"Over the years, I've written several columns about ergonomics, but many of those early pieces predated smartphones and even laptops, focusing largely on how to set up a desk and chair to minimize injury or strain when using a desktop computer. I still use a desktop, along with a laptop, tablet and phone, but today most people do the bulk of their "computing" on portable or even handheld devices."
"The federal Occupational Safety and Health Administration (OSHA) has a Computer Workstations eTool that recommends proper height for chairs, monitors and keyboards, including setting "the chair height and work surface height to maintain a neutral body posture." OSHA recommends "elbows should be about the same height as the keyboard and hang comfortably to the side of the body. Shoulders should be relaxed, and wrists should not bend up or down or to either side during keyboard use.""
Early ergonomics guidance focused on desktop setups before smartphones and laptops became common. Most people now perform the bulk of computing on portable or handheld devices, so device use away from desks requires attention. Computers should be positioned at the right height with a desk chair that encourages good posture while using a keyboard. OSHA recommends setting chair and work surface heights to maintain a neutral posture, with elbows near keyboard height, relaxed shoulders, and wrists not bent during keyboard use. Poor keyboard height forces awkward positions; adjusting chair and desk height reduces strain. Keep monitors centered to avoid neck twisting and watch for squinting as a sign of small text.
Read at The Mercury News
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