钾钠离子与骨骼肌疲劳的关系研究进展

骨骼肌的收缩能力是影响机体运动能力的重要因素。肌膜内外离子的运动,决定着体内生物电的变化。剧烈运动时,由于代谢产物堆积、酸碱平衡失调等因素,可使形成生物电的主要离子K^＋,Na^＋浓度发生变化,特别是K^＋浓度变化尤为突出,近而影响膜电位,最终使肌肉兴奋性下降,运动能力降低,出现疲劳。基于K^＋,Na^＋与骨骼肌疲劳之间存在重要关系,本文就近年来国内外钾、钠离子方面的研究做一综述。

Research on the Na+,K+and Skeletal Muscular Fatigue

The contractility of skeletal muscle is an important factor which influences performance.Ionic motion of exterior and interior determines the changes of bioelectricity in vivo.Accumulation of metabolic product and acid-base disturbance induced the changes on concentration of K+,Na+,which formed bioelectricity mainly,particularly the changes of K+.These changes affected membrane potential at first,then induced muscle excitability declination,at last resulted in fatigue.Owing to the important relationship bet...