Does the stretch promote recovery the muscle injury?

尝试用离心收缩法制作重复性好的肌肉损伤模型。TA肌肉进行50次强制离心收缩，每10次收缩5次（每10秒一次收缩），间隔60秒恢复期。通过踝关节处的足背屈（从60度旋转至150度）以200度/秒的旋转速度进行偏心收缩。使用48小时后背屈扭矩小于10或更小的数据，认为通过使用上述条件能够制作具有高再现性的条纹损伤模型。接下来，验证该模型的肌肉损伤的恢复过程。结果：观察恢复的发生率与小肌纤维面积的出现、肌纤维的生长、D-MHC阳性肌纤维的比例、背屈力矩之间的相关性。

Making of the muscle injury model with high reproducibility by the eccentric contraction was tried. TA muscle was subjected to 50 forced eccentric contractions in 5 bouts of 10 contraction (one contraction every 10 sec) interspaced with a 60 sec recovery period. Eccentric contractions was performed by dorsiflexion of the foot at the ankle joint (rotation from 60 to 150 deg) with a rotational velocity of 200 deg/sec. The data was used from dorsiflexion torque after 48 hours is less 10 or less. It was thought that the stripe damage model with high reproducibility was able to be made by using the above-mentioned condition. Next, the recovery process from the muscle injury of this model was verified. As a result, the incidence that recovered as appearance of small muscle fiber area, growth of the muscle fiber, ratio of D-MHC positivity muscle fiber, dorsiflexion torque relating each other was observed.