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就离心收缩机制存在的问题探讨肌丝滑行理论的修正

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Author:: No author available

Journal Title:: Acta Physiologica Sinica

Issue:: 1

DOI:: 10.13294/j.aps.2020.0096

Key Word:: No keyword available

Abstract：按照肌纤维收缩时长度的变化,可将骨骼肌收缩分为向心(长度变短)、等长(长度不变)和离心(长度变长)收缩.与前两种收缩形式相比,离心收缩在增加肌肉体积和肌力等方面具有明显的优势[1,2],偏重于离心收缩的运动方式作为训练手段已广泛应用于竞技体育和运动康复领域[1-31.然而,离心收缩很容易对骨骼肌的结构和功能造成负面影响,出现超微结构改变(如肌节、Z盘损伤),引起肌肉酸痛、肿胀和肌力下降等损伤症状[1,4,5].因此,研究离心运动性骨骼肌损伤机制,对于制订合理的体能训练或运动康复方案具有重要的实践指导意义.

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