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Max Heart Rate - Auto Detection - Not updating

My Forerunner 745 has the "Max Heart Rate - Auto Detection" setting "On". Currently my Max Heart Rate correspondes to the formula 220 - my age.

Despite that on several sessions my Heart Rate peaked higher the my current Max Heart Rate, it is never updated.

Should I update my Max Heart Rate manually to correspond to the higher recently recorded or should I leave the current and trust the Auto Detection option?

Thank you!

0 Thibaud J over 3 years ago

Same issue for me; i do not see any Auto detection.... despite that this option is on.

0 Ricardo S. over 3 years ago in reply to Thibaud J

Recently I tried to use the watch with my Polar H10 chest strap. The Forerunner 745 just fell in love with it! My Max Heart Rate was updated, the same with Lactate Threshold. My Heart Rate Zone are much more accurate.

It looks like for the Forerunner to work has it is suppose to, it needs a chest strap.

If you can, give it a try!