变力性一词通常用来描述心肌收缩性的变化。
The term inotropic is commonly used in discussing changes in myocardial contractility.
结论：山参果汁总皂苷具有负性肌力和负性频率作用，即抑制心肌收缩和舒张功能，减慢心率、降低动脉血压。
Conclusion WGFS has the effects of negative frequency named restraining cardiac muscle contraction and stretch function, and reducing rhythum of the heart and blood pressure.
结论：XT通过阻滞豚鼠左房肌的电压依赖性和受体调控性钙通道而发挥抑制心肌收缩力的作用。
Conclusion: XT blocked not only the voltage dependent calcium channel, but also the receptor operated calcium channel in the isolated guinea pig atria.
过敏性休克时心肌收缩力减弱，小血管扩张，毛细血管通透性增加。
When allergic shock the cardiac muscle shrinkage force is weaken, the minute vessel expands, the blood capillary permeability increases.
XT对哇巴因的正性肌力作用及随后出现的心肌收缩力降低的毒性反应均有明显的对抗作用。
Furthermore, XT not only attenuated the positive inotropic action, but also delayed the following toxicity response induced by ouabain in the isolated left atria.
结果表明：中枢性心律失常时，各种异位心律产生的心肌收缩力均较窦性心律下降。
Results suggest that the level of the myocardial contractility with ectopic arrhythmia was lower than that of the sinus rhythm.
耐力型运动心脏内分泌改变对于增强心肌收缩性，增强心肌有氧能力，调节机体能量节省化状态和储备力有重要意义。
The endocrine changes of endurance athletic heart have essential significance for the enhancement of myocardial contractility, aerobic endurance, and reserve.
运动员的心室顺应性较好，心肌收缩力较强；
Myocardial contractility and cardiac compatibility are better in athletes;
运动员的心室顺应性较好，心肌收缩力较强；
Myocardial contractility and cardiac compatibility are better in athletes;
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