Aging reduces complexity of heart rate variability assessed by conditional entropy and symbolic analysis

• Published in: Internal and emergency medicine Vol. 7; no. 3; pp. 229 - 235
• Main Authors: Takahashi, Anielle C. M., Porta, Alberto, Melo, Ruth C., Quitério, Robison J., da Silva, Ester, Borghi-Silva, Audrey, Tobaldini, Eleonora, Montano, Nicola, Catai, Aparecida M.
• Format: Journal Article
• Language: English
• Published: Milan Springer Milan 01.06.2012; Springer Nature B.V
• Subjects: Adult; Age Factors; Aged; Aging - physiology; Autonomic Nervous System; Entropy; Health Status Indicators; Heart Rate - physiology; Humans; Im - Original; Internal Medicine; Male; Medicine; Medicine & Public Health; Middle Aged; Nonlinear Dynamics; Risk; Statistics, Nonparametric; Young Adult; Aging; Symbolic analysis; Conditional entropy; Heart rate variability; Nonlinear analysis
• ISSN: 1828-0447; 1970-9366; 1970-9366
• DOI: 10.1007/s11739-011-0512-z

Increasing age is associated with a reduction in overall heart rate variability as well as changes in complexity of physiologic dynamics. The aim of this study was to verify if the alterations in autonomic modulation of heart rate caused by the aging process could be detected by Shannon entropy (SE)...