Influences of exercise and age on heart sound chaotic characteristics
CHENG Xiefeng1,2, YAN Zhi1, MA Yong3, ZHANG Xuejun1,2, HUANG Liya1,2
1. College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
2. National and Local Joint Engineering Laboratory of RF Integration and Technology Micro-Assembly Technology, Nanjing 210003, China;
3. School of Computer Science, Nanjing University of Science and Technology, Nanjing 210094, China
Abstract：Here, the chaotic characteristics of heart sound influenced by exercise and age were discussed. Heart sound was a kind of non-stationary and nonlinear signals with typical chaotic characteristics. A homemade shoulder belt heart sound-sampling device was used to collect heart sound signals under different movement states and different ages, then they were reconstructed in phase space, the chaotic attractor's of heart sound signals were given under the states of resting, in exercise and after exercise. The effects of exercise and age on chaotic characteristics of heart sound signals were discussed and analyzing the laws of heart sound correlation dimension was focused on. The test results showed that ① the correlation dimensions of heart sound before exercise, in exercise and after exercise have obvious differences, long term exercise makes the chaotic characteristic parameter of heart sound approach into a stable level; ② with increase in age, due to the effects of human cardiovascular system growing older and pathological murmurs, the correlation dimension of heart sound decreases; growing older is a process of chaotic characteristics of heart sound gradually becoming zero.
成谢锋1，2， 严誌1， 马勇3，张学军1，2，黄丽亚1，2. 运动与年龄对心音混沌特性影响规律的研究[J]. 振动与冲击, 2017, 36(1): 175-180.
CHENG Xiefeng1,2, YAN Zhi1, MA Yong3, ZHANG Xuejun1,2, HUANG Liya1,2. Influences of exercise and age on heart sound chaotic characteristics. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(1): 175-180.
[1] 陈天华，韩立群，唐海滔 心音信号分析方法及应用性研究 2009 北京工商大学学报(自然科学学报) 27 35
Chen T H,Han L Q,Tang H T Heart sound signal analysis method and applied research 2009 Journal of Beijing Technology and Business University(Natural Science Edition). 27 35.
[2] Glass L. Introduction to controversial topics in nonlinear science: is the normal heart rate chaotic? [J]. Chaos,2009, 19(2):28501-1~25801-4.
[3] 丁晓蓉，郭兴明，钟丽莎，肖守中 基于非线性混沌的心律失常心音信号分析 2012 生物医学工程学杂志 05 810
Ding X R,Guo X M,Zhong L S,Xiao S Z Based on Nonlinear Chaotic arrhythmia heart sound signal analysis 2012 Journal of
Biomedical Engineering. 05 810.
[4] Ning Xinbao, Bian Chunhua, Wang Jun. Research progress in nonlinear analysis of heart electric activities [J]. Chinese Science Bulletin, 2006, 51(4): 385-393.
[5] 杨小冬 2012 ECG信号非线性分析及其应用 (北京：科学出版社).
Yang X D 2012 ECG XIN HAO YU FEI XIAN XING FEN XI JI QI YING YONG（改为‘Nonlinear Signal Analysis and Application’）. (Beijing:Science Press).
[6] 赵进军，张颖，李为民 心脏电活动的非线性分析用于心血管疾病的诊断及危险预测 2008 心血管病学进展 29 91.
Zhao J J,Zhang Y,Li W M Nonlinear Analysis of the electrical activity of the heart for diagnosis and risk prediction of cardiovascular disease 2008 Advances in Cardiovascular Diseases. 29 91 .
[7] Nakamura Y, Yamamoto Y, Muraoka I .Autonomic control of hear t rate during physical exercise , fractal dimension of heart rate variability .J Appl Phy siol,1993;14(2):875- 881.
[8] 步斌，王爱华，韩海军等 心力变异性在运动机能评定中的应用基础 2010 生物医学工程学杂志27 716.
Bu B,Wang A H,Han H et al Basic of effort variability in assessment of motor function 2010 Journal of Biomedical Engineering. 27 716 .
[9] 李霞，康天良，全海英等 基于关联维数的运动心率变异信号研究 生物医学工程学杂志 2009 963.
Li X,Kang T L,Quan H et al Research on exercise heart rate variability signal based on correlation dimension 2009 Journal of Biomedical Engineering 936.
[10] Beckers F. Aging and nonlinear heart rate control in a healthy population.[J]. Ajp Heart & Circulatory Physiology, 2006, 290(6).
[11] 罗传文 250步混沌强度解析混沌特征及其在心率研究中的应用 物理学报 2007 56 6282.
Luo Z W Chaotic characteristic interperted by 250 step chaometry and its applying to the heart rate 2007 Acta Physica Sinica. 56 6282.
[12] 吕金虎，陆君安，陈士华 2005 混沌时间序列分析及其应用（武汉：武汉大学出版社）第93页至109
LV J H,LU J A,CHEN S H 2005 HUN DUN SHI JIAN XU LIE FEN XI JI Q YING YONG (Wuhan:Wuhan University Press) p93-109.
[13] 成谢锋， 张正 一种双正交心音小波的构造方法 2013 物理学报 62 168701
Cheng X F, Zhang Z Constructor of a biorthogonal wavelet heart sound 2013 Acta Physica Sinica. 62 168701.
[14] Goldberger AL; Amaral LA; Hausdorff JM; Ivanov PCh; Peng CK; Stanley HE. Fractal dynamics in physiology: Alterations with disease and aging[J]. Proceedings of the National Academy of Sciences, 2002, 99(4):2466-2472.
[15] http://wenwen.sogou.com/z/q270913157.htm
