Garrett W E, Califf J C, Bassett F H
Am J Sports Med. 1984 Mar-Apr;12(2):98-103. doi: 10.1177/036354658401200202.
This study reports the histochemical fiber type composition of the human hamstring muscles. Muscle specimens from necropsy specimens were obtained from seven locations in the hamstring, four locations in the quadriceps, and one location in the adductor magnus. The hamstring muscles are shown to have a relatively high proportion of Type II fibers. Type II fibers are more involved with exercise of higher intensity and force production and it is postulated that the hamstrings are capable of high intrinsic force production. The hamstrings are two-joint muscles and are, therefore, subject to increased stretch and force production extrinsically by motion at the hip and knee. It is proposed that high levels of tension in the hamstrings produced by intrinsic force production and extrinsic stretch may make them prone to injury in periods of intense muscular activity. This proposal is also relevant to other frequent athletic muscle injuries.
本研究报告了人类绳肌的组织化学纤维类型组成。尸检标本的肌肉样本取自绳肌的七个部位、股四头肌的四个部位以及大收肌的一个部位。结果显示，绳肌中II型纤维的比例相对较高。II型纤维更多地参与高强度运动和力量产生，据推测，绳肌具有较高的内在力量产生能力。绳肌是双关节肌肉，因此，会因髋部和膝部的运动而在外部受到更大的拉伸和力量产生。有人提出，内在力量产生和外部拉伸在绳肌中产生的高水平张力可能使它们在剧烈肌肉活动期间容易受伤。这一观点也适用于其他常见的运动肌肉损伤。
