Title :
Circadian Rhythms of Spectral Components of Heart Rate Variability
Author :
Wu, G.Q. ; Shen, L.L. ; Tang, D.K. ; Zheng, D.A. ; Poon, C.-S.
Author_Institution :
Dept. of Mech. & Eng. Sci., Fudan Univ., Shanghai
fDate :
Aug. 30 2006-Sept. 3 2006
Abstract :
Circadian rhythms of heart rate variability have been widely studied in recent years. However, most previous reports described such rhythms in terms of normalized units of the low- and high-frequency (LF and HF) spectral components. In this study, we analyzed circadian rhythms of spectral components in absolute units and found unexpected results in normal subjects as well as coronary heart disease (CHD) and congestive heart failure (CHF) patient groups. The results indicate that the notion of sympathovagal balance needs to be re-evaluated
Keywords :
cardiovascular system; circadian rhythms; diseases; spectral analysis; absolute units; circadian rhythms; congestive heart failure patients; coronary heart disease subjects; heart rate variability; normal subjects; spectral components; sympathovagal balance; Cardiac disease; Circadian rhythm; Cities and towns; Failure analysis; Hafnium; Heart beat; Heart rate variability; Parasympathetic nervous system; Spectral analysis; USA Councils;
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2006.260595
