Apple MC561LL/A Manual do Utilizador Página 120

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120 Chapter 6 Last, but Not Least
Understanding Ergonomics
Herearesometipsforsettingupahealthyworkenvironment.
Keyboard
Whenyouusethekeyboard,yourshouldersshouldberelaxed.Yourupperarmand
forearmshouldformanapproximaterightangle,withyourwristandhandinroughly
astraightline.
Changehandpositionsoftentoavoidfatigue.Somecomputerusersmightdevelop
discomfortintheirhands,wrists,orarmsafterintensiveworkwithoutbreaks.Ifyou
begintodevelopchronicpainordiscomfortinyourhands,wrists,orarms,consulta
qualiedhealthspecialist.
Mouse
Positionthemouseatthesameheightasthekeyboardandwithinacomfortablereach.
Chair
Anadjustablechairthatprovidesrm,comfortablesupportisbest.Adjusttheheight
ofthechairsoyourthighsarehorizontalandyourfeetareatontheoor.Thebackof
thechairshouldsupportyourlowerback(lumbarregion).Followthemanufacturer’s
instructionsforadjustingthebackresttotyourbodyproperly.
Youmighthavetoraiseyourchairsothatyourforearmsandhandsareattheproper
angletothekeyboard.Ifthismakesitimpossibletorestyourfeetatontheoor,use
afootrestwithadjustableheightandtilttomakeupforanygapbetweentheoorand
yourfeet.Oryoucanlowerthedesktoptoeliminatetheneedforafootrest.Another
optionistouseadeskwithakeyboardtraythat’slowerthantheregularworksurface.
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