Abstract
Unstable gait is also a frequent problem in patients with neurological dysfunctions. It proves to be essential to develop methods of objective diagnostics of human mobility and early detection of defects which are often a result of more serious conditions. The aim of this research is to develop methods of evaluation of gait instability with open and covered eyes on a treadmill on the basis of selected kinematic quantities.
The study included stages during which the participant was walking on the treadmill with open and covered eyes. The distribution of feet pressure on the ground were recorded. These measurements were divided into stages for which basic kinematic values were determined, which characterized the gait and the displacement of the center of pressure in ML and AP direction. An analyses of gait stability was conducted in frequency domain on the basis of COP course and using the specially designed IGS index. For every direction averaged FFT charts and IGS indexes were determined.
Results show that covering the eyes of the participants increased cadence and decreased stride time and stride length. The frequency analysis indicated the presence of additional frequency components in the course of COP both in ML and AP direction.
The developed methodology of frequency analysis of COP displacement during gait can be used as a method for early detection of motor system disorders or as a method for objective assessment of the therapeutic progress.
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This work was supported by the Department of Biomechatronic, Faculty of Biomedical Engineering, Silesian university of Technology in Gliwice (department funds).
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Wodarski, P. et al. (2019). The Evaluation of Gait Strategy on a Treadmill Using a New IGS Index Based on Frequency Analysis of COP Course. In: Pietka, E., Badura, P., Kawa, J., Wieclawek, W. (eds) Information Technology in Biomedicine. ITIB 2019. Advances in Intelligent Systems and Computing, vol 1011. Springer, Cham. https://doi.org/10.1007/978-3-030-23762-2_47
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