Schultz A, Haderspeck K, Takashima S
Spine (Phila Pa 1976). 1981 Sep-Oct;6(5):468-76. doi: 10.1097/00007632-198109000-00008.
Quantitative theoretical analyses of the ability of trunk muscle contraction forces to reduce lateral curves in the spine are presented. The effects of contraction of each of 68 muscle slips on each of 13 configurations of scoliosis were examined using biomechanical models of the trunk. The lateral curve, sagittal curve, and longitudinal axis rotation changes that resulted from contraction of these muscles were determined in each case. The muscles best able, from a biomechanical viewpoint, to reduce different lateral curves are listed. Effects of initial postural configurations and the consequences of reflex attempts to right the trunk after contracting a trunk muscle are described. Substantial changes in spine configuration can result from trunk muscle contractions of even modest intensity.
本文对躯干肌肉收缩力减少脊柱侧弯的能力进行了定量理论分析。利用躯干生物力学模型，研究了68条肌束中每条肌束收缩对13种脊柱侧弯形态的影响。在每种情况下，确定这些肌肉收缩导致的侧弯、矢状面弯曲和纵轴旋转变化。列出了从生物力学角度最能减少不同侧弯的肌肉。描述了初始姿势形态的影响以及躯干肌肉收缩后试图矫正躯干的反射行为的后果。即使是适度强度的躯干肌肉收缩也可能导致脊柱形态的显著变化。
