Heart Rate Monitors

[old] Rogus · Post by **[old] Rogus** » May 31st, 2004, 7:42 pm

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td class='genmed'>QUOTE (GeorgeD @ May 31 2004, 03:17 PM)</td></tr><tr><td class='quote'> (speaking of which time for more food)  </td></tr></table> That's a good way to maintain your LW status!

[old] John Rupp · Post by **[old] John Rupp** » May 31st, 2004, 8:37 pm

As Rogus said, I loop the wrist receiver around and over the middle of the handle, duct taped over the top of a rounded piece of pipe insulation. It only takes a minute to do this. Then I record the heart rates on a steno pad by the erg, at the end of each repetition. Very easy. I have the simplest HRM, with the biggest display, accurate, and very easy to read. This gives me everything I would want in a heart rate monitor. Oh yes, it was $49.

[old] John Rupp · Post by **[old] John Rupp** » May 31st, 2004, 8:41 pm

By the way, the higher the price, the smaller the HR display tends to be.

[old] John Rupp · Post by **[old] John Rupp** » June 1st, 2004, 1:02 am

<table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td class='genmed'>QUOTE </td></tr><tr><td class='quote'>John, All my workouts are planned for certain HR zones and I use the monitor to stay within them. Is that what you're asking?  </td></tr></table> Rogus, Yes, that is what I am asking.

[old] Cran · Post by **[old] Cran** » June 1st, 2004, 6:53 am

if you get a watch that can download the data afterwards you don't need to see the watch display while you are training, and you can set audio alarms to tell you if your hr is too high/low. The C2 monitor will display the hr for you anyway, and with the watch you can dl the data and print graphs and stuff afterwards. fwiw I have a cardiosport, it was 1/2 the price of the equivalent polar, and it works fine with the C2 interface. and the chest belt is more comfortable

[old] eurofoot13 · Post by **[old] eurofoot13** » June 1st, 2004, 5:10 pm

I like duct tape. I tape the wristband to the monitor when I work out. It seems to work ok for me. It'd be nice if I could afford my own erg, so I could set up the HR function, but I don't really need it.

[old] John Rupp · Post by **[old] John Rupp** » June 9th, 2004, 3:21 pm

The plastic adjustment for the regular chest strap caused a slight niggle in my back since wearing it 11 days ago. So I cut the strap off and slipped a regular piece of elastic though, around, and out the end pieces of the monitor, then looped back through and out the same way it came in. Viola! This holds the new, more forgiving, strap firmly in place, and there's no more plastic piece in the back.

[old] drkcgoh · Post by **[old] drkcgoh** » June 19th, 2004, 3:20 pm

There is a danger from pushing the intensity of exercise too high, and this can be detected on the download models of the Polar HR monitors such as the pricey top-of-the-range S810. Recently I have found spikes of up to 200 bpm while race-walking after a warmup period of 5 min, then racing repeat 0.92Km loops. After half an hour, the HR stabilizes around 154 for the next half hour, even while racing at a faster pace, and without drinking any water. This phenomenon cannot be picked up even while glancing at the monitor during the race, but is glaringly seen on the download chart. I have not seen it happen even when doing repeat 1:40 to 0:20 second hard intervals of 20 sets on the erg. Apparently rowing is a safer mode of exercise than race walking. This might be arrhythmia, the most serious of which is the fatal ventricular fibrillation. I don't think this is an artifact caused by wearing a loose belt, but it is sufficiently alarming to alert me to the dangers of overtraining and just "listening to the body". I don't know how to insert the jpg file I have saved this interesting download file on. KC62

[old] John Rupp · Post by **[old] John Rupp** » June 19th, 2004, 4:27 pm

KC, The .jpg needs to first be on a server or attached to a web page. Then you can post it like this: <img src="http://www.hereisthepicture.jpg"> Rather than heart rate spikes or arrhythmias, your monitor might have been picking up microwaves or transmissions from high voltage lines.

[old] eurofoot13 · Post by **[old] eurofoot13** » June 19th, 2004, 4:48 pm

yeah, that happens to me all the time while riding - especially on one certain route - my HR will be crusing along at 140/150 and then all of sudden it jumps to 216/220. It seemed really weird seeinag as I didn't feel like I had a pulse that high, but outside influence seems the most likely cause

[old] drkcgoh · Post by **[old] drkcgoh** » June 19th, 2004, 11:59 pm

I haven't tried pasting the jpg field to a website yet, but i have gone thru the past few HRM downloads. The racewalk on a 0.92Km circuit had no visible high power cables nearby. The 190bpm spikes were found during the 2nd to the 5th round, when the av HR was around 140. But after the 5th round, when the speed increased the HR av went up to 150, but there were no more spikes. even though it was exactly the same circuit with the same overhead wires around. The other time this happened was along the crest of a 750m dam where there were no high power cables either. The spikes happened only when racing at top speed after a good warmup. Conversely, hard rowing on Wolverine level 4 this morning for 40 miin did not produce a single spike in spite of the av HR reaching 154. There were wires everywhere near the computer, but of course this was only household voltage of 240 volts here. I am sure slower jogging & lower intensity training will condition the heart back into not showing any more spikes. This has happened before. The OwnIndex (or rough measure of VO2max using heart rate variability) has improved from 46 to 49 in the past week. KC62

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