Age-related alterations in the fractal scaling of cardiac interbeat interval dynamics.

  title={Age-related alterations in the fractal scaling of cardiac interbeat interval dynamics.},
  author={Nikhil Iyengar and Chung-Kang Peng and Raymond J. Morin and Ary L. Goldberger and Lewis A. Lipsitz},
  journal={The American journal of physiology},
  volume={271 4 Pt 2},
We postulated that aging is associated with disruption in the fractallike long-range correlations that characterize healthy sinus rhythm cardiac interval dynamics. Ten young (21-34 yr) and 10 elderly (68-81 yr) rigorously screened healthy subjects underwent 120 min of continuous supine resting electrocardiographic recording. We analyzed the interbeat interval time series using standard time and frequency domain statistics and using a fractal measure, detrended fluctuation analysis, to quantify… 

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