Heart rate drops from 160 to 100 after 50 min running

Mica 5 days ago

Using Forerunner 255 (former user of Forerunner 235 for 7 years), noticied that after about 50 minutes running and reaching 160bpm, it suddenly went to around 100 bpm.

Is it related to sensor? Outside temperature was about 18-20 degrees.

Top Replies

ovekvam 5 days ago in reply to Mica +2

It is not so strange that it acts like that. The sensor picks up a noisy signal. The algorithms in the watch will continuously try to determine which of the many frequencies that is your heart rate. Some…
6742038 4 days ago in reply to ovekvam +2

Sometimes I think Garmin employees are writing here pretending to be users. No, it's not normal for your heart rate to suddenly drop by 60 bpm after 50 minutes of running. Please stop framing this as normal…
5858725 5 days ago +1

Sometimes it happens the same to me, after about 10 minutes the bpm increases suddenly from 130 to 150... I guess it's a issue form the watch readings.

All Replies

0 globoos 3 days ago in reply to 6742038

I have the same feeling. They keep introducing new functions, but they can't handle basic readings. Therefore, new functions based on these readings are also wrong. Heart rate spikes, I reset the watch during the run to get it back to normal. Interruptions in training recording or altitude spikes are standard. I wonder if it's only the watches from the Forreuner group that are so weak or if the entire Garmin has fallen so low.

0 Bitti 3 days ago in reply to global_local

Also, you only have to google for "Apple watch HR problems" or "Huawei watch HR problems" to get loads of similar complaints. It's not only Garmin.

0 unimatrixzero 22 hours ago

I've the same issue with a HRM connect via ANT during strength training. After around 40 minutes the the recording stops or it stuck at a HF number today it was 106 and then after a while 90.

When I move the HRM a little the numbers came back but then it stops again.

P.s. Can't run at the moment because of a muscle issue in my calf

0 ronand 8 hours ago in reply to unimatrixzero

Some HRM straps turn off after a few minutes if they do not detect vertical movements. My HRM Run does this while my HRM Pro seems to stay on for the full activity.