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172 ï HP Jornada 680/680e Users Guide
What causes RSI?
RSI is caused by certain demanding activities that exceed the
bodys ability. Common factors associated with RSI include
too many uninterrupted repetitions of an activity or motion,
performing an activity in an awkward or unnatural posture,
maintaining static posture for prolonged periods, failing to
take frequent short breaks, and stress. Certain medical
conditions, such as rheumatoid arthritis and diabetes, may
contribute to RSI.
RSI symptoms
By following the guidelines on proper setup and use of
equipment and work environment, the risk of developing RSI
can be minimized. However, if you experience any discom-
fort, seek professional advice immediately. Typically, the
earlier a problem is diagnosed and treated, the easier it may
be to resolve.
Avoiding RSI
Recent literature suggests that there may be a relationship
between injury to soft tissues, especially in the hands and
arms, and the prolonged use of keyboards or other equipment
requiring repeated motion of the hands and forearms. Litera-
ture also suggests that there are many other risk factors
that may increase the chances of such soft-tissue injury. You
can minimize the risk of suffering from RSI by following the
guidelines detailed in this chapter.
Setting up your working environment
You must have enough space to move around and vary your
position. To avoid eye strain, the ceiling, walls, and floors
should have a medium level of reflectance (approximately
75 percent of ceiling reflectance, 40 percent of wall reflec-
tance, and 30 percent of floor reflectance). Try to avoid
excessive contrast between the screen and its surround-
ings. The work environment should be as quiet and distrac-