通过建立脊柱前屈的力学模型，定量计算腰骶椎间盘承受的应力。
Based on mechanics model of spinal flexion, stress upon lumber intervertebral disc was quantitatively calculated.
就像一辆车减速一样，在后弯之后前屈之前，脊柱也需要一些时间来恢复到中立状态。
Like a car gearing down, the spine needs some time to return to neutral after back bending before moving into forward bending.
犁式，肩倒立和坐立或站立前屈集中脊柱的压缩，导致损伤。
Plow, shoulder stand and seated or standing forward bends concentrate compression forces on the spine, which can lead to injury.
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