Experts say that the use of contact surfaces in the vertical position is very risky ergonomic

According to Microsoft, the great leap forward about Windows 8 is its ability to be used with a touch screen. When Windows 7 might be tight on touch devices, the target on the screen is too small. With Windows 8, which has large "tiles" to suck.

But research to be published soon suggests that users of laptops with touch screen may be at risk of developing health problems such as hybrid devices can cause stress on the shoulder.

While the rise of tablets and smartphones means that touch screens have become almost everywhere, it is only recently appeared in laptops where the screen is typically used in an elevated position beyond arm's length. But take off rapidly in the United States, the touch screen models represent a quarter of the sales of Windows 8 laptops today, said the NDP, and Windows 8 Leader Julie Larson-Green said he s' expected that almost all laptops with touch screens soon

However, this is not the first time that vendors have marketed vertical touchscreens. In 1983, HP launched the Office 150 touch screen, and said he expected to get up to 22% of the U.S. PC market with the machine. He did - in part perhaps because it was ahead of its time, but also because customers complained that it was painful to use

Indeed, according to many experts, the use of an ergonomic vertical touch screen is very risky. Laptops with touch screen relatively new, most research focuses desktops. But while the problems with laptops may not be so extreme that still apply.

fact, Steve Jobs of Apple - not usually one to dismiss a cool gadget because of futility - once said he has never run a laptop touch screen that he calls "the arm of the gorilla"

"We did a lot of user testing on this," he said in 2010, "and it does not work. Contact surfaces not want to be vertical. It gives a great show, but after a short period of time that begins to fatigue, and after a long period of time, his arm wants to fall. "

Studies have shown that users of touchscreens Office reported a "significant increase in discomfort in the shoulder, neck and fingers., And the electrical signals shoulder muscles have the same story

"We conclude that the more frequent use of hands and fingers on the arm without support - were out of the chair armrest - arms outstretched and postures that were necessary touch screen gestures can be main cause of his biggest surprise of the body, "says Shin Gwanseob National Urban Institute of Science and Technology of Korea.

"To minimize the scope and promote comfortable shoulder and arm postures, try the following: put the keyboard and mouse or trackball at the same height, which should be at arm height elbow should fall relaxed. sides "bed.


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