Reading multifractal spectra: Aging by multifractal analysis of heart rate
Reading multifractal spectra: Aging by multifractal analysis of heart rate
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DOI：
10.1209/0295-5075/94/68005
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发表时间：
2011-06-01
期刊：
影响因子：
1.8
通讯作者：
Zarczynska-Buchowiecka, M.
中科院分区：
文献类型：
--
作者：
Makowiec, D.;Rynkiewicz, A.;Zarczynska-Buchowiecka, M.
提出了多重分形性质的有效读取方法。该方法包括对给定信号的分析和对集成信号的分析。给出了一种实用的分离单分型信号和其他信号的方法。该方法应用于24小时心率间隔的心电图记录，以评估衰老对健康成人心脏自主调节的影响。采用多重分形分析方法对VLF波段心率变异性进行了评价。从单分形到多分形的转换是观察到白天和夜间的部分之间的系列在年轻的成年人组。随着年龄的增长，夜间信号的多重分形结构逐渐减弱。观察到的变化可能与控制心血管系统的中央机制的昼夜节律变化有关，心血管系统随着年龄的增长而受损。提出了自主调节功能年龄损害的指标。中国人民解放军版权所有
The method of effective reading of multifractal properties is proposed. The method consists in the analysis of a given signal together with the analysis of an integrated signal. A practical way to separate monofractal-type signals from other signals is given. The method is applied to 24-hour ECG recordings of RR-interbeat intervals to assess the effect of aging on autonomic regulation of the heart in healthy adults. Heart rate variability is evaluated by multifractal analysis in the VLF band. A switch from mono-to multifractality is observed between diurnal and nocturnal parts of series in the group of young adults. With aging the multifractal structure of nocturnal signals declines. The observed changes can be related to the circadian alternation in the central mechanisms controlling the cardiovascular system which becomes impaired with advance in age in human. Indices for age impairment of autonomic regulation are proposed. Copyright (C) EPLA, 2011