Gobbato F, Fiorito A, Cornelio G
Lav Um. 1977 May;29(3):65-80.
The authors analysed the behaviour of the mechanical systole (electromechanical systole; tension time, left ventricular ejection time), as well as of the diastole (both cardiac and hemodynamic diastole) during exercise tests performed on a bycicle ergometer, with 40, 80, 120 watt workloads. The mechanical systole--as well as its components--duration is influenced, during exercise test, by both heart rate and stroke volume--pulse pressure being assumed as an indirect index of the latter. The study of the correlation between the two above mentioned parameters has a great importance in evaluating the cardiac pump efficiency both in health and disease. The study of the behaviour of diastole is likewise very important, as it provides useful information concerning: a) the length of the cardiac muscle post-exercise recovery phase; b) the coronary available perfusion time; c) the Windkessel (arterial bellows) emptying time. Moreover, the blood pressure fall rate in diastole is an useful indirect measure of the peripheral resistance changes during muscular work. A statistical analysis is made and the correlation coefficients and the regression equations between the various parameters are defined.
作者分析了在自行车测力计上进行的运动试验中，机械收缩期（机电收缩期；张力时间、左心室射血时间）以及舒张期（心脏舒张期和血流动力学舒张期）在40瓦、80瓦、120瓦工作负荷下的行为。在运动试验期间，机械收缩期及其各组成部分的持续时间受心率和每搏输出量的影响——脉压被视为后者的间接指标。研究上述两个参数之间的相关性对于评估健康和疾病状态下的心脏泵血效率具有重要意义。舒张期行为的研究同样非常重要，因为它提供了有关以下方面的有用信息：a）心肌运动后恢复阶段的时长；b）冠状动脉有效灌注时间；c）弹性贮器（动脉风箱）排空时间。此外，舒张期血压下降率是肌肉工作期间外周阻力变化的有用间接指标。进行了统计分析并确定了各参数之间的相关系数和回归方程。
