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Table 1 Guidelines for workplace ergonomics and body posture used in the RSI@Work study

From: The (cost-)effectiveness of a lifestyle physical activity intervention in addition to a work style intervention on the recovery from neck and upper limb symptoms in computer workers

Topic Advice
Workplace ergonomics  
Seat height Feet flat on the floor, upper leg completely supported
Seat depth Lower and upper back completely supported, about 10 cm between back of the knee and front of the seat
Arm rests Support the elbows (and forearms)
Height of back support Thickening of back support at belt height
Table height At same height as armrest while typing, 5 cm above arm rest while reading.
Position of computer screen Straight in front of worker. Rotation of screen less than 10°. Place screen perpendicularly on window. Distance between screen and eyes dependent on screen dimensions but at least 50 cm.
Computer screen height Top of the screen at eye height level
Keyboard Plat on desk, straight in front of screen.
Mouse(pad) Close to keyboard. Try to alternate the position of the mouse(pad) between right and left of keyboard.
Body posture  
Back Straight. Completely supported by backrest.
Neck Head rotation less than 20°. Minimal neck flexion/extension (see position of computer screen).
Shoulders Relaxed (not raised)
Arms Close to upper body
Hand, wrist, forearm In straight line. Ulnar deviation between -5° and 20°.
General Workers were advised to change their posture during the workday.