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Is there a minimum theshold for Resting Heart Rate?

Hi folks.

Quick question re the resting heart rate 7 day graph on my Garmin 235 - see picture below:

Whenever my rhr drops below about 32bpm the readings disappear from the graph. The minimums were shown correctly on the 4 hour chart - they were 31, 32 and 31 respectively on Monday, Friday and Saturday - but the graph shows blanks. The average calculation seems to have taken all the values into consideratio though.

So, is there a minimum threshold or some other reason why the graph skips these values?

Thanks in advance, Andy

0 Former Member over 9 years ago

Hi, I have the same behavior on my watch. Also a low RHR (below 32) not visible on the graph.

0 Former Member over 9 years ago

my guess here is that garmin hr is glitching if you go below 30RHR
details might be found here
[HTML]en.wikipedia.org/.../Heart_rate

0 ANDREWGTURNBULL over 9 years ago

#SinusBradycardia

Hi folks.

Ok - so I guess my question now is: What is the minimum heart rate that the OHR on the Garmin 235 can read?

My rhr this morning was 30bpm - and it seems happy with that, but I have no data for the previous 4 days on the graph.

Cheers, Andy

0 kalamarios over 9 years ago

Hi folks.

Ok - so I guess my question now is: What is the minimum heart rate that the OHR on the Garmin 235 can read?

My rhr this morning was 30bpm - and it seems happy with that, but I have no data for the previous 4 days on the graph.

Cheers, Andy

I've had a similar problem which I documented in this thread:
https://forums.garmin.com/showthread.php?349512-No-resting-heart-rate-(RHR)

Maybe Garmin didn't expect endurance athletes with low 30s RHRs would be using the 235? ;-)