Apple LC 550 Specifications download pdf (Page 13)

Musculoskeletal discomfort

As with any activity that involves sitting for long periods of time,

using a computer can make your muscles sore and stiff. To

minimize these effects, set up your work environment carefully,

using the guidelines that follow, and take frequent breaks to rest

tired muscles. To make working with your computer more

comfortable, allow enough space in your work area so that you

can change position frequently and maintain a relaxed posture.

Another type of musculoskeletal concern is repetitive stress

injuries (RSIs), also known as cumulative trauma disorders

(CTDs). These problems can occur when a certain muscle or

tendon is repeatedly overused and forced into an unnatural

position. The exact causes of RSIs are not totally understood, but

in addition to awkward posture, such factors as the amount of

repetition, the force used in the activity, the individual’s

physiology, workplace stress level, and lifestyle may affect the

likelihood of experiencing an RSI.

RSIs did not suddenly arise when computers were invented;

tennis elbow and writer’s cramp, for example, are two RSIs that

have been with us for a long time. Although less common than

other RSIs, one serious RSI discussed more often today is a wrist

problem called carpal tunnel syndrome, which may be aggravated

by improper use of computer keyboards. This nerve disorder

results from excessive pressure on the median nerve as it passes

through the wrist to the hand.

This section offers advice on setting up your work area to

enhance your comfort while you use your computer. Since the

effects of repetitive movements associated with using a computer

can be compounded by those of other work and leisure activities

to produce or aggravate physical problems, proper use of your

computer system must be considered as just one element of a

healthy lifestyle.

No one, of course, can guarantee that you won’t have problems

even when you follow the most expert advice on using computer

equipment. You should always check with a qualified health

specialist if muscle, joint, or eye problems occur.

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Apple LC 550 Specifications Page 13