Ergonomics is also called human factors engineering, and examines ways to adapt the working environment to ensure a safe and productive workplace. Which of the following factors is the most impoant to improve the physical design of a sedentary job?

Static body and holding positions should be avoided. For instance, persons working at a computer terminal should be reminded to do a sho walking task every 20 minutes. Objects can be placed on a suppoing surface instead of handheld. Eliminating the waist motion such that everything needed is within arms reach will reduce stress on back, neck, and shoulders. The less torso movement, the better.