Sinkjaer T, Toft E
Nord Med. 1989;104(5):142-4.
The neural network excites when a stretch reflex is elicited during a physical examination. It is important to be aware that the stretch reflex depends on the contraction level of the muscle before stretch, and on the amplitude and velocity of the muscle stretch. A changed resistance from passive tissue or muscle fibre them self has to be taken into account when evaluating the size of the stretch reflex. A weak contraction compared with no contraction in the stretched muscle decrease the variation in the size of the stretch reflex. Influence from other types of receptors and synergistic and antagonistic muscles can also contribute to the stretch reflex.
在体格检查中引出牵张反射时，神经网络会被激活。需要注意的是，牵张反射取决于牵张前肌肉的收缩水平、肌肉牵张的幅度和速度。在评估牵张反射的大小时，必须考虑被动组织或肌肉纤维自身阻力的变化。与被拉伸肌肉无收缩相比，较弱的收缩会减小牵张反射大小的变化。其他类型感受器以及协同肌和拮抗肌的影响也可能对牵张反射有作用。
