Anikin V V
Kardiologiia. 1978 Mar;18(3):116-9.
The rate of cardiac contractions was studied prior to and during the bicycle ergometry test and in the period of restitution in 140 patients with angina pectoris of various severity as compared to practically healthy males. In distinction to healthy individuals, patients with angina pectoris reacted to physical exertion of equal force by a higher rate of cardiac rhythm which returned back to normal more slowly in the period of restitution. They were also marked by more rapid "uneconomical" expenditure of the cardiac chronotropic reserves. In angina pectoris, the capacity of the heart to maximum increase in the rate of contractions was limited. With the growth in the severity of chronic coronary insufficiency, the attack of angina induced by muscular exertion developed at a lesser frequency of the cardiac rhythm (p is less than 0.001).
对140例不同严重程度的心绞痛患者在自行车测力计测试前、测试期间及恢复阶段的心脏收缩率进行了研究，并与实际健康的男性进行了比较。与健康个体不同，心绞痛患者对同等强度的体力活动的反应是心律加快，且在恢复阶段心律恢复正常的速度更慢。他们还表现出心脏变时储备的“不经济”快速消耗。在心绞痛患者中，心脏收缩率最大增加的能力是有限的。随着慢性冠状动脉供血不足严重程度的增加，由肌肉运动诱发的心绞痛发作时的心律频率较低（p<0.001）。
