HP Vectra XU6 User Manual page 34

2 Using Your PC
Working in Comfort
The chair must provide a comfortable sitting position.
You should be able to easily adjust the height. Minimum range should
•
be 40 to 52 cm (15.5 to 20.5 in) as measured from the floor.
It should have a back support that is adjustable in both height and tilt
•
(0 to 30 degrees backwards). It is important that your lower back be
correctly supported (lumbar curve of the back).
You should be able to freely swivel from side to side.
•
The front of the seat should be curved ("waterfall" edge), and the
•
chair fabric should be breathable.
If your chair has armrests, they should be fully adjustable. The arms
should not interfere with adjusting the chair or moving it close to the
desk.
Adjust the chair so that the work surface is at elbow height.
If the chair has an adjustable seat pan, inclining the seat slightly
forward will transfer some of the pressure from the spine to the thighs
and feet. This will relieve spine fatigue.
Use a chair with an adjustable
lumbar (back) support, which
can be moved up and down.
Adjust the back of the chair so
that the part that curves
outward (towards the front of
the chair) corresponds to the
part of your lower back that
curves inward. (Portable lumbar
cushions are also available at
medical and office supply
houses.)
22 English
Adjust the angle of the back
rest and seat tilt so that your
back is erect or angled slightly
backward (90 to 110 degrees).
Some people feel more
comfortable up to a 135 degree
angle.