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              legs and feet                                                                          

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              legs and feet                                                                          

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Plant feet firmly on floor or - if not possible - use a foot stool x Keep thighs parallel to floor x Ensure leg clearance from table or keyboard tray to avoid bumps, scratches, pinches, and torn clothing

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    lower back support                                                                                                                   Use a chair that provides lumbar (lower back) support - if adjustable,
adjust to maintain an erect sitting posture                                                                                                   Ideal chairs can be easily raised or lowered, and have 5 wheel legs for
safety                                                                        Keep feet planted firmly on floor or footstool to counterbalance forces on
lower back 

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    lower back support                                                                                                                   Use a chair that provides lumbar (lower back) support - if adjustable,
adjust to maintain an erect sitting posture                                                                                                   Ideal chairs can be easily raised or lowered, and have 5 wheel legs for
safety                                                                        Keep feet planted firmly on floor or footstool to counterbalance forces on
lower back 

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      neutral typing position                                                                                                                   Use an adjustable chair, keyboard tray, or desk/table to achieve the
"neutral position" of a straight hand: wrist: forearm                                                                                                Keep upper and lower arms at a 90 degree angle to each other                                               Position mouse as closely to keyboard as possible to minimize reaching
and twisting

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      neutral typing position                                                                                                                   Use an adjustable chair, keyboard tray, or desk/table to achieve the
"neutral position" of a straight hand: wrist: forearm                                                                                                Keep upper and lower arms at a 90 degree angle to each other                                               Position mouse as closely to keyboard as possible to minimize reaching
and twisting

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              viewing angles                        distances                                                                                                 Position monitor, keyboard, and chair in straight line                                                                   Top of monitor screen at or slightly below the eye horizon                                        Comfortable, non-straining distance to read monitor (typically 15-30
inches)                                                                 Adjust brightness, contrast, and color to comfortable levels                                                    Avoid glare by positioning away from windows and direct lights                                                                                                             Keep written work materials propped up near monitor screen 

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              viewing angles                        distances                                                                                                 Position monitor, keyboard, and chair in straight line                                                                   Top of monitor screen at or slightly below the eye horizon                                        Comfortable, non-straining distance to read monitor (typically 15-30
inches)                                                                 Adjust brightness, contrast, and color to comfortable levels                                                    Avoid glare by positioning away from windows and direct lights                                                                                                             Keep written work materials propped up near monitor screen 