MYOFIBRILLAR DISRUPTION & MUSCLE PROTEIN SYNTHESIS FOLLOWING RESISTANCE EXERCISE

这项研究考察了肌原纤维与 损伤和肌肉蛋白质合成率(MPS) 隔离的同心(CON)或偏心(ECC)电阻 六名力量训练有素的男性进行锻炼。总积分值是从 用标记法测定活检组织中L-[1，2-13C2]亮氨酸 以评估期为中点的持续输液技术 大约是运动后24小时。我们得出结论，ECC 阻力训练阶段对骨骼肌的破坏性最大， 训练会减弱这种影响，而运动诱导的纤维 在训练后的5天不活动后，破坏基本上得到修复 研究对象。

This study examined the relationship between myofibrillar disruption and muscle protein synthetic rate (MPS) following an isolated bout of concentric (Con) or eccentric (Ecc) resistance exercise in six strength-trained males. MPS was calculated from the enrichment of L-[1,2-13C2]leucine in biopsies using the primed, constant infusion technique with the midpoint of the assessment period being approximately 24 h post-exercise. We conclude that the Ecc phase of resistance exercise is most disruptive to skeletal muscle, that training attenuates this effect, and that exercise-induced fiber disruption is essentially repaired after 5 d of inactivity in trained subjects.