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1/f spectrum slope of 24 hour heart rate variability signal in normal and hypertensive subjects

机译:24小时心率可变性信号的1 / F频谱斜率在正常和高血压患者中

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The power spectrum density of the heart rate beat to beat variability signal shows, in a frequency range of less than 0.01 Hz, a behaviour inversely proportional to frequency. This finding has been related to the chaotical component of the signal and the expression of the complexity of the heart rate control mechanisms. The authors tested the 1/f mathematical model on the 24 hour heart rate in 40 subjects, half normal and half young essential hypertensive. The authors found that 1/f slope is 1.12/spl plusmn/0.14 in the normal subjects and 1.24/spl plusmn/0.15 in the hypertensive ones (p0.02). The data suggest a loss of complexity in cardiovascular control in essential hypertension.
机译:心率击败的功率谱密度以击败可变性信号显示,频率范围小于0.01Hz,行为与频率成反比。该发现一直与信号的乱性分量和心率控制机制的复杂性的表达有关。作者在40个科目中的24小时心率下测试了1 / F的数学模型,半正常和半年青少年精神衰减。作者发现,在正常受试者中,1 / F斜率为1.12 / SPL PLUSMN / 0.14,高血压率为1.24 / SPL PLUSMN / 0.15(P> 0.02)。该数据表明在原发性高血压中心血管控制中的复杂性丧失。

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