Inter and Intra-Limb Processes of Gait Control

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Taylor, Simon, Begg, Rezaul and Best, Russell (2001) Inter and Intra-Limb Processes of Gait Control. In: Proceedings of the 2nd Conference of the Victorian Chapter of the IEEE Engineering in Medicine and Biology Society: Biomedical Research in 2001. Monash University, Clayton, Victoria, pp. 222-226.


This paper investigates a method for characterising the symmetric status of gait and the inter and intra-limb relationship of gait control. Previous research shows fluctuations of intra-limb stride intervals to have long-range correlations indicating scale-free (fractal like) phenomena. The presence of this phenomena in gait, and a method for its identification (detrended fluctuation analysis) provides a new approach to gait analysis. A single, healthy young adult subject, completed a thirty-minute treadmill test. Minimum foot clearance values and the time interval between their occurrences were taken at these successive bilateral events. Using detrended fluctuation analysis, we computed α(self-similarity parameter), a measure of the degree to which a single value in a series of data is correlated with a previous and subsequent value over different time scales. The results demonstrate long-range correlations of intra-limb spatial and temporal parameters in both limbs. The computed selfsimilarity parameter (a) indicates a symmetric relationship between limbs for temporal processes of gait. However, a similar computation and comparison for spatial processes of gait reveal an asymmetric relationship. The inter-limb spatial relationship demonstrates long-range correlations. The investigation demonstrates a new method for classifying gait symmetry and has implications for furthering knowledge on the coordination processes of gait control.

Additional Information

Conference held at Monash University, Clayton Campus, Victoria.
February 19-20, 2001

Item type Book Section
Official URL
ISBN 095786860X
Subjects Historical > FOR Classification > 1106 Human Movement and Sports Science
Historical > Faculty/School/Research Centre/Department > Centre for Ageing, Rehabilitation, Exercise & Sport Science (CARES)
Keywords asymmetry, motor control, symmetry, inter-limb coordination dynamics, neurophysiological control process, white noise behaviour, Commonwealth Department of Health and Aged Care, CDHAC, minimum foot clearance, treadmill, gait analysis
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