Speed influences on the scaling behavior of gait cycle fluctuations during treadmill running

Kimberlee Jordan, John H. Challis, Karl M. Newell

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

The current study examined the temporal structure of gait cycle fluctuations in running. Participants ran at 80%, 90%, 100%, 110% and 120% of preferred running speed for 8 min trials. Kinematic and kinetic gait cycle variables were generated from ground reaction force data. Mean, SD and CV of the kinematic and kinetic variables changed linearly with speed, whereas U-shaped functions were found for the scaling exponent α in 5 of the 8 variables investigated. Our findings reveal that long range correlations are present in both kinetic and kinematic variables of the gait cycle. The dependent structure of the stride interval is reduced at preferred running speed and this is hypothesized to be related to the enhanced stability and flexibility of this gait speed.

Original languageEnglish (US)
Pages (from-to)87-102
Number of pages16
JournalHuman Movement Science
Volume26
Issue number1
DOIs
StatePublished - Feb 1 2007

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology

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