Common Sitting Habit
Forward Leaning,
limited backrest

Back problems are a growing provlem among workers - weather the correct result of improper seating or aggravated by it. Statistics indicate that on average, 22 week days are lost each year per employee due to back complaints. That hurts both the worker and the employer.

What can be done? First of all, we need to learn what we call "the science of seating." Proper seating is a harmonious synergy or "contact" between the user and the chair. And while Bristol chairs are among the most ergonomically advanced in this region, to derive maximum benefit, one must also learn how to sit properly.

Cultivating a healthy seating Posture

Despite appearances, seating is not static, but dynamic. It requires movement and muscular effort. Well-designed office chair allow the user to assume the optimal position while allowing also for movement.
Why is this important?
The vertebral column is comprised of 7 cervical, 12 thoracic, and 5 lumbar vertebrae, which constitute the moving part of the spinal column. This movement is made posible by discs which separate the vertebrae and act as cushions and shock absorbers. These discs, having no blood-carrying vessels, rely solely onnourishment from adjoining tissues through a process called diffusion. This can only be accomplished through movement. Hence, a rigid, stationary posture results in stress, and eventually injury, to these discs.
Correct posture is also essential to good seating. For while the discs can support pressure-bearing loads, they are prone to rupture if subjected to tension for prolonged periods.