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Adjustability
increases productivity and reduces complaints of shoulder and back pain.
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In a survey of 2000
air traffic controllers
1. only about 10% adjusted their seats during the day
2. more than half were not aware of some of the adjustments
3. Some are reluctant to adjsut because it is not easy to adjust
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Solutions
1. Controls can be easily reached and adjusted when sitting.
2. Controls are easy to find and interpret.
3. Labels and instructions on the furniture are easy to understand.
4. No Tools are needed.
5. Controls provide immediate feedback.
6. The direction of operation of controls is logical and consistent.
7. Few motions are required.
8. Use of one hand only.
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