When you sit on a couch that makes the low back lower than the knees, the pelvis is bent backward, which applies an excessive burden on the low back, resulting in low back pain. The distortion of the pelvis causes the distortion of the spine (Fig. 1 & 2).
Countermeasure: put a cushion or pillow under the buttocks to adjust the low back to the position higher than the knees.
(2) Wearing a corset all the time encourages low back pain
A corset is effective to relieve pain at the time of acute low back pain by keeping the low back stable. But wearing a corset for a long time weakens the muscles around the low back and causes the opposite effect, which can be the distortion of the spine.
Which bag is good to prevent the distortion of the spine, a shoulder bag, a back pack or a hip pack? (Fig. 3)
The answer is a hip pack. A hip pack (waist pack) is recommended to prevent the distortion of the spine because the weight is at the center of the low back (Fig. 4).
A shoulder bag makes the balance between the right and the left lost, possibly causing the distortion of the spine. When you use a shoulder bag, it is recommended to change the sides to carry on every 30 minutes.
A back pack looks like putting less burden on the back, but when the slings are too loose, your upper body is pulled backward due to the weight of the bag so that you have a head forward posture without thinking to keep a balance and that causes low back pain. It is important not to make a gap between the back and the back pack by tightening the slings (Fig. 5).
(3) Footwear that the heel is not fixed
Footwear that the heel is not fixed like slippers, sandals makes you shuffle weighing backward, which makes your pelvis tilt back and leads to the distortion of the whole body (Fig. 6).
(4) A bad tooth
A bad tooth makes you bite on the other side without thinking, causing the distortion of the jaw, leading to the distortion of the neck, upper back and lower back. It is important to treat your decayed teeth and bite on both sides of the teeth.