.