Seene T, Alev K
Department of Sports Physiology, Tartu University, Estonia, USSR.
Int J Sports Med. 1991 Apr;12(2):204-7. doi: 10.1055/s-2007-1024668.
In endurance-trained rats the myosin HC have a more rapid turnover rate than in control animals in all three types of skeletal muscle fibres, but in sprint-trained rats only in fast-glycolytic and fast-oxidative-glycolytic fibres. A comparison of the actin turnover rate in sprint- and endurance-trained animals shows that in both groups there are more rapid turnover rates in all types of muscle fibres in comparison with control rats. During long-lasting exhaustive exercise the turnover rate of myosin HC decreases. Twelve hours after exercise, myosin LC 2 and 3, and actin have a more rapid turnover than in control rats. Changes in the turnover rate of muscle contractile proteins during exercise and the recovery period after exercise reflect the functional conditions of the contractile apparatus in different types of skeletal muscle fibres and have a physiological significance.
在耐力训练的大鼠中，在所有三种类型的骨骼肌纤维中，肌球蛋白重链（myosin HC）的周转速度比对照动物更快，但在短跑训练的大鼠中，仅在快糖酵解纤维和快氧化糖酵解纤维中如此。对短跑训练和耐力训练动物的肌动蛋白周转速度进行比较表明，与对照大鼠相比，两组中所有类型的肌纤维的周转速度都更快。在长时间的力竭运动期间，肌球蛋白重链的周转速度降低。运动后12小时，肌球蛋白轻链2和3以及肌动蛋白的周转速度比对照大鼠更快。运动期间和运动后恢复期肌肉收缩蛋白周转速度的变化反映了不同类型骨骼肌纤维中收缩装置的功能状态，并具有生理意义。
