I was a very, very skinny model in the '60s, but naturally...that's what I looked like.. Twiggy explained. I ate. I always said I ate, and I looked like my dad who was very skinny, so I think that's genetic. I think most models fall into that category: if you are 17 years old and you are 5-foot-11, the chances are you're going to be thin.
URL of this page: //medlineplus.gov/ency/article/003929.htm. Electromyography (EMG) is a test that checks the health of the muscles and the nerves that control the muscles. The health care provider will insert a very thin needle electrode through the skin into the muscle. The electrode on the needle picks up the electrical activity given off by your muscles. This activity appears on a nearby monitor, and may be heard through a speaker.
An EMG is the summation of action potentials from the muscle fibers under the electrodes placed on the skin. The more muscles that fire, the greater the amount of action potentials recorded and the greater the EMG reading. EMG recording: The EMG is recorded by using a electrode placed on the muscle. The electrical activity measured by each muscle electrode and the ground electrode are sent to an amplifier. The amplifier eliminates random voltages caused by electrical noise by subtracting the signal from the ground electrode from the muscle electrode, producing the raw EMG.