| Sitting in the wrong chair, or adopting an incorrect | | | | ergonomic chair. |
| seating posture, can cause or accentuate back | | | | What is also required is a seat slide option and a |
| problems and back ache. Yet few people know | | | | seat tilt option combined with a waterfall seat |
| how to sit correctly and even fewer sit on a | | | | front. These two adjustments make sure that |
| suitable ergonomic chair that is adjustable to the | | | | the legs are adequately supported and that the |
| physical needs of their unique body. | | | | angle between the torso and the legs can be kept |
| What is an ergonomic chair (or task chair)? | | | | at more than 90 degrees. The waterfall chair |
| Ergonomics is a science that looks at the | | | | front avoids pressure points close to the knees. |
| combining of safe and comfortable body | | | | The chair's backrest should have a sliding height |
| movements with the performance of a task or | | | | adjustment and a manual lumbar support. This will |
| multiple tasks. Usually this involves the human | | | | allow for variations between people of differing |
| body interacting with objects like a computer, a | | | | heights. Lumbar adjusters can take the form of |
| phone or some kind of work area and, in the | | | | an inflatable zone (controlled with a small balloon |
| case of an ergonomic chair, it also considers the | | | | pump) within the backrest, or a mechanical lumbar |
| persons interaction with the chair. | | | | support that can be lifted or lowered on the rear |
| Ergonomic chairs work by taking account of the | | | | of the backrest. |
| kinds of tasks that their users undertake by | | | | All good ergonomic chairs have a tension adjuster |
| incorporating specific design features into the | | | | that allows the chair's flexing movements to be |
| construction of the chair. These features lend | | | | tailored to the weight of each individual user. This |
| themselves to the anticipated usage of the chair | | | | balances the chair's feel to its users body mass. |
| and, in many instances, have a number of | | | | Other feature to look out for include armrests, |
| adjustable options that enable the seated person | | | | which should be height adjustable, and seat and |
| to customize their seat level and posture. | | | | backrest constructions that can be of a padded |
| Different ergonomic chairs have different | | | | material or breathable modern mesh. |
| "tweaking" options, but the most basic | | | | Setting up the chair |
| requirements are seat height adjustment, variable | | | | As a general guide, the chair should be adjusted |
| backrest angle and a swivel movement. | | | | to ensure that the seat height provides a 90 |
| What you should look for in a good ergonomic | | | | degree angle between the upper and lower legs |
| chair | | | | and that the seat front does not come into |
| If you want to avoid back pain and ensure good | | | | contact with the knees. Most people who work at |
| posture, achieve correct spinal alignment and gain | | | | a desk will find that having the seat tilted slightly |
| seated ease of movement, then the adjustment | | | | downwards at the front will be more comfortable |
| options given above are inadequate for a "good" | | | | for the back. |