I tested a target HR workout to see if it matches with target power.
Result, it differs a lot.
Example:
In my training, i am on target 140w power, my heart rate is 110bpm.
Still staying on 140w power, I switch to HR target, the HR target displayed is 132bpm, while it should be displayed at 110bpm.
Test carried out on the last interval, so with my heart rate at the highest.
My max heart rate is set to 166pm.
What method of calculation do you use to calculate the target HR?