ESCAPE
THE ERGONOMIC DANGER ZONE
I have paraphrased the following information from the "To Your
Health" newsletter. My stress is always carried in my
shoulders. Some slight adjustments in your office can make a
big difference in your overall health.
Your Keyboard Height: When you are in a seated position and
sitting up straight, the position of the keyboard should be at
the height of your elbows or below. Most people will sit with a
keyboard height approximately level with their abdomen. This
forces the shoulders to remain in an elevated or shrugged
position, which activates a large muscle in your back - the
trapezius muscle - and can result in a great deal of pain if
that position is held too long.
Raising the height of your chair is the easy fix for this
problem. Other situations may require a more aggressive
approach, such as installation of a swing arm that allows for
adjustable positioning of the keyboard. Keep in mind that the
computer mouse should be at the same appropriate height of the
keyboard.
Your Monitor Height: The top of your monitor should be at the
level of your eyebrows or top of your head. Some individuals
have to place their monitor on a stack of large books to
maintain the appropriate height. If you are having trouble
seeing your monitor and maintaining a forward position of your
head, it is likely that you will end up suffering the
consequences of poor postural position.
Your Chair Height and Sitting Position: Attempt to maintain
flat-footed placement on the floor to help with overall balance
while sitting. Your objective is to maintain proper posture
while sitting by allowing as much contact between your body and
the chair. It is important to try to sit back in the chair as
far as possible and to maintain contact with your shoulders
against the back of the chair. The backs of your upper legs and
your buttocks should completely contact the base of the chair.
It will also help a great deal if you learn to sit while holding
in your lower abdomen for extended periods of time. This helps
support the soft tissue of the lower back, which is actually
under more strain in a seated position than when you are
standing.
It may seem like an oversimplification, but learning to sit up
straight, suck your stomach and keep your keyboard at the level
of your elbows and below are easy ways to minimize your risk of
chronic and repetitive-stress injuries at the workplace. That's
good news to you and your employer. Talk to your doctor for more
information.