1 -Computer Ergonomics

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Introduction to Information Technology Class


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Definition of ErgonomicsErgonomics derives from two Greek words:

ergon, meaning work, and nomoi, meaning

natural laws, to create a word that means thescience of work and a persons relationship to that

work.

http://ergonomics.about.com/od/ergonomicbasics/a/ergo101.html


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Ergonomics is the science of making things comfy. It alsomakes things efficient. And when you think about it, comfy

just another way of making things efficient. However forsimplicity, ergonomics makes things comfortable andefficient.

At its simplest definition ergonomics literally means thescience of work. So ergonomists, i.e. the practitioners ofergonomics, study work, how work is done and how to

work better. It is the attempt to make work better that ergonomics

becomes so useful. And that is also where making thingscomfortable and efficient comes into play.

Ergonomics is commonly thought of in terms of products.But it can be equally useful in the design of services orprocesses.


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How you sit at the computer

How you sit at the computer is very important to yourhealth. People who do not sit properly or hold theirhands properly while working at a computer can get

repetitive stress injuries such as carpal tunnel.


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Correct Sitting Position

www.ergonomicsolutions.com


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Correct Sitting Position (Contd)

Sit up straight

Lower back should fitsnuggly against the

backrest of your chair.If it doesnt, use a smallpillow or rolled-uptowel for support.


Lower back fits

snug against

backrest of chair


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Chair should be at thecorrect height so yourfeet are flat on the

floor and legs are bentat a 90-110 angle. Ifthis is not possible, usea footrest such as a

three-ring binder.

www.ergonomicsolutions.comLegs bent at 90-

110 angle


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Monitor should bedirectly in front of yourbody and the

keyboard. It should notbe off to the side.

When you lookstraight ahead, you

should be looking atthe top of the monitor.


Looking straight

ahead at the top ofthe monitor


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Correct Sitting Position (Contd) Keyboard should be as

low as possible, yetallowing your wrists tobe straight.

Sit about a hand-widthaway from thekeyboard.

Mouse should bedirectly to the side ofthe keyboard.


Not hereMouse goes here


10/24http://www.kfupm.edu.sa/medicalcenter/SAFETY%20IN%20COMPUTER%20USE.pps
http://www.kfupm.edu.sa/medicalcenter/SAFETY%20IN%20COMPUTER%20USE.ppshttp://www.kfupm.edu.sa/medicalcenter/SAFETY%20IN%20COMPUTER%20USE.pps


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Hand and Wrist Positioning Fingers on home row. Fingers curved and on

top of keys. Palms slightly up off

the keyboard andwrists straight. Onlyyour fingertips shouldbe touching the

keyboard. Elbows relaxed and in

to side. Palms and wrists doNOT touch the

keyboard or table.


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Avoid Eye StrainAvoid glare on your screen from windows and bright

lights.

Adjust screens contrast and brightness to reduce eyestrain.


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Avoid Eye Strain (Contd) Blink frequently to keep eyes moist.

Look far away from your screen every five minutes.

Take a thirty-second to one-minute break and walkaway from your computer every half-hour.


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Ergonomic ExercisesThe following slides show ergonomic exercises you cando if you work at the computer for long periods of time.Do these exercises every 30 minutes.


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Hand Stretch Spread your fingers until you feel the stretch. Hold for

5 seconds, relax, then bend for 5 seconds


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Shoulder RollsWith your arms by your side, move your shoulders in a

forward circle 3 times and then repeat goingbackwards 3 times.

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Neck Stretches Sit up straight and look down, touching your chin to

your chest. Hold for 2 seconds. Now look up at theceiling and hold for 2 seconds. Bring your head backupright and turn your head to the left, looking overyour shoulder and hold for 2 seconds. Repeat on rightside. Repeat 5 times.


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Blade Squeeze Clasp your hands behind your head, and pull your

shoulder blades in until you feel the stretch. Hold for 5 10 seconds, then relax.


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Reach for the Sky Raise one arm toward the ceiling and stretch as far as

you can. Hold for 2 seconds. Now do the other arm.Repeat 5 times.

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Back Stretch Sit up straight in your chair and put your hands behind

your neck. Lean back as far as you can (without fallingbackwards, of course!). Repeat 5 times.


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Foot Dance Put one leg straight out in front of you. Point your toes

up and hold for 2 seconds. Then point your toes downand hold for 2 seconds. Repeat 3 times. Now rotate

your ankle to the right 3 times and then to the left 3times. Repeat with other leg.


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Rev Your Motorcycle Put your arms straight out in front of you. Pull your

hands up and back as far as they will go and hold for 5seconds. Then push your hands forward and down as

far as they will go and hold for 5 seconds. Repeat asleast 5 times.


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Upside-down T Put your palms together in front of your chest (fingers

pointing up). Press heels of hands downward as far asyou can and hold for 8 seconds. Repeat 5 times.

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1 -Computer Ergonomics

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