標題: | Better Thoracoabdominal Synchrony in Abdominal Breathing: Evidence From Complementary Ensemble Empirical Mode Decomposition-Based Lissajous Figure Analysis |
作者: | Chen, Ya-Chen Hsiao, Tzu-Chien Chen, Jin-Long 分子醫學與生物工程研究所 資訊工程學系 友訊交大聯合研發中心 生醫電子轉譯研究中心 Institute of Molecular Medicine and Bioengineering Department of Computer Science D Link NCTU Joint Res Ctr Biomedical Electronics Translational Research Center |
關鍵字: | Abdominal Breathing;Thoracoabdominal Synchrony;Lissajous Figure;Complementary Ensemble Empirical Mode Decomposition |
公開日期: | 1-四月-2015 |
摘要: | Abdominal breathing (AB) is believed to be a healthier pattern of breathing than thoracic breathing (TB). However, the objective evidence is scanty. Thoracoabdominal synchrony could be evaluated by calculating the phase angle between rib cage and abdomen motion in the Lissajous figure. A lesser phase angle indicates a better thoracoabdominal synchrony. Complementary ensemble empirical mode decomposition (CEEMD) was recently developed to extract the main component in the nonlinear and non-stationary signals. This study was designed to compare the thoracoabdominal synchrony between AB and TB via a CEEMD-based Lissajous figure analysis. Twenty-nine healthy subjects [24 males and 5 females; age 22 (21-23) years, median (interquartile range)] were recruited to receive simultaneous respiratory inductive plethysmography recording of rib cage and abdomen motion during AB and TB respectively. The main components of rib cage and abdomen motion were extracted by CEEMD. These main components were used to plot the Lissajous figure and calculate the phase angle. Compared with TB, AB revealed a significant decrease (P < 0.001) in phase angle [AB 12.13 (8.70-15.76)degrees vs. TB 22.56 (17.59-26.35)degrees]. In conclusion, AB assumes a better thoracoabdominal synchrony than TB. This finding might help to explain why AB is a healthier pattern of breathing. In addition, the CEEMD-based Lissajous figure analysis could be an effective method for the evaluation of thoracoabdominal synchrony. |
URI: | http://dx.doi.org/10.1166/jmihi.2015.1406 http://hdl.handle.net/11536/124466 |
ISSN: | 2156-7018 |
DOI: | 10.1166/jmihi.2015.1406 |
期刊: | JOURNAL OF MEDICAL IMAGING AND HEALTH INFORMATICS |
起始頁: | 400 |
結束頁: | 405 |
顯示於類別: | 期刊論文 |