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daily 07/23/2014

    • Electrode gel is essential when a doctor wants to apply electrodes to skin to read electrical impulses in the body. Whether you are interested in reading brain waves in an electroencephalogram-based study, or you want to record a prenatal electrocardiogram, electrode gel is vital. Without it, electrical impulses in the body cannot be recorded clearly. It is easy and cheap to make your own electrode gel. It is also a good idea to know how to make your own if you ever run out and you need a substitute in a hurry.
    • When nurses attached the EKG leads, they clean the skin first.  That 
      works for HRM straps also.  My procedure is to wet my fingers, rub the 
      skin under the strap area.  I do this twice on each side.  In addition 
      to providing moisture to increase conductivity, this helps loosen and 
      move away any insulating dead skin cells.
    • The root of all issues:
       
      So assuming that you’ve got it all correctly ‘installed’, let’s look at what typically causes the spike in HR (if it’s over 200bpm, it’s likely not legit unless you’re a seven year old).
    • 1) No moisture, dry air: During the winter months the air is often fairly cold, and fairly dry.  This means that you’re less likely to have moist skin (due to even just skin perspiration), and even less likely to be generating any sweat right from the start of the workout.  This in turns lowers your conductivity ability from a readings perspective.  Which, means you often get incorrect readings.  Simply introducing any moisture at all will usually remedy the situation – at least until you begin sweating enough to let that do its job.  We’ll talk about moisture additives in the next section.
    • 2) Synthetic shirts (quick dry/tech shirts): While all of us love not being suffocated in cotton shirts, an unfortunate side effect is that those synthetic shirts (normally called quick dry or ‘tech’ shirts) produce additional static electricity buildup that messes with the readings.  This is most common when your skin and air are both rather dry, and very little moisture is present.  In almost all cases, simply applying moisture will immediately resolve this issue.  You can try rubbing the strap or your shirt with an antistatic agent – the ANT+ folks recommend simply a bounce dryer sheet, as that can help in some cases.  As a side note, some of the Polar straps actually have an antistatic component built into them that helps to alleviate this problem to some degree.
    • 2) Licking it: This is the simplest option – and quite honestly what I do 99% of the time.  I just give it a big lick.  By ‘it’, I mean the two sensor pads on the back of the strap.  This will usually ‘tide me over’ until I start sweating enough to keep everything all happy.  And don’t worry folks – a HUGE LONG thread on BT the other day confirms that everyone else does it too.  See, here’s my lick-job:
    • 3) Heart Rate Gel: If you suck at licking, then you can instead use electrode gel to improve conductivity.  This is what’s typically used in medical situations such as an EKG where you’re trying to get a better reading/conductivity.  I actually use the gel mostly during the winter because I’ve found that many times on easy runs I’ll never actually produce a sweat due to the cold, and thus after a short bit of time my lick-job (as noted above), will actually vaporize.  The HR gel is designed to last considerably longer on your skin/strap. This stuff is incredibly cheap, and the bottle will last you a long long time.  Here’s my bottle I bought two winters ago:
    • Some folks even wear it on their back with great success.  In fact, when I’m having a day with lots of issues descending on the bike and the HR being erratic – I’ll simply slide the strap around my side a bit, so the contact portions of the strap kinda straddle my chest and back.  Works perfectly!
    • After reading a comment, I threw the strap in the washing machine ( I have to say that I religiously kept the strap clean and followed Polar’s instructions when i was frequently using it- wash it with water and soap after every use and every 5 uses throw it in the washing machine).
    • I think it feels more serious. One of the watchwords we have this year is there are consequences for choosing to live like this. It’s not a fairytale. If you have people back home, if you run away it’s going to have an effect on them. And it’s not necessarily always going to be lovely. And does the Doctor make you better?

      We want to make it feel that these adventures can hurt…

    • He’s not as immediately approachable and he’s not necessarily looking for your approval. I would like to restore the sense that when he says ‘Wait here, I’ll be back’ you really hope he’ll be back, but you’re not absolutely convinced… What he’s not doing is reassuring you very much.
    • … From a Doctor she could sort of control, because he had a crush on her, she’s landed with a Doctor who barely registers that she’s a girl. They’re great friends and all that but she has to be his human interface with everybody else.
    • Boyega’s character is a Stormtrooper who switches sides, which Badass Digest’s Devin Faraci says is “the single most confirmed piece of news I’ve ever written about in terms of sheer volume of independent sources who agree.”
    • Bryce Hager on Petty’s flaws:

       

      “What are Bryce Petty’s flaws? His hair. Coach Briles wants him to grow his hair out and grow his beard out, but he likes to be more clean cut, and Coach Briles doesn’t like that.”

    • When you’re coaching a game on the sideline, he explained, a staffer will occasionally bring cups of water to you. But behind the bench, there are multiple jugs of flavored sports drink.
    • So really, it’s that simple. TCU’s head football coach was tired of drinking plain water, and he figured the best way to ensure he’d have time to switch to Gatorade — red or otherwise — was to adopt an offensive scheme that would enable his team to score more points.
    • Cedric Reed on changing from back to a normal facemask:

       

      “I don’t know if it’s a rule or not. I walked in there and (the equipment staff) was like, ‘Oh, we’ve got to change your face mask. That’s all they told me. I was pretty sad about it, but at the same time that facemask was heavy. It was real heavy. … It was definitely noticeable.”

    • “When you play Madden with him now you have to be careful which teams you take, because he will know what your game plans were in the past when you’ve played with him and he’ll pick the opposing team knowing what plays you want to run,” says Weems, now an assistant basketball coach at Oakland University.
    • At a young age, Gates was already an autodidact, someone compelled to learn for himself what he needed to know.
    • In a paper published in Educational Psychologist last year, Jeroen J.G. van Merriënboer of Maastricht University and Paul A. Kirschner of the Open University of the Netherlands challenge the popular assumption “that it is the learner who knows best and that she or he should be the controlling force in her or his learning.”
    • 1. Gazans have no government to protect them.
    • The only way to make sense of Hamas’ behavior is to recognize that its goal is not to stop the killing but to exploit it.
    • Hamas thinks a cease-fire is a favor to Israel.
    • The absence of a protector in Gaza has worsened Israel’s behavior. Israel knows from experience that invading and occupying Gaza is bad for Israel
    • Israeli hawks are talking about recapturing the Gaza-Egypt border. There’s always another mission you can add to make Gaza “safer.”
    • The popularity started when research began to uncover that a blend of carbohydrates and protein, in a ratio of four grams of carbohydrate to one gram of protein, was effective in promoting muscle recovery following endurance exercise. (For a more in-depth look at the ins and outs of recovery, read this.)
    • As we discussed in previous Fuel School sessions, when planning recovery meals and snacks, you want to meet one of the two following criteria: 0.5 grams of carbs per pound of body weight plus a sampling of protein OR simply a snack or meal providing 15 to 25 grams of protein, regardless of the amount of carbs.
    • You may be wondering, “What happened to the 4:1 ratio of carbs to protein that was once so widely touted?” Well, as research continues, it looks like if enough protein is consumed, the ratio is not as critical and can be relaxed slightly. For optimal recovery, aim for a ratio somewhere between 2:1 and 4:1 if you’re into counting grams of carbs and protein.
  • Quandre Diggs, on getting older and wiser: “I’ve matured. I’ve matured as a trash talker.”

Posted from Diigo. The rest of my favorite links are here.

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