Учебное пособие по развитию навыков устной речи и чтения для студентов 1 курса технических специальностей

What is RSI?

As more and more work, education and recreation involves computers, everyone needs to be aware of the hazard of Repetitive Strain Injury to the hands and arms resulting from the use of computer keyboards and mice. This can be a serious and very painful condition that is far easier to prevent than to cure once contracted, and can occur even in young physically fit individuals. It is not uncommon for people to have to leave computer-dependent careers as a result, or even to be disabled and unable to perform tasks such as driving or dressing themselves.

Repetitive Strain Injuries occur from repeated physical movements doing damage to tendons, nerves, muscles, and other soft body tissues. The rise of computer use and flat, light-touch keyboards that permit high speed typing have resulted in an epidemic of injuries of hands, arms, and shoulders. Use of pointing devices like mice and trackballs are as much a cause. Lack of adequate rest and breaks and using excessive force almost guarantee trouble.

The symptoms of RSI include: tightness, discomfort, soreness or burning in the hands, wrists, fingers, forearms, or elbows; tingling, coldness, or numbness in the hands; clumsiness or loss of strength and coordination in the hands; pain in the upper back, shoulders, or neck associated with using the computer.

Fortunately, there are some easy rules to reduce the risk of developing RSI.

1. 
   TAKE BREAKS when using your computer. Every hour or so, get up and walk around, get a drink of water, stretch whatever muscles are tight, and look out the window at a far off object (to rest your eyes).
   
2. 
   Use good posture.
   
3. 
   Use an ergonomically optimized workstation to reduce strain on your body.
   
4. 
   Exercise regularly. Include strengthening, stretching, and aerobic exercises.
   
5. 
   Only use the computer as much as you have to. Think before you type to avoid unnecessary editing.
   
6. 
   Let your hands float above the keyboard when you type, and move your entire arm when moving your mouse or typing hard-to-reach keys, keeping the wrist joint straight at all times.
   
7. 
   Use two hands to type combination key strokes, such as those involving the SHIFT and CONTROL keys.
   
8. 
   When writing, avoid gripping the writing utensil tightly.
   
9. 
   Realize that you are not invincible. RSI can happen to you. Don't be afraid to ask for help.