I have an issue with my Vivoactive 3. During the middle of an activity the heart rate suddenly drops by 30-40 beats. Here is an example.
This was on a treadmill. The first 3-4 minutes were around 2 mph, and slowly ramping up to 3 mph by around the 8 minute mark. The rest was at a very steady pace of 3 mph till about the 28 minute mark when I drop the speed back down to 2.5 mph. The pace is not shown as I am unable to get it to be calibrated.
Notice the drop in the heart rate at roughly 19 minutes. It dropped from 100 to about 60. Nothing has changed. The watch OHR was cleaned prior to the exercise . In addition, I am wearing it as per the guidelines issued by Garmin.
A few minutes after the drop, I used the Google Fit app on my phone to measure the heart rate and it measured near 100. In addition, about 5 minutes after the conclusion of the exercise, I compared the heart rate from the Vivoactive 3 to the Google Fit app and both reported close to 80.
This happens fairly frequently. I have in the past worn the chest strap and don't recall seeing the drops. However, that is a pain to wear.
I used a VivoactiveHR which also exhibited similar issues. Under normal rest conditions, the heart rate seems reasonable with no sudden inexplicable jumps.
Anyone else notice these sort of issues. Thanks.
