Tian Jia, Fan Yu-bo, Sun Xiao-min, Chu Yun, Sun Zhong-qiu
Biomechanics Research Laboratory, Sichuan University, Chengdu.
Space Med Med Eng (Beijing). 2002 Dec;15(6):450-2.
Objective. To investigate the effect of eccentric strengthening (EC) exercise on muscular structure, plasma CK and biomechanical behavior under different mechanical loadings and to study the mechanical factors involved in sports muscle injury. Method. We developed an apparatus to do eccentric strength training with male SD rats under different mechanical loadings and to measure the biomechanical behavior. Result. No significant difference (P>0.05) of muscular structure, plasma CK and biomechanical behavior were found between high and low force groups. Conclusion. Skeletal muscle injury after cyclic EC with different mechanical loadings suggested that muscle damage is not simply a function of peak muscle force.
目的。研究离心强化（EC）运动在不同机械负荷下对肌肉结构、血浆肌酸激酶（CK）和生物力学行为的影响，并探究运动性肌肉损伤所涉及的力学因素。方法。我们开发了一种仪器，用于在不同机械负荷下对雄性SD大鼠进行离心力量训练，并测量其生物力学行为。结果。高负荷组和低负荷组之间在肌肉结构、血浆CK和生物力学行为方面未发现显著差异（P>0.05）。结论。在不同机械负荷下进行周期性EC后出现骨骼肌损伤，这表明肌肉损伤并非仅仅是峰值肌肉力量的函数。
