Document Detail

Correlation differences in heartbeat fluctuations during rest and exercise.
MedLine Citation:
PMID:  12513330     Owner:  NLM     Status:  MEDLINE    
We study the heartbeat activity of healthy individuals at rest and during exercise. We focus on correlation properties of the intervals formed by successive peaks in the pulse wave and find significant scaling differences between rest and exercise. For exercise the interval series is anticorrelated at short-time scales and correlated at intermediate-time scales, while for rest we observe the opposite crossover pattern--from strong correlations in the short-time regime to weaker correlations at larger scales. We also suggest a physiologically motivated stochastic scenario to provide an intuitive explanation of the scaling differences between rest and exercise.
Roman Karasik; Nir Sapir; Yosef Ashkenazy; Plamen Ch Ivanov; Itzhak Dvir; Peretz Lavie; Shlomo Havlin
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.     Date:  2002-12-12
Journal Detail:
Title:  Physical review. E, Statistical, nonlinear, and soft matter physics     Volume:  66     ISSN:  1539-3755     ISO Abbreviation:  Phys Rev E Stat Nonlin Soft Matter Phys     Publication Date:  2002 Dec 
Date Detail:
Created Date:  2003-01-06     Completed Date:  2003-05-07     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101136452     Medline TA:  Phys Rev E Stat Nonlin Soft Matter Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  062902     Citation Subset:  IM    
Department of Physics and Gonda-Goldschmied Medical Diagnostic Research Center, Bar-Ilan University, Ramat-Gan 52900, Israel.
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MeSH Terms
Biophysical Phenomena
Exercise Test
Heart Rate / physiology*
Physical Exertion*
Time Factors
Grant Support

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