Does lactate threshold auto-detection work well?

Is it normal for the threshold auto-detection to change my heart rate and pace after just a 30-minute run?

0 Bitti 3 months ago

Nobody outside Garmin knows what is "normal" for the new lactate threshold detection, since Garmin doesn't document the way it works in any way.

Based on what I've observed and what I've learned from a couple of emails from Garmin, the new algorithm isn't based on detecting the threshold from a single run (like the old LTHR test). Rather it collects data all the time and adjusts the threshold when it feels like it.

0 9489794 3 months ago in reply to Bitti

so, those values can go up and down, depending on whether I improve my physical condition or stop training for a while?

0 Bitti 3 months ago in reply to 9489794

Maybe, probably, who knows?

The new algorithm is even stranger in the sense that there seems to be two kinds of "detections": The watch may notify you about a new detected threshold after an activity. Or a new data point may silently appear in Garmin Connect, even on days with no running.

Based on Garmin emails, "There are several other factors [...] contributing to an LT estimate [...], for example- race time predictions.", so apparently the estimated lactate threshold may change at any time when those "other factors" change.