Lactate Threshold detection issue after reset factory

Former Member over 6 years ago

Hey guys,
I'm using the lactate threshold value with a HR4 strap since my FR630, and it used to work fine with my F5s as well.
I really like this stat and I find it relevant in training.

A few days ago, my F5S got stuck and I did a factory reset. Worked fine.
Then I paired my HR4 once again and went running.
A few workouts later, I noticed that the lactate threshold didnt' move, nor the heart hate, neither the speed.
It looks like it's a manual value...

Does any of you have any idea?

Thank you! ciq.forums.garmin.com/.../1432619.jpg

0 TrippyZ over 6 years ago

Have you been getting on device alerts about LT detection?

0 mcalista over 6 years ago

There is an ongoing issue that after firmware updates, the watch can import incorrect HR information from Garmin Connect including zones, LTHR, change of zone calculation method, etc. I suspect that your factory reset has triggered the same problem.

Set your zone method to be %LTHR in GC and perform a sync, and then do a run that is likely to result in LT detection (ie. including sustained pace below, and then above, your likely LTHR). This should restore good HR datapoints to your watch.

0 Former Member over 6 years ago

Thank you guys for your answers,
I tried mcalista's suggestion today and ran for a 2x10' at treshold pace.
It worked! Thank you very much!
I hope these posts could be helpful for anyone in the same situation,
Regards

0 Fenix X over 5 years ago in reply to mcalista

Hi I have same problem upgraded from Fenix 3 to Fenix 5 then since My Fenix 5 (with HRM Run belt) not geting LT detection, 2 test failed...

Software 14.10
ANT / SNS 6.90

So I'll try today solution finded on this forum:

- I Deleted running & swimming HR zones in my GC & fenix
- how shall I set HR max ? & LT ? & LT zones in User Profile ?

Then I'll try get new LT test today and see if that detect new Lt

0 Fenix X over 5 years ago in reply to Fenix X

worked but My LTHR detected is way to low 154 to previously 167 bpm what's impossible bcs since 4 weeks i get Fenix 5 I worked quiet hard. that messed up my Vo2 HR zones based on %LT and pf course Training status = Unproductive

If i Delete (export ) all workouts since New wrong LTHR
than change my LTHR manually
and upload my activities back it will recalculate with new LTHR set manually all metrics ?