Hettich 9311393, Assembly Manual

Page: 23 / 100

23
Correct sitting posture
Sitting incorrectly can lead to injuries at joints, bowstrings and muscles. In order to prevent this it is nec-
essary to adjust your office chair and desk.
Apart from the following advise you should always prevent an uncomfortable sitting posture. If you
feel that the following advices leads you to an uncomfortable sitting posture simply adapt your needs.
Office Chair
• The sitting height has to be adjusted in way that your knee is angled by 90-120° when your foot is
flat on the ground.
• Sitting properly requires that your lower back touches the back rest. If possible align the seating
depth in order to avoid pressure from the seat pan to your lower leg.
• Sit upright but lean back in a relaxed position. If possible adjust the lumbar support of your chair to
your height.
Adjust the back rest in a way that pushes your upper body slightly forward but still offering enough
flexibility to yield movement.
• If possible adjust the height of your armrests. Your shoulders should be in a relaxed position when
your arms are touching the arm rest.
Desk
• Adjust the table height after you have found your correct sitting posture.
• Your elbows should be angled by 90-120° when your arms rest on the table top. The edge of the
top should not press against your arms.
Equipment on the desk
• Incident light (day light or lamps) on your monitor should approach the surface of your screen by
an angle of 90°.
• The height of your monitor should be adjusted in way that enables you to look slightly downward
while focusing the centre of your screen.
• Please keep a distance of 60-70 cm from your screen.
• A careful posture for your wrists can be achieved by a flat narrowed keyboard.
• Please heed the advice in the manuals of your further (ergonomical) equipment.
4 Correct position of seats
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