Hi,
today, again, I noticed a massive deviation between the HR I saw on the Swim 2 and my ANT+ chest strap.
I did some workout on my ergometer. As the chest strap I own does not work under water but is somewhat comfortable to wear and I always use it on my ergometer. It is from Polar and uses ANT+ and unfortunatelly this standard is not supported by Swim 2.... but this is a different topic.
My ergometer can cope with it, so I use a different app to export my TCX data including the heart rate during training. During my last sessions I had a difference in HR of 20 bpm, which I consider already as quite high. Sometimes the HR measured by Swim 2 was according to the HR the ergometer showed, but mostly they differed by at least 10 bpm. But today, it was even worse.
When I was at 230 - 250 Watt and a cadence of somewhat between 90 and 100 after already having trained for 45 minutes, the Swim 2 showed a HR of 75 to 110 - but mostly on the low 100 or below 100 bpm side of HR. The HR transmitted by the chest strap was between 140 and 150, what I consider more likely than the one shown on the Swim 2. It corresponded to hwo I felt ;)
Has anyone ever experienced such high differences? i mean I don't care on a difference around 5 bpm between chest strap and HR measurement at the wrist. Is there something I can improve on wearing the watch? I wear it quite tight, as I prefer it not to move during exercise. I am used to a difference and when I still had my running watch from the same brand as my chest strap, there were minor differences - which is natural and I don't care.
But a difference of > 50 bpm?
Thank you for your support and any help to solve this problem.
Best regards,
Christine
