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正常人的心律,是由窦房结的自生节律所决定,同时又受变感神经和副交感神经的影响。作者以54例“无心脏病”的室性期外收缩(VPC)的病例为对象,对心率和VPC 的日内变化及运动试验中出现的VPC 变化与年令的关系,分别进行了心电图监测及自行车测力计试验的研究。其结果,将中年组(40～59岁)、高龄组(60岁以上)与青年组相比,白天心率相对为慢,而夜间睡眠后心率相对为快。而夜间睡眠后与白天相比,心率随年令增长而减少,其减少程度与年龄增长间呈逆相关,白天,中、高龄的心率较年轻人缓慢的原因,一般认为中、高龄在
Normal heart rhythm is determined by the spontaneous rhythm of the sinus node, while being affected by the parasympathetic and parasympathetic nerves. The author of 54 cases of “no heart disease,” the cases of ventricular contraction (VPC) as the object, the heart rate and VPC changes in the day and exercise test VPC changes and the relationship between the year, respectively, ECG monitoring and bicycle Study on dynamometer test. As a result, in the middle-aged group (40 to 59 years) and the senior group (over 60 years), the daytime heart rate was relatively slow compared with the youth group, and the nighttime heart rate was relatively fast. However, compared with daytime, nighttime heart rate decreases with the increase of the year, and the degree of decrease is inversely correlated with the age. The heart rate of the day, middle and old age is slower than that of the young people.