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If we look at the position of the spine on the photographs opposite, we notice that it does not change. The muscles of the vertebral groove (which go along the vertebrae from top to bottom) remain in isometric contraction throughout the movement.
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We observe a slight forward inclination of the chest, whose axis of rotation is located at the hips.
It is therefore important to stop the movement when the heels are likely to lift off the ground, revealing a lack of flexibility in the ankles, which is quite frequent.
This position is quite easy to find, occurring generally when the thighs are horizontal. |
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COMPLETE BENDING or COMPLETE SQUAT.
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The demonstration is carried out with no additional load.
Under these conditions, the risks of trauma are low, but not completely ruled out.
We observe an inversion of the vertebral arching in the lumbar region.
With a load, the intervertebral discs are pushed to the back of the spine due to the pressure exerted by the vertebrae in the anterior region. |
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CONSEQUENCES.
When you stand up, the spine automatically returns to a normal and correct position.
The discs do not have time to reposition in the alignment of the vertebrae, they are therefore "pinched" by the posterior side of the vertebrae.
Risks:
- Lumbago,
- Sciatica,
- Cruralgia,
- Slipped disc.
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Chinese studies have shown that the Chinese suffer more from knee arthrosis than the Americans. It was concluded that this was largely due to the Chinese habit of kneeling down throughout the day.
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