The human’s spine consists of a series of curved sections called the Cervical, Thoracic and Lumbar spine. These three curves make up a natural S-curve. The lumbar is between L 1 and L5 and is built for strength and absorbs forces. If the backrest cannot provide sufficient support to the lumbar spine, you can develop a shoulder, neck and back pain which can result in soft tissue, bony and neurological injury.
A well designed backrest provides permanent contact to your back whether in a work or leisure environment. In addition to having the right chair, sitting correctly and maintaining the correct posture is critical.
In addition to the backrest, a good chair should be adjustable to suit the physical differences of users and the task undertaken.