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Dynamic Posture
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In addition to the support offered to the spinal column, it is also important to provide positive support to the muscles and other tissues used to maintain a correct posture.
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An effective prescription is to sit in an office chair which provides dynamic support, meaning that the chair safely allows the change in sitting position, varying between forward-leaning, backward-leaning and sitting upright. This prevents strain and ensures the healthy interplay of stress and relaxation between the muscles and the spinal column. |
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In addition to the changes given by the movement now provided by the underseat mechanism, there have also been changes to the overall design of the seat and back cushions. The seat has changed to provide a smooth 'waterfall' front edge to reduce the pressure under the lower thigh and a contoured 'posture' seat to spread the weight of the upper body over as wide an area as possible. |
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The back of the office chair has also changed, almost beyond recognition, with positive adjustable lumbar depth and positioning becoming almost standard on many modern chairs. The key here is to once again provide control of the users spine, often directly by the curvature of the back pad itself, but once again on a few newer chairs, by the control of the pelvis and in particular the prevention of the backwards tilt, retaining the lazy S curvature of the spine and a better posture as a result. |
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Of course it is important here that, in all cases, the back is adjusted to each individual user so that the back pad fits naturally into the curve of the spine. |
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