Cardio Workout has inaccurate heart rates.

I have a venu 3 with software 10.2 version. Whenever I used the cardio mode, it shows my heart rate at least 50 bpm too high. My heart rate will be around 70 and I can start the cardio and all of a sudden it states Im at 140. In reality by heart rate is about 75. After about 5 minutes of warming up it states my heart rate between 150 and 180. Maybe in actuality it's 100. When I do a cardio program I have to pick another activity (indoor work, HITT, Whatever) to have the Garmin calculate correctly. Unfortunately this extremely inaccurate heartrate, then messes up stress levels, body battery, recovery time, sleep needs, etc. This is very annoying.

0 1232085 over 1 year ago

I am having a similar issue.
I get on the cross trainer and the watch HR raises up to 140ish when it’s still around 7ish.
The only way it settles if I take the watch off for a minute or, two.
I am thinking of returning the watch because, of this.,.it is so annoying.

0 tso123 over 1 year ago

Does changing the activity really make a difference? I always thought it's just wrist-based HR sensors being bad at sports / movements with lots of wrist movement.

Here' how it looks on my last 2 low intensity mobility sessions with ~5 min "warmup" on the cross trainer:

The reading I'm getting from the crosstrainer during warmup ist ~100bpm which is more in line that what I am feeling.

0 JackDrake over 1 year ago

For me HR works fine, even in barebell or hiit workouts with a lot of wrist movement. This was a hiit workout with short warmup and cool down:

Did you try to choose "crosstraining" as activity when going on the cross trainer?

0 BippityBoppity over 1 year ago

Could the watch be picking up your cadence instead of your heart rate? That happens to me all the time. I had to go with a chest strap for pretty much every activity where I care about an accurate heart rate. Also known as cadence lock.

support.garmin.com/.../