运动影响肌球蛋白不同异构体的表达,体力活动下降导致肌纤维构成向快的肌球蛋白异构体转变。骨骼肌中葡萄糖转运体4(GLUT4)是协助葡萄糖转运的主要蛋白质,在慢肌中的含量要高于快肌纤维,而运动增加GLUT4的表达。运动中GLUT4表达与肌纤维类型转变之间可能存在着一定的联系,其主要调节因素都是运动。 Exercise affects the expression of different myosin isoforms, resulting in a decrease in physical activity leading to the conversion of myofibers to fast myosin isoforms. Glucose transporter 4 (GLUT4) in skeletal muscle is a major protein that assists glucose transport, which is higher in slow muscle than fast muscle fiber, while exercise increases GLUT4 expression. There may be some connection between the expression of GLUT4 and the type of muscle fiber in exercise. The main regulators are exercise.