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力量性的训练可以使骨骼肌变得粗壮,其机制长期以来被认为是由于肌纤维横截面增大,不能引起肌纤维数目增多,但被归结于肌纤维分裂形成技状结构,肌分纤维总数目不变。近几年来由于实验方法的改进对这一问题有了崭新的认识,1961年Mawzo的经典性的论著报导用电子显微镜研究青蛙的骨骼肌周围区域发现了一种光学显微镜不能鉴别的细胞,与肌纤维有极其密切的联系,命名为卫星细胞(Satelli teCell)。卫星细胞的发现近几年来经各国学者的深入研究,发现与动物出生后骨骼肌的发育,适应运动及其他活动刺激后骨骼肌的肥大增粗,运动性损伤肌纤维再生
Strength training can make skeletal muscle become thick, the mechanism has long been thought to be due to muscle fiber cross-section increases, can not cause an increase in the number of muscle fibers, but was due to the formation of muscle-like fibers to split the technical structure, the total number of myofibers unchanged . In recent years due to experimental methods to improve this issue has a new understanding of Mawzo’s classic 1961 article by electron microscopy of the frog’s skeletal muscle area found a light microscope can not identify cells and muscle fibers There is a very close connection, named satellite cells (Satelli teCell). The discovery of satellite cells in recent years by scholars from various countries in-depth study found that after the birth of the animal skeletal muscle development, exercise and other activities to stimulate skeletal muscle hypertrophy, motor injury muscle fiber regeneration