NEC POWERMATE VT 300 RELEASE NOTES, Руководство пользователя

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Setting Up a Healthy Work Environment A-3
Although some studies have shown an association between
increasing hours of keyboard use and the development of
some musculoskeletal disorders, it is still unclear whether
working at a computer causes such disorders. Some doctors
believe that using the keyboard and mouse may aggravate
existing musculoskeletal disorders.
Some people are more susceptible to developing these
disorders due to preexisting conditions or psychosocial
factors (see “Preexisting Conditions and Psychosocial
Factors” later in the appendix).
To reduce your risk of developing these disorders, follow the
instructions in this appendix. If you experience discomfort
while working at your computer or afterwards, even at night,
contact a doctor as soon as possible. Signs of discomfort
might include pain, tenderness, swelling, burning, cramping,
stiffness, throbbing, weakness, soreness, tingling and/or
numbness in the hands, wrists, arms, shoulders, neck, back,
and/or legs.