Pérot C, Goubel F
Eur J Appl Physiol Occup Physiol. 1982;48(1):51-8. doi: 10.1007/BF00421164.
With reference to the concept that contraction of a muscle can be inhibited by contraction of its antagonists, the excitability of a bifunctional muscle, the soleus (plantarflexor and adductor) was studied during voluntary isometric contractions of the abductors in man. For this purpose, the soleus monosynaptic stretch reflex (MSR) was solicited by means of quick-release dorsiflexion movements which also induce inactivation of the tibialis anterior (unloading reflex). When different initial torques of dorsiflexion were developed (reference conditions) the amplitude of the soleus MSR was found to be related linearly to the maximal value of angular acceleration. When an abduction torque was superimposed (combined efforts), the soleus response was always depressed, but no significant reinforcement of this inhibition was observed when the abduction torque increased. From present results, and from classical data concerning reciprocal inhibition between soleus and tibialis anterior, it is concluded that the MSR of a bifunctional muscle is depressed when the antagonists of either one of its functions are voluntarily activated.
参照肌肉收缩可被其拮抗肌收缩所抑制这一概念，在人体外展肌的随意等长收缩过程中，对双功能肌肉比目鱼肌（跖屈肌和内收肌）的兴奋性进行了研究。为此，通过快速背屈运动诱发比目鱼肌单突触牵张反射（MSR），该运动同时也会使胫骨前肌失活（卸载反射）。当产生不同的背屈初始扭矩（参照条件）时，发现比目鱼肌MSR的幅度与角加速度的最大值呈线性相关。当叠加外展扭矩（联合用力）时，比目鱼肌的反应总是受到抑制，但当外展扭矩增加时，未观察到这种抑制作用有显著增强。根据目前的结果以及关于比目鱼肌和胫骨前肌之间交互抑制的经典数据，得出结论：当双功能肌肉的任一功能的拮抗肌被随意激活时，该双功能肌肉的MSR会受到抑制。
