The importance of office chairs can easily be tested by anyone. The test is simple. It involves sitting upright on the edge of a chair with the abdominal muscles clenched so that the spine is held straight. Most people who do this for ten minutes will be sweating profusely by the end of that period.
When it is considered that ordinary office workers are expected to sit before their computers for about eight hours per day it becomes apparent that sitting in such a position for such a long period either demands great physical strength or that the body must compensate in some way to relieve the muscular strain that is involved.
The body does compensate by shifting about so that the muscular strain involved in sitting 'properly' is relieved. In shifting the position known as slouching becomes most comfortable but the spinal curves that are essential for back health are contorted by slouching.
The spine is composed of vertebra stacked upon each other in four regions known as the cervical, thoracic, lumbar and sacral. Most often, but not always bones in the lumbar region can be misplaced by sitting for long periods. The soft tissue between the bones may also prolapse putting pressure on the nerves causing pain, numbness and discomfort.
A most important consideration is the curved and padded backrest. This may be modeled on the shape of a normal spine but almost every spine is slightly different. Therefore a 'normal' backrest may not be suitable for a particular spine and some slight adjustments may be required. A small lever can be used to adjust the angle of the backrest.
Injuries can be caused in the instant that a person rises from a sitting posture or assumes one prior to starting work. In a split second of awkwardness a prolonged injury can be caused. Casters on the feet of chairs can do much to prevent such injuries because a seat can be pushed back when rising so that the knees simply have to be straitened. Similarly, when seating herself a person can first sit and then pull herself towards her desk, so avoiding a twisting action.
Another important consideration for people who sit all day is the height of their seat from the floor. This has to be related to the height of the desk and the ways in which the arms must be angled over key boards. When the body is positioned correctly in between the chair and the work station a person may be comfortably situated to be productive from one day to the next. This illustrates the importance of office chairs in any industrial environment.
When it is considered that ordinary office workers are expected to sit before their computers for about eight hours per day it becomes apparent that sitting in such a position for such a long period either demands great physical strength or that the body must compensate in some way to relieve the muscular strain that is involved.
The body does compensate by shifting about so that the muscular strain involved in sitting 'properly' is relieved. In shifting the position known as slouching becomes most comfortable but the spinal curves that are essential for back health are contorted by slouching.
The spine is composed of vertebra stacked upon each other in four regions known as the cervical, thoracic, lumbar and sacral. Most often, but not always bones in the lumbar region can be misplaced by sitting for long periods. The soft tissue between the bones may also prolapse putting pressure on the nerves causing pain, numbness and discomfort.
A most important consideration is the curved and padded backrest. This may be modeled on the shape of a normal spine but almost every spine is slightly different. Therefore a 'normal' backrest may not be suitable for a particular spine and some slight adjustments may be required. A small lever can be used to adjust the angle of the backrest.
Injuries can be caused in the instant that a person rises from a sitting posture or assumes one prior to starting work. In a split second of awkwardness a prolonged injury can be caused. Casters on the feet of chairs can do much to prevent such injuries because a seat can be pushed back when rising so that the knees simply have to be straitened. Similarly, when seating herself a person can first sit and then pull herself towards her desk, so avoiding a twisting action.
Another important consideration for people who sit all day is the height of their seat from the floor. This has to be related to the height of the desk and the ways in which the arms must be angled over key boards. When the body is positioned correctly in between the chair and the work station a person may be comfortably situated to be productive from one day to the next. This illustrates the importance of office chairs in any industrial environment.
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