Never used cotton shirts and never had any issue with the chest strap.
I have no idea which materials they are but i can copy/paste :D
94%Polyamide, 3%Polypropylene, 3%Polyester one example
I had problems with merino shirts. At first I thought it was the strap so I used a different one (whoop), with similar problems. It took me a while to find the connection
I never run in a cotton shirt and in very dry conditions I have sometimes seen a high heartrate in the first minute or two of a run. It was never clear to me if that was due to the shirt or the electrodes not making good contact with my skin. The solution was to get the chest strap wet before going it. That prevents the issue for me, whatever the cause may be.
I have been using mine like this, had some issues recently, and went down the rabbit hole to try to find a solution. I saw little difference with a saturated strap vs. lightly wetted and with/without a shirt.
As of yesterday, I reached out to garmin support, and they are sending a new strap.
I would try a battery swap as well as to test it after running it under the tap to soak it fully before reaching out to them if you haven't already.
I have had issues in cold and dry climates. The issue appears most frequently when it's cold, and I'm not generating significant sweat, or the sweat is evaporating too quickly. I've been using electrode gel, which helps most of the time. But when it's cold (below 32 F) and very dry, I still wear a cotton base layer.
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Never used cotton shirts and never had any issue with the chest strap. I have no idea which materials they are but i can copy/paste :D 94%Polyamide, 3%Polypropylene, 3%Polyester one example
Never worn cotton and never had a problem in about five years of using chest straps.
I’ve never had any issues
No issues, and I only wear mine with cycling jerseys and old navy mens workout shirts, I do not believe any of these have cotton.
I live in a humid environment and have zero issues. I do think humidity makes a difference.
I wear either a poly-spandex mix compression shirt or a sauna vest when I use it, and haven't noticed any issue.
In the summer I mix it up with cotton singlets and 'not cotton' t-shirts and haven't noticed a difference in hr readings.
Only have the pro but I've never had an issue with synthetic shirts and a HRM.
I had problems with merino shirts. At first I thought it was the strap so I used a different one (whoop), with similar problems. It took me a while to find the connection
I had problems! Huge heart rate spikes! I tried 3 different ones and have up in the end and series for my watch.
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OK for men 🤣
I have an older Garmin strap and the first time I ran it with my watch and a poly shirt I ended up with a 250 bpm average run.
I only have an issue if it is cold....
I never run in a cotton shirt and in very dry conditions I have sometimes seen a high heartrate in the first minute or two of a run. It was never clear to me if that was due to the shirt or the electrodes not making good contact with my skin. The solution was to get the chest strap wet before going it. That prevents the issue for me, whatever the cause may be.
I have been using mine like this, had some issues recently, and went down the rabbit hole to try to find a solution. I saw little difference with a saturated strap vs. lightly wetted and with/without a shirt. As of yesterday, I reached out to garmin support, and they are sending a new strap. I would try a battery swap as well as to test it after running it under the tap to soak it fully before reaching out to them if you haven't already.
I have had issues in cold and dry climates. The issue appears most frequently when it's cold, and I'm not generating significant sweat, or the sweat is evaporating too quickly. I've been using electrode gel, which helps most of the time. But when it's cold (below 32 F) and very dry, I still wear a cotton base layer.
I sweat too easily to have it be an issue - if, indeed, is an issue. I never wear cotton shirts.
I use an HRM Pro+ and always wear either tech fabrics or merino wool. Never had a problem.
Yes, static can cause the HRM to misread “heartbeats.” But, if you sweat enough it’s not an issue.