#1
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Garmin HR Monitor Readout: WOAH!
Hey folks.
So, I've been in isolation and taking myself out for daily solo runs. Put on my Garmin HR monitor chest strap for yesterday's EASY 8k on a rolling country road. Got about a mile into the run, looked at the watch, 203 bpm. Bro. I haven't seen that number on a readout since I borrowed my dad's Polar monitor in high school and TRIED to max out, uphill. Weird. So I kept running, naturally, felt normal otherwise, and looked at the watch on the next downhill section. 129 bpm. Phew. Okay. Normal. Jogged out of that downhill into the steady flat for the next bit, and every time I looked at the watch, it was over 168 bpm. That's in my zone 5 I think. And I was running in what felt and paced like about zone 1 or 2. No tempo or threshold or sprinting. I hadn't had extra coffee. No cocaine. What the heck? So I looked up, above the road, and sure enough, I was running kinda under basic residential hydroelectric service wires. Along a tiny cottage road between rocks and the lake, no room to run except under that damn wire. And sure enough, when I ran out from under the wire, the HR returned to real normal, like 130bpm. Anyone get weird HR readouts while near external electrical fields? I ain't the scientist that a bunch of you all are, so I appreciate your input. And my main concern - it's just a weird readout glitch, right? I'm not actually beating at 180 beats per minute while under a hydro wire, right? I found this in a journal article referring to the Polar HR monitor: 3. Electromagnetic disturbances Electromagnetic disturbances may occur near high voltage power lines, traffic lights, the overhead lines of electric railways, electric bus lines or tram lines, televisions, car motors, bike computers, some motor driven exercise equipment, cellular phones or when you walk through electric security gates. Check your surroundings and move away from the source of interference, or remove the source of the disturbance. Thanks for your thoughts! |
#2
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Electrical interference
This only relates to an experience riding under transmission lines as such....
I used to ride trials motorcycles, trials riding gear is especially lightweight and I would have a tendency to wear the tip of the RH glove off of my index finger since I used that finger only for the front brake. There was an uphill/downhill section that we used as a trail to get from point to point in our riding area. Anytime I would ride that section, which was underneath a large gathering of transmission lines, I would get an electrical shock through my finger where the glove was worn through as I touched the front brake. It was a strong enough shock that I would consciously stop using the front brake. We would ride 4-5 hours at a time. No instances anywhere else. 99 out of 100 times when I rode under those transmission lines, I would get zapped. Bike ran fine, no issues before or after. Just a little wake up when I would forget about the overhead energy. It usually comes back to mind whenever I see a set of those power lines........I’m pretty confident your HRM is feeling the effects also.... |
#3
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I'd tend to lean more toward needing a new battery, but I have stood under high power lines in a light rain and avoided get super wet with some success before, so who knows...
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#4
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oh man.
well, i'm glad i'm not getting zapped. i just set a 'New Heartrate Threshold!' every time I run, which is ridiculous. 180 bpm average today for a 12k run at easy pace. ugh. i'm convinced it's the power lines. i'll try a ride away from the lines this weekend and see what happens... |
#5
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I had similar data a month back; ridiculous heartrate.
On the road and trainer. Like HR rising during low efforts?!? Checked and changed the battery - no diff. I rinse the strap about once a week, and it occurred to me I hadn't actually Washed it in awhile. A 10-15 minute soak in the sink, in Woolite, and my numbers are back to normal. Haven't seen high HR under power lines, but that sounds cromulent. |
#6
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I've seen HR spikes in the 190 - 200+ range with both a Cateye and a Sigma HR monitor (non Ant+) which weren't consistent with my effort. The spikes would occur at similar points on this particular loop I ride. In one section I noticed a series of manhole covers. There are lots of underground power lines in this area so I assumed there was some sort of interference from them.
With my Garmin Edge 810 and 820 units and Ant+ HR strap infrequently I'll notice an anomaly in HR data, but nothing consistent . Sent from my moto x4 using Tapatalk Last edited by Krenovian; 05-02-2020 at 10:48 AM. |
#7
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How do you know when to replace the chest strap battery?
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#8
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Svt
Don’t rule out the possibility of Supraventricular Tachycardia (SVT).
After seeing my HR over 200 on several rides I finally went to a cardiologist, after testing I was diagnosed with SVT. Keep tabs on your HR when not near power lines to make sure that’s the issue. Hope that it’s only power lines. |
#9
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One fairly simple test is to check your pulse while observing the rate on your heart rate monitor. If you feel the same number of pulsation as your monitor, your heart rate might be that high. Always a good idea to get checked out by your Doc. If you only notice an abnormal reading with exposure to a big electrical source, I would bet on that. I have heard of other people who made self diagnoses with the aid of a sports monitor. Can't hurt to get yourself checked out.
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#10
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happened to me before, weird spike in heart rate and then crazy drop. It freaked me out. Sometimes those things malfunction and I kept an eye on it. Have in btw then and now gone to a cardiologist and all is well (went for a different reason). I say keep an eye on it
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#11
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Whenever I wear my Scosche Rhythm + and head northbound on the bridge crossing over the river here in town, I get crazy high readings -- like 180 bpm and I'm literally coasting downhill.
It's probably something to do with vibration upsetting the optical sensor or some kind of interference. I don't get the same kind of issue with my Wahoo Tickr chest strap. Also, I was getting crazy high rhythms before and it turned out to be in fact SVT ––*but you can feel the fluttering in the chest when that happens, at least I could. |
#12
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I have a wahoo tickr ,two actually
One of them I 'lost' and bought a replacement... then found the original The new replacement reads HIGH as soon as I put it on, then rolls back to normal after a minute or so... I've tried new battery, strap, etc... weird. |
#13
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Folks who get PVC [Premature Ventricular Contractions] will get top/max HRM reading when a PVC confused the HRM. Ask how I know.
I used to think I need a battery or the HRM was going bad. Thankfully the PVCs are benign...
__________________
This foot tastes terrible! |
#14
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A florescent light tube will light up if you hold it in the air under high-powered lines. Truly. It is so eery to see.
This came up in high school physics class and so my friends and I had to find out. Got a couple of lights and headed out in the county in the early evening to find a place to get close to the power lines, stood on top of the car, and voila. We were having a great time until the sheriff rolled up. In about two minutes he went from thinking we were doing some sort of bizarre Satanic ritual to thinking it was really cool. He got all excited and suddenly said "I know where you can get even closer to the lines. Follow me." Next thing we know we are chasing a sheriff at high speed through the countryside. Good times. He even ignored the beer cooler in the car. |
Tags |
920xt, bpm, garmin, heart rate monitor |
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