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Old 04-18-07, 09:22 PM   #1
CrossChain
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A Good HRM Skin Conductor Besides Spit ??

On cool mornings it takes me a few miles to build up enough sweat to begin getting a reliable reading from my HRM. Aside from blowing a loogie down the inside of my jersey, what home style substance would work? The idea of buying a tube of some official substance doesn't appeal to me. Suggestions?
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Old 04-18-07, 09:22 PM   #2
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Wet rag?
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Old 04-18-07, 09:52 PM   #3
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Wet rag?
Thanks for the suggestion, DG, but my students already accuse me of raggin' on them constantly.
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Old 04-19-07, 12:43 AM   #4
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I use water.... abundant, non toxic and cheap.
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Old 04-19-07, 01:02 AM   #5
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Tap or bottled, Dogbait?
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Old 04-19-07, 01:15 AM   #6
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From the tap but I run it through a Brita filter to remove the big chunks... what is that stuff?
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Old 04-19-07, 01:34 AM   #7
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Those are salmon that inhabit Oregon tap water this time of year...
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Old 04-19-07, 05:18 AM   #8
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How about some "Buh Bump Cream?" I've seen this stuff but have no experience with it:

http://www.heartratemonitorsusa.com/...ectra-gel.html
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Old 04-19-07, 05:26 AM   #9
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I also just wet my strap wth water before I put it on.
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Old 04-19-07, 06:08 AM   #10
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You got something against spit?

Quote:
http://www.aeron.com/volume_2_number_1.htm

The Saliva Story - Part 1

Spit is not something most of us like to think about. It has all kinds of negative connotations and cultural associations. Little boys growing up often consider spitting a manly thing to do. Little girls on the other hand are taught that it is unladylike to spit. Spittoons have been commonplace throughout history, but once it was discovered that saliva could carry germs these receptacles quickly fell out of favor. And then there are those ghastly spit balls most of us are introduced to in grade school. Not a pleasant thought. Yet, in spite of what we think about spit, from the time we are born, whether it is the drool on our chin that signals the onset of teething, or the sticky sweet slime that remains on our lips and fingertips after licking an ice cream cone - spit is a presence in our lives. And, as you are about to discover, spit, or saliva, as it is more scientifically known, is a very important bodily fluid.

<snip>

The chief functions of saliva, which is mostly water, are lubrication and initiation of digestion. The enzyme amylase, present in saliva, helps begin the breakdown of starches. However, highly complex in both composition and function, saliva does indeed do more than moisten our food and make it easier to swallow. In addition to important enzymes, saliva contains hundreds of other substances - minerals, proteins, hormones, blood cells, and bacteria, to name a few — that form an elaborate protective mechanism for tooth enamel and the oral cavity. The discovery of the immunoglobulin IgA in saliva demonstrated that, along with its role in digestion and oral health, saliva is also active in immune function, helping protect us from foreign invaders. IgA is an important antibody that protects your eyes, nose, throat, intestines, and lungs from infectious diseases.

In addition to being antibacterial, saliva has been shown to be antifungal, antichlamydial and antiviral. Some scientists refer to saliva as a gatekeeper because of its protective role against harmful pathogens and dental caries. But scientific research is showing us that saliva may also be a gateway to simpler, more noninvasive answers to some of our most challenging medical dilemmas.
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Old 04-19-07, 06:14 AM   #11
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I use a small plastic bottle of liquid KY Jelly and store it with my strap.....works great.
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Old 04-19-07, 07:49 AM   #12
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Just a small amount of water will work. Once the strap is compressed against your chest, moisture won't easily evaporate. Also, check alignment and tightness. I've found that my Garmin 305 chest strap works a lot better than the Polar straps I've used.
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Old 04-19-07, 08:03 AM   #13
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Quote:
Originally Posted by Terex
Just a small amount of water will work. Once the strap is compressed against your chest, moisture won't easily evaporate. Also, check alignment and tightness. I've found that my Garmin 305 chest strap works a lot better than the Polar straps I've used.
+1 on the Polar straps. They stretch, they don't hold their tightness no matter how much I grumble and tug on them. And they're fairly new, replaced by Polar. They aren't worth......spit!

jppe.......is that the "warming" variety of KY favored, according to the commercial, by women riders? If my riding friends saw me whip out a tube of that stuff I'm not sure what they might think. Technically, sounds like a good idea.
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Old 04-19-07, 08:17 AM   #14
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I read this in hopes of finding a substitute for spit. Sounds like spit is readily available, works, and no extra container needed........and multi colors if you like Life Savers.
I'll stick with spit....
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Old 04-19-07, 08:40 AM   #15
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Quote:
Originally Posted by Thrifty1
I read this in hopes of finding a substitute for spit. Sounds like spit is readily available, works, and no extra container needed........and multi colors if you like Life Savers.
I'll stick with spit....
There is not substitute for spit. Just ask any mother with a dirty faced kid and no water readily available
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Old 04-19-07, 09:15 AM   #16
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Quote:
Originally Posted by CrossChain
The idea of buying a tube of some official substance doesn't appeal to me. Suggestions?
My wife, the physical therapist, uses HRM's at the rehab hospital all the time. They just run the sections of the strap with the sensors under the faucet tap for a few seconds then the patients strap them on. When I was having trouble getting readings from mine, she told me to dampen the sensors.

Works fine for me at home on my Polar HRM strap. I get more variation from the device itself than from the sensing portion - sometimes have to turn it on, off & back on again to get it to calibrate properly (i.e. my pulse is NOT 176 standing in my kitchen before getting on the biked!)

Why on earth would you need some 'official substance'? I know some 'official substances' are legal in California but this is NOT the application for which you can get that prescription...
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Old 04-19-07, 10:33 AM   #17
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? Mix some salt with KY jelly?
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Old 04-19-07, 10:40 AM   #18
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I also have trouble with this riding in Colorado because it is so dry here and the water evaporates pretty quickly. It takes a while to build up adequate sweat to make the HRM work reliably. I also have a lot of chest hair which hampers things as well. Has any one shaved (or waxed!) their chest area and found this to help?
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Old 04-19-07, 11:09 AM   #19
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Having worked as a EMT many years ago if water doesn't cut it you can buy electrode conductive gel on-line and certainly if you have a hairy chest shaving will help. I do have a hairy chest but I sweat a lot and my sweat has high salt content so just using water works fine or me. For other try:

http://www.vitalityweb.com/backstore/electrode-gel.htm

Google is a wonderful thing
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Old 04-19-07, 11:18 AM   #20
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There are the special gels that cost a bomb and you can never find the tube just before a ride but Vaseline works just as well. I find that after 5 miles though the vaseline is very runny so only use spit or sweat nowadays. OR Rain works just aswell- and Urine, so I have been told, due to the salt content but I am sure there must be others.
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Old 04-19-07, 11:57 AM   #21
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Quote:
Originally Posted by CrossChain
Aside from blowing a loogie down the inside of my jersey, what home style substance would work?
I just use good old water.

Steve
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Old 04-19-07, 12:42 PM   #22
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How old is the water you use, CF?

Just askin' ...
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Old 04-19-07, 12:54 PM   #23
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Quote:
Originally Posted by Big Paulie
How old is the water you use, CF?

Just askin' ...
It is my understanding that almost all water is several billion years old, or something like that. I suppose some folks make some "new water" through chemical reactions, but that is very little.
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Old 04-19-07, 01:28 PM   #24
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Quote:
Originally Posted by Big Paulie
How old is the water you use, CF?

Just askin' ...
LOL! I'm slow today. Took me a while to get that.

Good one, BP!

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Old 04-19-07, 01:36 PM   #25
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For some reason, on my new Polar sensor water just sheets off when I try to dampen it, leading to erratic readings the first 10 minutes--but I solved the problem by putting a little water on my skin instead of on the sensor. End of problems.
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