Coordination in gait: Demonstration of a spectral approach

Williams, Genevieve K. R. and Vicinanza, Domenico (2018) Coordination in gait: Demonstration of a spectral approach. Journal of Sports Sciences, 36 (15). pp. 1768-1775. ISSN 1466-447X

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Many important notions in Life Sciences are linked with the idea of cycles, periodicity, fluctuations and transitions. The aim of this paper is to use spectral analysis in a unique way to study and quantify whole body coordination during gait. A participant walked at 3 km/h and ran at 15 km/h on a treadmill for 2 minutes. Position of the approximate center of rotation of the toe, ankle, knee, hip, shoulder, elbow and wrist, and heel, PSIS and head were collected at 100 Hz using CODAmotion analysis system. Fast Fourier Transform was performed on x-coordinate data of the 1) knee marker; 2) 4 markers attached to the free lower limb (toe, ankle, heel and knee); 3) left and right free lower limbs; 4) whole body (all markers). Gait is described by a largely harmonic and resonant oscillator that operates unilateral free limbs at the stride frequency, and axial regions at the step frequency. Running is described by a more harmonic and resonant oscillating structure than walking, with a 3 times higher Q factor and 47% lower Inharmonicity Index. This method is presented as a way to capture global dynamics of our complex multi-segment system, and presents a novel application of spectral analysis to study coordination in multiple oscillators.

Item Type: Journal Article
Keywords: gait analysis, dynamical systems theory, phase relations, coherence, biomechanics
Faculty: ARCHIVED Faculty of Science & Technology (until September 2018)
Depositing User: Domenico Vicinanza
Date Deposited: 07 Mar 2018 13:59
Last Modified: 31 Jan 2022 14:15

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