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How often is your lactate threshold updated?

Mine has not updated since May, despite me running 5-7 times a week, with runs varying from short all out efforts, long all out efforts, to intervals and to easy runs.

0 ss29640 over 3 years ago

Your max HR is too high. Make sure that your auto-update max HR is turned off as well. As a guess, it's probably about 5-10 bpm too high.

To expand further on this, literally, all the fancy predictions aren't accurate without an accurate max HR put into the watch.

0 jmto over 3 years ago

What types of runs do you do? If you run mainly base runs, those doesn't trigger it, if you run just a tempo run with constant pace, those doesn't trigger it, nor just the all in efforts. It needs you running in multiple efforts, fartlek's are good thing to try to get it to trigger.

0 jmto over 3 years ago in reply to ss29640

But what is accurate max HR?

I barely get those, but the HR is max HR I've seen in really really heavy max efforts. I think that is max, not something that can easier to be archived and kind of would then otherwise feel that the data gets skewed if I lower the max HR.

0 ss29640 over 3 years ago in reply to jmto

I'd argue that an accurate max HR is one taken from a chest strap HRM. The Polar H10 is the gold standard currently, and my go-to for heart rate data. I also have a Polar Verity Sense which is also superior to wrist-based measurement.

The watch algorithms are surprisingly accurate if fed good heart rate data. I did a lot of racing last year in 5K and 10K races and the race predictor was spot on.

The best field test is probably a 5K time trial. If the race predictor is optimistic, the max HR is set too high.

0 jmto over 3 years ago in reply to ss29640

Yes, but how.. just take the number directly you have hit with HRM strap? Apparently I even have it less than that.. there's two training from last summer/autumn were the max was 179 and I have it max HR set to 177.

And I have NO lactate threshold in last YEAR. Last measurement is from December 2020 and that was only during that 1 year window.

So should one have the max HR lower than measured?

0 ss29640 over 3 years ago in reply to jmto

Very strange! Yes, I input mine directly from the chest strap. But, chest straps can go bad within six to twelve months.

Mine gets triggered regularly from anything more than an easy run. My Auto Detection> Lactate Threshold is set to "On". If it's not getting regularly triggered, there might be software corruption preventing automatic detection for you. Garmin also recommends lowering max HR if you aren't getting a reading.

I recommend the 80/20 method every four weeks to assess fitness levels. If the race predictor is way off, it might help you diagnose what's going wrong.

0 jmto over 3 years ago in reply to ss29640

It's on, did toggle it just for fun now. Race predictor has looked to be believable. I don't have idea why it's not really happening, but this has been the thing long and I'm not only one with these problems. There are bunch of posts that it's not working and people reporting problems with it.

I remember it working years ago just fine with older watches :)