Revisiting nonlinearity of heart rate variability in healthy aging.

ABSTRACT: Aging is commonly regarded as a physiological process in which the dynamic complexity of physiological time series and organ systems is gradually lost. This notion is derived from the identification of a decline of nonlinear measures with the advance of aging. However, additional research on cardiovascular control studied through heart rate variability (HRV), i.e., the instantaneous changes in heart rate, shows that despite the constriction of its statistical distribution, the nonlinear organization remains present in advanced age. Here, we used surrogate data testing to investigate the presence of nonlinear information in HRV time series from a publicly available database of 1121 healthy human subjects from 18 to 92 years old. We also studied the influence of basic clinical features, such

SUBMITTER: Calderon-Juarez M 

PROVIDER: S-EPMC10425345 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature