How to change running power zones

Hi tmk2, and thank you for your answer. My heart rate data was correct, and measured the whole easy run on Z1. That makes even less sense...

Hi tmk2, and thank you for your answer. My heart rate data was correct, and measured the whole easy run on Z1. That makes even less sense...

Could you post a link to the concerned Activity? We can try so see whether there is something suspicious, or abnormal. Do not forget to set the Privacy level of that specific Activity to Everyone. Please also post screenshots of your Max HR and the Resting HR from the Reports page, for the given day.

45-139 min-Max HR for that given day (although I reached 142 during the activity).

still Zone 1... I do not understand...

4069425 said:

I do not understand...

If you do not understand why you have the average Power output over 250W, then you have to ask the question to the author of the Stryd Connect IQ app. The value does not come from the Garmin watch, it comes from Stryd. Garmin user forum is not the best place to seek the answer - most of us know nothing about it. You better contact Stryd.

If you do not understand something else, relevant to Garmin and not to Stryd, then please elaborate closer on it.

I think he doesn't understand why the activity has a relatively high anaerobic effect, while heart rate stayed in zone 1 for the major part of the activity. Initially he concluded this had something to do with power zones, but I do not believe it to be the case here, i.e. running power data is not taken into account for training effect calculation.

tmk2 said:

I think he doesn't understand why the activity has a relatively high anaerobic effect, while heart rate stayed in zone 1

OK, sorry, I missed that. The anaerobic threshold is detected with the help of Heart Rate Variability - when it suddenly drops, it means you are under training stress, and reached the Lactate Threshold. So when the watch shows a relatively high anaerobic effect (2.4 Maintaining), it means it detected low HRV, and it is actually not that important how high the HR was.

Why the HRV was that low, would be another question, but only a physician with the adequate equipment could answer it.

... it is, of course, also possible that the HRM did not work correctly (for example due to the peripheral vasoconstriction, or because of a wrong fit of the wrist band, etc.). If this case is suspected, then using a chest band HRM will certainly deliver more reliable data than the wrist OHRM.

Forget the power, i do not understand that a Z1 training had a 2,2 impact on anaerobic. There has not been any problems with HR sensor, you can see the graph, stable 140bpm. I was relaxing, recovering. I do not understand why that 2,2.