User`s manual

If you use wrist rests and arm supports (including the arm rest of the

chair), choose and/or adjust them carefully to facilitate natural

(straight) wrist/arm posture, and to allow the upper arm to fall relaxed

from the shoulder when you are seated properly.

Ø Always let your upper arms fall relaxed from your

shoulders, and keep your forearms parallel to the floor (or

with your fingertips about 1 & 1/2 inches above the parallel,

at most).

Ø Key as gently (with as little force) as possible. Note that any

key you press will register on the screen early in the

keystroke. You will require less energy if you press just until

the image appears on the screen, and you will reduce fatigue

in the hands, wrists and arms.

Ø Take a rest break whenever you can. An informal rest break

may consist of a brief pause to stretch, getting up to do an

errand, or alternating keying with non-keying task. Formal

rest breaks should include getting up and moving around, to

help increase blood flow to all parts of the body.

BAD WRIST AND ARM POSTURES

v Upper arms angled forward or outward away from the

body, instead of falling relaxed from the shoulder.

v Forearms not horizontal. Hands should be neither below,

nor more than 1 & 1/2 inch above the level of the elbow.

v Anything that causes the wrists to be angles to any

direction.