采用大鼠强制游泳的方法 ,研究了高强度间歇训练和持续性训练对大鼠心肌肌球蛋白Ca2 + -ATP酶活性的影响。 6周训练后 ,以上两训练组大鼠的心肌肌球蛋白Ca2 + -ATP酶活性均增强 ,且间训组增长幅度更大 ,证明运动强度比运动时间对肌球蛋白Ca2 + -ATP酶活性的影响更强 ;特训组雌鼠比雄鼠心肌肌球蛋白Ca2 + -ATP酶活性的增长幅度大 ,提示心肌收缩蛋白在对运动强度和时间的适应方面 ,存在性别差异。 The rat forced swimming was used to study the effects of high-intensity interval training and continuous training on cardiac myosin Ca2 + -ATPase activity in rats. After six weeks of training, the activity of myocardial myosin Ca2 + -ATPase in the two training groups was increased, and the growth rate of interventricular senescence group was greater than that of the exercise group. It was proved that the exercise intensity was higher than that of exercise time on the activity of myosin Ca2 + -ATPase The effect of Ca2 + -ATPase activity in cardiac muscle of rats in special training group increased more than that of male rats, suggesting that there is gender difference in the adaptation of myocardial contractile protein to exercise intensity and time.