This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How does the auto max heart rate detected is calculated?

Hi,

I just want to see if I need to manual calculate my max heart rate as max heart rate should in theory decrease as we age. As a result, I want to confirm that:
1) Auto detect of max HR is based on a recent time period (last two months - 6 months) and not based on my the max HR of my last couple years' max HR.
2) Assuming 1 is correct with a short time period; does the algorithm take average of all the max of all my run or it only take the absolute max as some might have spiked noise data. Or it cleans up per exercise on noise and take the max of all exercise in the period?

Regards,
Brilly

Top Replies

HermanB over 5 years ago +1

Hi,
Does the algorithm take average of all the max of all my run or it only take the absolute max as some might have spiked noise data. Or it cleans up per exercise on noise and take the max of all exercise…

All Replies

0 chunkywizard over 5 years ago

For 1) after you turn this on, then it’s only subsequent runs that count. 2) I believe it just looks at the figure so a spike will cause you to get a new max.

For me, especially if you are getting older, set it manually to the max after your hardest effort in the last month. Then review it every 6 months and reduce it if you are far away from 6 months ago

0 ASmugDill over 5 years ago

For me, especially if you are getting older,

Isn't everyone? :confused:

I just look at my list of runs on the Activities page in Garmin Connect online once in a while, and look for the greatest value in the Max HR column. If it seems too low, then I make a point of doing a ‘harder’ workout, even though I'm unlikely to be getting good enough results to produce new personal records with it.

0 chunkywizard over 5 years ago

Maybe I should have said, getting past your peak...

0 BrillyTsang over 5 years ago

Many thanks for both chunkywizard and ASmugDill for the answer. I was hoping it might be more intelligent. May be I will just do the LTH test to check the max on the last flat out 3mins segment to measure Max HR.

0 HermanB over 5 years ago

Hi,
Does the algorithm take average of all the max of all my run or it only take the absolute max as some might have spiked noise data. Or it cleans up per exercise on noise and take the max of all exercise in the period?

Regards,
Brilly

Think of it as an HRmax catcher.

If your device confidently detects an HR higher than your currently set HRmax, your HRmax is updated to reflect the new higher value.

It can correct your HRmax if your actual HRmax is higher than the one you've set - or was estimated with the 220-age formula.

It can't correct when you're stored HRmax is overestimated.

0 Tom Hale over 1 year ago

If you have a 955, this thread shows that there's a bug that Garmin has requested feedback upon:

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-955-series/309583/max-heart-rate-changed-without-meeting-the-new-max-heart-rate-during-the-activity?pifragment-1279=5#1500241

I just encountered the same bug on my 255 music.

0 anderbroadman 11 months ago in reply to HermanB

It keeps reducing my HRmax, so it looks like it will correct an overestimated HRmax.

It's driving me nuts to be honest.