https://scholars.lib.ntu.edu.tw/handle/123456789/637938
標題: | Heart rate variability characterization in daily physical activities using wavelet analysis and multilayer fuzzy activity clustering | 作者: | Chan, Hsiao-Lung Fang, Shih-Chin Ko, Yu-Lin Lin, Ming-An HUI-HSUN HUANG Lin, Chun-Hsien |
關鍵字: | Discrete wavelet transform | Fuzzy clustering | Heart rate variability | Physical activity | 公開日期: | 一月-2006 | 卷: | 53 | 期: | 1 | 來源出版物: | IEEE transactions on bio-medical engineering | 摘要: | A portable data recorder was developed to parallel measure the electrocardiogram and body accelerations. A multilayer fuzzy clustering algorithm was proposed to classify the physical activity based on body accelerations. Discrete wavelet transform was incorporated to retrieve time-varying characteristics of heart rate variability under different physical activities. Nine healthy subjects were included to investigate activity-related heart rate variability during 24 h. The results showed that the heartbeat fluctuations in high frequencies were the greatest during lying and the smallest during standing. Moreover, very-low-frequency heartbeat fluctuations during low activity level (lying) were greater than during high activity level (nonlying). |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/637938 | ISSN: | 0018-9294 | DOI: | 10.1109/TBME.2005.859811 |
顯示於: | 醫學系 |
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