Author: Eric Knight CPT(Canfit Pro), H.Ba. Kin, Ergonomics
If you end up sitting for eight hours at work, you might as well make yourself comfortable. Now that many things are done from the push of a button, most people don't have to get up from their chairs anymore. Therefore, people end up sitting all day at a desk and end up with sore necks, low back pains, and eye soreness. To reduce these discomforts, many workstations are now equipped with adjustable chairs. It seems someone finally figured out that we are not all built the same. However, when compared to non-adjustable chairs, operators on adjustable chairs had virtually the same neck and upper limb postures (Gerr et al., 2000) The reason for this is that Many employees do not know how to properly adjust their chairs. In a study by Grandjean and Burandt, 1988, workers assumed an upright posture only 50% of the time and used their backrest only 40% of the time. Here are a few quick tips on how to properly set your
adjustable chair.
Stand in front of your chair, facing it.
Adjust the seat height so that the top of the seat is just below your kneecap.
Then sit upright in your chair. The clearance between the front of seat and the back of your knees should be about the distance of a clenched fist. If the seat is too large or small, try and find a chair with an appropriate seat length for you.
On the back rest, there should be a cushioned area that sticks out. This part should support the hollow of your back. If the chair does not have this, use a small cushion or towel.
When resting on the back rest, it should be angled between 110 and 130 degrees. Your back rest should not be at 90 degrees. This is due to the fact that our backs are not straight, but rather a variety of curves.
Arm rests should be positioned so that your arms are at your sides and bent at 90 degrees
Happy seating!!!