I did a mountainbike workout of 45 minutes with 78% of the time in heart rate zone Z4. How can it be that i get an aerobe TE of 4.2 and an anaerob TE of 2.9 with that high pulse? Isn't Z4 the anaerob zone and Z3 the aerob zone?
I assume that Garmin uses the term "aerob training effect" to describe how much the session trained your aerobic system, not how much time you spent in the aerob zones.
This may sound as semantics, but depending your school of thought, the distinction can be important. I have seen several opinions on the subject, also from those who are supposed to know a lot about this stuff (which I do not). I think the most extreme to either side are:
You can train your aerobic system with HIIT.
Training in zone 3 and above will damage your aerobic system. To balance this damage, you need to do most training sessions purely in zone 1 or 2, and only for 10-20% of your training go to zone 3-5.
So I assume that Garmin subscribes to a school of thought where the aerobic system is also improved by doing training in zone 4. If the experts can't agree on that, I surely can't claim that Garmin is wrong.
I think it’s firstbeat who subscribed to this and not garmin ;) I also find the training effect numbers odd. I have yet to find a running session where I get a higher value for anaerobic than aerobic effect. My interval sessions apparently are better for my aerobic base than for my anaerobic. Intervals also result in a higher number for aerobic effect than my long runs….
