(2017-01-30, 7:41 pm)andrewkun Wrote: I've had a few friends all messed up from RSI injuries so I guess a bit wary of these things.
FWIW, my anti-RSI regimen accumulated from various readings and experiences is,
- Take glucosamine-chondroitin supplements regularly (I don't know for sure that they help with RSI, but they noticeably reduce the frequency with which my wrists and ankles make crackling sounds when I stretch and generally make those joints move more freely and comfortably. I just assume healthier joints are less prone to RSI.)
- Stretch regularly when doing repetitive hand work, trying to stretch all the involved muscles from the back to the fingertips; stretch early and often, whenever movements feel stiff or tight and long before they actually hurt. Also trying not to overstretch -- there were studies showing that runners overstretching made the muscles more fragile and prone to injury. RSI is not really muscle damage and fine repeat movements are very different from athletics, but still... I have no need to move my wrists or fingers to any terribly abnormal angles so there's no reason not to be moderate just in case. (Well, my flute playing hobby does involve a certain amount of unnatural positioning of some of the fingers, but beyond that.)
- Use arm movement in preference to wrist movement when manipulating the mouse (or anything else, like writing with a pen or cutting with a knife). It turns out you'll actually have better handwriting, finer FPS aiming skills, etc. if you hold your wrist stable and use your other muscles to control your handheld tools while reducing the wear and tear on your wrist. It's also actually quite natural, the trick is not to think "I'm going to use arm muscles" but just to think "I'm going to keep my wrist stable". You already use arm muscles for fine fingertip positioning you just don't think about it when doing it so just keep not thinking about it.
- Avoid resting the palms when typing. The biggest aid in this is keeping the keyboard low enough that this isn't tempting. (Not doing so good on this one right now, since the taller chair makes my back hurt and the desk is high with no keyboard tray. I should probably do something about that. It's not constant but I do sometimes rest my palms in a way that I know is bad.)
Anyway, while I still sometimes got muscle aches from overdoing it, it's been years since I've felt that pain down the center of the forearm near the wrist that forewarns of carpal tunnel so I guess I'm doing okay.
Variety probably helps too, to some extent, as long as the variety doesn't include any really bad habits (ie. palms on desk and crooked fingers clawing the keyboard or a deathgrip on the mouse while using tiny wrist movements to move it.) I wouldn't count on a new keyboard to work any great magic, but it's certainly true that with a keyboard in your lap you're unlikely to rest your palms. You can do that with an ordinary keyboard as long as the cord is long enough though.
Edited: 2017-01-30, 9:36 pm