Skip to main content

Hi,

I wanted to adjust the HR zones from the default to the Karvonen ones, as they seem more realistic for me. On doing this i discovered that even though this change boosted time in zone 4 (less zone 3) for near identical rides, it halved the RE (relative effort).

On inspection just the act of switching the HR zones to custom, but setting the zone boundaries to those calculated by the 'auto' feature had the same effect. (Forcing a recalculation by switching ride type and back)

I want to carry on getting the consistent RE so I can look at the historical 'fitness' (aka training load) data, so I shall carry on with the Auto zones. To me this can only be a bug, unless there is something I am missing?

Hey @Maztj,

Apologies for the delay but hanks for reaching out about this. You are correct in your observation as we are aware of some differences in calculations between custom zones and max HR.


Both are going to give us a unique lactic threshold heart rate for us to process the relative effort score from and this is causing some variables. We're investigating ways to make these more accurate between the two HR zone types, ultimately, they won't be exactly the same but we would like them to show more similar results.


We don't have an ETA when a better solution will be available but it is on our radar.
Until then, I would suggest using Max HR as you've done if the Relative Effort scores seem to be low.

Reply


Terms & ConditionsCookie settings