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为判定随增龄是否出现心血管交感神经系统调节作用增强和副交感神经系统调节作用降低,作者对不同年龄的男性志愿者测量了血浆去甲肾上腺素浓度和定量检查呼吸性窦性心律失常(R—R间距变化),并检测眼虹膜传入交感和副交感神经系统以及血浆肾上腺素水平。方法所有受试者均询问病史和作体检。对长期服药、舒张压大于100mmHg、体重超过理想体重的150％及空腹高血糖病例予以排除。受试者共103名男性,年龄19～82岁,平均体重为理想体重的110±1％,空腹血糖水平低于115mg％,糖基红蛋白小于10％总血红蛋白。受试者进食种类不定,
In order to determine whether there is increased cardiovascular sympathetic nervous system regulation and decreased parasympathetic nervous system regulation with increasing age, the authors measured plasma norepinephrine concentrations and quantitatively measured respiratory sinus arrhythmias (R -R changes in spacing), and the afferent iris afferent sympathetic and parasympathetic nervous system and plasma adrenaline levels were examined. Methods All subjects were asked about their medical history and physical examinations. Long-term medication, diastolic blood pressure greater than 100mmHg, weight over 150% of ideal body weight and fasting hyperglycemia cases be excluded. A total of 103 males, aged 19-82 years, average body weight of 110 ± 1% of ideal body weight, fasting blood glucose levels below 115 mg%, and glycomatrins less than 10% total hemoglobin. Subjects eat a variety of uncertainties,