The office chair makers tells you that the chair should rest with a cushion
Cushions, people who can strain the lumbar muscles play a relieving effect, but there are a lot of stress when using the cushions. First, the cushion must be placed on the waist, back to the back is invalid. This is because the normal human spine has a total of three physiological bending, physiological needs they do not grow in a straight line, the thoracic back convex, cervical and lumbar forward convex, from the side, the spine like two S connection. Because of this physiological characteristics, waist and back can not be placed in the same plane.
Therefore, Office chair makers tell you you remember when sitting in a computer chair, if a cushion is placed on the waist, the waist can be effectively supported to maintain the lumbar flexion physiology, balance the pressure of lumbar and lumbar muscles, reduce strain, increase comfort, prevent and improve lumbar Discomfort, good for the stability of the spine.
Followed by the thickness of the cushion to be appropriate. Can not be too thin and too soft, so can not play the role of the lumbar support, nor too thick and too hard, too thick may cause excessive flexion of the lumbar spine, and too hard will be unpleasant. In the selection can be placed on the back of the pillow in the waist, if the pad after ten minutes still feel very comfortable, then the thickness is suitable, if you feel back pain or even pain, then the mat failed. Again, they already have lumbar disc herniation and lumbar spinal stenosis, but also pay attention to the comfort of the cushions.