Spectral analysis of heart rate variability under mental stress.
Spectral analysis of heart rate variability under mental stress.
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精神压力下心率变异性的频谱分析。
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
H. Rüddel
中科院分区：
文献类型：
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作者：
W. Langewitz;H. Rüddel
有人声称，心率变异性功率谱中0.1 Hz分量的增加表明交感神经张力增加。我们测试了135名未服药的中年男性（平均年龄44 +/- 7岁）两种类型的心理任务，反应时间测试和心算测试，以确定结果是否与倾斜测试的结果相当。虽然这两项任务都显著增加了心率和血压，与倾斜测试的程度相同，但在反应时间测试期间，0.1 Hz频段的能量下降（从899 +/- 641降至482 +/- 430; P <0.01），但在心算测试期间没有变化。我们的结论是，0.1 Hz分量的响应是一个特定的任务现象。
It has been claimed that an increase in the 0.1-Hz component in power spectra of heart rate variability indicates an increased sympathetic tone. We tested 135 middle-aged unmedicated men (mean age 44 +/- 7 years) with two types of mental tasks, a reaction-time test and a mental arithmetic test, to determine whether the results were comparable with those from tilt tests. Although both tasks significantly increased the heart rate and blood pressure, to the same extent as the tilt tests, energy in the 0.1-Hz band decreased during the reaction-time test (from 899 +/- 641 to 482 +/- 430; P less than 0.01) yet was unchanged during the mental arithmetic test. We conclude that the response of the 0.1-Hz component is a task-specific phenomenon.