Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects

Detrended Fluctuation Analysis (DFA) aims to quantify the fractal correlation properties in nonstationary time series, and it has successfully been applied in the assessment of the Heart Rate Variability (HRV) for cardiac risk stratification purposes. However the physiological meaning of DFA indices...

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Detalhes bibliográficos
Autores: Barquero-Pérez, Óscar, Marqués de Sa, J, Rojo-Álvarez, José Luis, Goya Esteban, R
Formato: artículo
Fecha de publicación:2009
País:España
Recursos:Universidad Rey Juan Carlos
Repositorio:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
OAI Identifier:oai:burjcdigital.urjc.es:10115/2188
Acesso em linha:http://hdl.handle.net/10115/2188
Access Level:acceso abierto
Palavra-chave:Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
3205.01 Cardiología
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oai_identifier_str oai:burjcdigital.urjc.es:10115/2188
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spelling Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure SubjectsBarquero-Pérez, Óscar Marqués de Sa, JRojo-Álvarez, José LuisGoya Esteban, RTelecomunicaciones3325 Tecnología de las Telecomunicaciones3205.01 CardiologíaDetrended Fluctuation Analysis (DFA) aims to quantify the fractal correlation properties in nonstationary time series, and it has successfully been applied in the assessment of the Heart Rate Variability (HRV) for cardiac risk stratification purposes. However the physiological meaning of DFA indices and its relation with aging have not yet been completely established. Given that a loss of complexity in the physiological regulation of elderly subjects has been reported in the literature, we hypothesized that DFA indices could be modified by aging. In this work we computed the Hurst exponent (estimated using DFA method) and DFA indices alfa1 and alfa2 to assess the HRV in healthy and Congestive Heart Failure (CHF) subjects, and we studied the dependence of these indices on aging for both healthy and CHF subjects. We found that only alfa2 and Hurst exponent, and only in the case of healthy subjects, have significant discrimination capability to distinguish between young and elderly groups, and also that these indices have a steady increase with aging. Therefore, we can conclude that the loss of complexity due to aging can be quantified by changes in the values of alfa2 and Hurst exponent.Teoría de la Señal y Comunicaciones200920092009info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10115/2188reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlosinstname:Universidad Rey Juan CarlosInglésInglésinfo:eu-repo/semantics/openAccessoai:burjcdigital.urjc.es:10115/21882026-06-24T12:48:17Z
dc.title.none.fl_str_mv Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
title Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
spellingShingle Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
Barquero-Pérez, Óscar
Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
3205.01 Cardiología
title_short Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
title_full Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
title_fullStr Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
title_full_unstemmed Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
title_sort Changes in Detrended Fluctuation Indices with Aging in Healthy and Congestive Heart Failure Subjects
dc.creator.none.fl_str_mv Barquero-Pérez, Óscar
Marqués de Sa, J
Rojo-Álvarez, José Luis
Goya Esteban, R
author Barquero-Pérez, Óscar
author_facet Barquero-Pérez, Óscar
Marqués de Sa, J
Rojo-Álvarez, José Luis
Goya Esteban, R
author_role author
author2 Marqués de Sa, J
Rojo-Álvarez, José Luis
Goya Esteban, R
author2_role author
author
author
dc.subject.none.fl_str_mv Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
3205.01 Cardiología
topic Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
3205.01 Cardiología
description Detrended Fluctuation Analysis (DFA) aims to quantify the fractal correlation properties in nonstationary time series, and it has successfully been applied in the assessment of the Heart Rate Variability (HRV) for cardiac risk stratification purposes. However the physiological meaning of DFA indices and its relation with aging have not yet been completely established. Given that a loss of complexity in the physiological regulation of elderly subjects has been reported in the literature, we hypothesized that DFA indices could be modified by aging. In this work we computed the Hurst exponent (estimated using DFA method) and DFA indices alfa1 and alfa2 to assess the HRV in healthy and Congestive Heart Failure (CHF) subjects, and we studied the dependence of these indices on aging for both healthy and CHF subjects. We found that only alfa2 and Hurst exponent, and only in the case of healthy subjects, have significant discrimination capability to distinguish between young and elderly groups, and also that these indices have a steady increase with aging. Therefore, we can conclude that the loss of complexity due to aging can be quantified by changes in the values of alfa2 and Hurst exponent.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10115/2188
url http://hdl.handle.net/10115/2188
dc.language.none.fl_str_mv Inglés
Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
instname:Universidad Rey Juan Carlos
instname_str Universidad Rey Juan Carlos
reponame_str BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
collection BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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