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Type: Conference paper
Title: Joint symbolic dynamics as an effective approach to study the influence of respiratory phase on baroreflex function
Author: Kabir, M.
Voss, A.
Abbott, D.
Baumert, M.
Citation: Proceedings of the 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2013: pp.49-52
Publisher: IEEE
Publisher Place: USA
Issue Date: 2013
Series/Report no.: IEEE Engineering in Medicine and Biology Society Conference Proceedings
ISBN: 9781457702167
ISSN: 1557-170X
Conference Name: Annual International Conference of the IEEE Engineering in Medicine and Biology Society (35th : 2013 : Osaka, Japan)
Statement of
Muammar M. Kabir, Andreas Voss, Derek Abbott, and Mathias Baumert
Abstract: This study sought to employ a novel approach based on joint symbolic dynamics (JSD) to study the influence of respiratory phase on baroreflex function. We recorded electrocardiograms (ECG), blood pressure and respiration in 10 (5 male/5 female) healthy experienced athletes. For our analysis, time series of R-R intervals and systolic blood pressure were extracted, and respiratory phases were obtained using the Hilbert transform. Based on the changes between successive values, each series was transformed into binary symbol vectors, and words of length `2' were formed. From parallel analysis of the symbolic dynamics in the three time series, the relationship between respiratory phases and baroreflex function was quantified. We analysed baroreflex patterns via different word combinations for specific respiratory phases and observed that baroreflex patterns occurred at similar frequency during expiration, inspiration and phase transitions (25.0±14.4% vs. 33.4±19.5%, expiration-inspiration: 25.0±12.6% and inspiration-expiration: 22.1±17.4%, respectively). From this study, it appears that JSD provides a novel and efficient technique for the combined analysis of interactions between respiration, heart rate and blood pressure.
Rights: ©2013 IEEE
RMID: 0020130467
DOI: 10.1109/EMBC.2013.6609434
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Appears in Collections:Electrical and Electronic Engineering publications

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