Thepaut-Mathieu C, Maton B
Eur J Appl Physiol Occup Physiol. 1985;54(1):116-21. doi: 10.1007/BF00426310.
The muscle pronator teres was studied by surface electromyography during elbow flexion in a horizontal plane. The forearm was in semi-pronation and movement was performed at various velocities. A quantitative comparison was made between pronator teres activity and two main elbow flexors, biceps brachii and brachioradialis. The mean timing of the onset of activity was constant: biceps brachii was activated first followed by pronator teres and brachioradialis, and the lower the velocity of flexion, the earlier was the onset of biceps brachii activity. There was a linear relationship between the integrated EMG from each muscle and the work done. However, this relationship was less exact for pronator teres and brachioradialis at low values of work, a finding which opens questions about the generality of this relationship and about the "muscle equivalent" concept. Pronator teres appears to participate in elbow flexion besides its role in pronation. Despite similar anatomical peculiarities, pronator teres does not behave in the same way as anconaeus or popliteus and, above all, it is not the sole muscle active in slow movement. Thus, all the stocky muscles lying close to an articulation do not behave in the same way.
通过表面肌电图对旋前圆肌在水平面内屈肘过程中进行了研究。前臂处于半旋前位，以不同速度进行运动。对旋前圆肌的活动与两块主要的屈肘肌肱二头肌和肱桡肌进行了定量比较。活动开始的平均时间是恒定的：肱二头肌首先被激活，随后是旋前圆肌和肱桡肌，且屈曲速度越低，肱二头肌活动开始得越早。每块肌肉的积分肌电图与所做的功之间存在线性关系。然而，在低功值时，旋前圆肌和肱桡肌的这种关系不太精确，这一发现引发了关于这种关系的普遍性以及“肌肉等效”概念的疑问。旋前圆肌似乎除了在旋前中发挥作用外，还参与屈肘。尽管有相似的解剖学特征，但旋前圆肌的表现与肘肌或腘肌不同，最重要的是，它不是慢动作中唯一活跃的肌肉。因此，所有靠近关节的短粗肌肉的表现并不相同。
