epiphiny43
Posts: 688
Joined: 10/20/2006 Status: offline
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Despite the usual uneducated warnings of dire outcomes with TENS units, the total death count for the planet seems to be . . . zero. I invite the usual Google check for an actual data by a responsible source. The FDA and OSHA don't even have a category for injuries from TENS. (World famous NYC heart surgeons didn't even know a TENS was reputed to be dangerous. NO experience in their practice of any issues.) The actual warnings are to Not connect the device to or near a pacemaker wire that penetrates the chest to the heart nerve center that controls the heart contractions. (Duh!) As a TENS at max output is abut the same current a pacemaker or Also it is recommended not to place the electrodes over the Carotid arteries (one on each side of the neck, feeding the brain.) as muscle spasms in the artery Could lower blood flow to the brain enough for unconsciousness to result. And a general caution on placing electrodes on the temples, 'just because'. That's IT. The safety of the device seems proven by the total lack of 'bad outcomes' with MILLIONS of uses every day for generations now, placed about every conceivable place on the body. That so many will believe warnings with no basis in physiology or electrical current behavior is just one more indictment of either the US educational system or the general distaste for research and understanding. If it will cause major muscle contractions or spasms, it isn't a TENS unit, it is an electro stim designed for the purpose and considerably different current output. Curious people should research the NUMBERS of the voltages and amps delivered by the different electrical devices and then learn what those terms and numbers mean when applied to human bodies. I've never seen a TENS that didn't have a 'volume' control and I've never seen anyone who couldn't start at the low end and after awhile slowly turn the dial to max with no discomfort. Nerve accommodation to any constant stimulus is universal and the max TENS output is far below what normal nerves can get used to in a short time. Too short, for many electro-players and therapy uses? The biggest issue with TENS sensations is that many people have emotional barriers about shocks and aren't even close to being in present time when experiencing them. The solution is to start at the low end of the dial and work to a minimally sensible sensation, let the nerves accommodate to that so it becomes imperceptible and slowly increase the power again to just sensible. This process gets Boring and the reactions in terms of past experience fade and the actual sensation becomes accessible. Which is not to say it will be enjoyable. Each of us reacts individually to many sensations. TENS stim can be unpleasant or boring most places but erotic at one or a few primary or secondary sexual areas. What works for one person may be quite distasteful or 'meh' to others. Just Like All Toys. Some find it interesting erotic torture even if not liked. YMMV. Heart defibrillators which actually do deliver significant current to the heart to affect heart contractions or rhythms start off over 1000 times as strong as a maxed out TENS unit and don't have short wave pules, but a far longer continuous current (Second or more) to enable the current to penetrate the chest wall and actually affect the heart nerves. These often produce skin burns if the current has to go to max to stun the heart nerves to reset the heart rhythms. Normally a modern 'intelligent' defib starts the first pulse much lower, the second about the middle of it's range and only maxes out if the heart is still beating in a disorganized manner. A pacemaker uses similar current (~ 100milliamps, or .1 Amp) to a TENS but has a wire delivering the power directly to the nerve center of the heart, the TENS current from the skin has only a minuscule fraction of it's power reach anywhere near the heart and is a very interrupted current, a totally different delivery profile than defibrillators. If you don't like a TENS, Don't play with one! But telling people they are dangerous is simply wrong. At some point lack of evidence for risk is evidence there is no risk. This happened decades ago with TENS units. You don't even have to know much about electricity to figure a small 9 volt battery can't really do much to you at a continuous output.
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