Grew N D
Spine (Phila Pa 1976). 1980 Mar-Apr;5(2):149-54. doi: 10.1097/00007632-198003000-00009.
The study is an investigation into the form of the abdominal pressure reflex in normal individuals under isometric loading of the torso. Various directions of load are imposed, and both flexed and upright postures are adopted. The sensitivity of the pressurization to the applied moment is calculated, the form of the response being linear in each case. The results show that the response sensitivity varies with subject posture and mass and with the direction and site of loading. The highest sensitivities are in response to extensor moments and the lowest, when the torso is flexed. It would appear that the supportive influence of the trunk cannot be considered constant under all loading conditions, nor can a single explanation of its function be adequate under both extensor and flexor applied moments.
这项研究是对正常个体在躯干等长负荷下腹部压力反射形式的调查。施加了不同方向的负荷，并采用了屈曲和直立姿势。计算了加压对施加力矩的敏感度，每种情况下响应形式均为线性。结果表明，响应敏感度随受试者姿势、体重以及负荷方向和部位而变化。最高敏感度是对伸肌力矩的响应，而最低敏感度是在躯干屈曲时。似乎在所有负荷条件下，躯干的支撑作用不能被视为恒定不变，而且在伸肌和屈肌施加力矩的情况下，对其功能的单一解释都不充分。
