TransWikia.com

False hrm results

Bicycles Asked by Alex Par on July 22, 2021

I use Garmin edge 520 with Garmin dual heart rate monitor and it shows completely false results like maximum hr >180 and average hr 150, while my ride is easy, slow and flat and I don’t feel any discomfort. Measuring my hr with my finger I get much lower indications. Probably this happens because of an (controled) arrhythmia that I have. How to overcome the faulty results of my hrm? Is there any monitor or system that may be more acurate? Thank you in advance!

4 Answers

  1. Try replacing the battery, it could be running flat.
  2. Make sure you're getting proper contact with your HRM to your chest - try adding some conductive gel.
  3. Try a different soft strap, they wear out after a while.

I've had inconsistent readings from all 3 of the above issues at times.

Answered by Scottmeup on July 22, 2021

As mentioned already, one likely problem is poor contact.

One easy way to test for poor contact is to get the contact area wet - and I mean wet.

Put on your HRM strap and get your GPS unit. Turn on the GPS unit, and when it's reading your HR - or when it should be reading your HR - take a full water bottle and soak in between the HRM strap and your skin. Get it really wet.

Now see how your HR is reading. If the reading improves and starts to reflect what you get if you measure your pulse by other methods, you have problems with your HRM because of bad contact. You might have to wiggle your strap around a bit, or wet it more than once and wiggle it around a bit.

If this doesn't result in improved accuracy, it doesn't really mean anything - you could still have contact issues.

If you don't want to get your floor wet, do this outside or while standing in a shower or tub.

Answered by Andrew Henle on July 22, 2021

Since no-one else mentioned it - this can be caused by the air causing some synthetic shirts/base layers to flap/flutter.

I had a top that got relegated to use on the indoor trainer because when wearing it outdoors my HRM would record 200+ any time I picked up any speed.

Answered by Andy P on July 22, 2021

After trying the suggestions from other answers, consider that the numbers might be real. I do have the same problem and I returned my first HRM because I thought it was faulty. It turned out that I just do have unusually high heart rate without any known heart conditions, so that 150 is more or less normal for casual riding and the maximum is somewhere beyond 200. The "220-age" formula is not really true or even a good approximation.

Answered by ojs on July 22, 2021

Add your own answers!

Ask a Question

Get help from others!

© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP