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Physica A 302 (2001) 138147 www.elsevier.com/locate/physa

Summary: Physica A 302 (2001) 138147
When human walking becomes random walking:
fractal analysis and modeling of
gait rhythm uctuations
Je rey M. Hausdor a;
, Yosef Ashkenazyb
, Chang-K. Penga
Plamen Ch. Ivanova;b
, H. Eugene Stanleyb
, Ary L. Goldbergera
aBeth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
bCenter for Polymer Studies and Department of Physics, Boston University, Boston, MA 02215, USA
We present a random walk, fractal analysis of the stride-to-stride uctuations in the human gait
rhythm. The gait of healthy young adults is scale-free with long-range correlations extending over
hundreds of strides. This fractal scaling changes characteristically with maturation in children
and older adults and becomes almost completely uncorrelated with certain neurologic diseases.
Stochastic modeling of the gait rhythm dynamics, based on transitions between di erent "neural


Source: Ashkenazy, Yossi "Yosef" - Department of Solar Energy and Environmental Physics, Jacob Blaustein Institutes for Desert Research,Ben-Gurion University of the Negev
Harvard University, Margret & H. A. Rey Institute for Nonlinear Dynamics in Medicine
Stanley, H. Eugene - Department of Physics, Boston University


Collections: Biology and Medicine; Computer Technologies and Information Sciences; Environmental Management and Restoration Technologies; Materials Science; Physics