أثر تطبيق التقلص العضلي اللامركزي على الألياف العضلية و أليات التجديد العضلي

الملخص EN

The eccentric contraction is used in muscle strength training and it is dependent on the elasticity of muscle tissue.

In this form of contraction, muscle are actively lengthened, reflecting divergent of the attachement points at the level of the contractile units.

The present study aims to investigate the effect of eccentric contraction on muscle tissue, which may lead to mechanical damage of myofibrillar structures.

Therefore, a variety of physiological responses are produced which play an important role in regenerating damaged areas in muscle fibers.

The stimulation of the regeneration process by the intervention of satellite cells located between the plasma membrane and the basement membrane of myofibers, is considered to be the beginning of muscle hypertrophy by increasing the frequency of protein synthesis to produce new muscle fibers which increase muscle size.