Ghafari, T;
Ghafari, A;
Mani, AR;
Raoufy, MR;
(2017)
The controllability of cardiac rhythm in elderly.
Physiology and Pharmacology
, 21
(4)
pp. 260-265.
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Abstract
Introduction: Recent reports have shown that rare fluctuations in cardiac cycles are ‘forgotten’ quickly in healthy individuals and it is possible to quantify the “memory length” of a physiological time-series using an inverse statistical approach. Methods: In the present study, we assessed the effect of aging on memory length in cardiac rhythm. Results: There was a longer memory length in cardiac time-series of elderly subjects in comparison with younger adults for both decelerating and accelerating rare fluctuations in cardiac rhythm. Conclusion: The increased memory length of the cardiac time-series in elderly subjects may indicate reduced controllability of cardiovascular regulatory system.
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