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Clinics and Practice
Volume 3
Issue 2
10.4081/cp.2013.e30
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Clinics and Practice is published by MDPI from Volume 11 Issue 1 (2021). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with PAGEPress.
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Brief Report

Simple Method to Reduce the Effect of Patient Positioning Variation on Three-Dimensional Motion Analysis during Treadmill Gait

by
Shigeo Tanabe
1,*,
Eiichi Saitoh
2,
Kei Ohtsuka
1,
Toshio Teranishi
1,
Yutaka Tomita
3 and
Yoshihiro Muraoka
1,*
1
Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, Japan
2
Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Japan
3
Fujita Memorial Nanakuri Institute, Fujita Health University, Japan
*
Authors to whom correspondence should be addressed.
Clin. Pract. 2013, 3(2), e30; https://doi.org/10.4081/cp.2013.e30
Submission received: 10 July 2013 / Revised: 21 September 2013 / Accepted: 24 September 2013 / Published: 8 November 2013

Abstract

Recently, three-dimensional (3D) closed curve trajectories of markers placed at strategic body locations, called cyclograms or Lissajous-like graphs, are used for treadmill gait analysis. A simple method is presented to reduce the effect of patient positioning variation. After breaking down movement into three components (anterior-posterior, medial-lateral and superior-inferior), the time-series data and time-inverted data are serially concatenated. A fast Fourier transform (FFT) is done, and a high-pass filter (except 0 Hz) is applied to the anterior-posterior and medial-lateral components. Next an inverse FFT is executed, and the posterior half of the outcome, corresponding to time-inverted data, is deleted. The 3D closed curve is then reconstructed. Results showed that the proposed method was able to reduce the effect of patient positioning variation. Since the adjusted curve is simply a symbolized gait pattern, the method might be useful as an adjunct tool in observational gait analysis.
Keywords: gait analysis; gait trajectory; treadmill gait analysis; gait trajectory; treadmill

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MDPI and ACS Style

Tanabe, S.; Saitoh, E.; Ohtsuka, K.; Teranishi, T.; Tomita, Y.; Muraoka, Y. Simple Method to Reduce the Effect of Patient Positioning Variation on Three-Dimensional Motion Analysis during Treadmill Gait. Clin. Pract. 2013, 3, e30. https://doi.org/10.4081/cp.2013.e30

AMA Style

Tanabe S, Saitoh E, Ohtsuka K, Teranishi T, Tomita Y, Muraoka Y. Simple Method to Reduce the Effect of Patient Positioning Variation on Three-Dimensional Motion Analysis during Treadmill Gait. Clinics and Practice. 2013; 3(2):e30. https://doi.org/10.4081/cp.2013.e30

Chicago/Turabian Style

Tanabe, Shigeo, Eiichi Saitoh, Kei Ohtsuka, Toshio Teranishi, Yutaka Tomita, and Yoshihiro Muraoka. 2013. "Simple Method to Reduce the Effect of Patient Positioning Variation on Three-Dimensional Motion Analysis during Treadmill Gait" Clinics and Practice 3, no. 2: e30. https://doi.org/10.4081/cp.2013.e30

APA Style

Tanabe, S., Saitoh, E., Ohtsuka, K., Teranishi, T., Tomita, Y., & Muraoka, Y. (2013). Simple Method to Reduce the Effect of Patient Positioning Variation on Three-Dimensional Motion Analysis during Treadmill Gait. Clinics and Practice, 3(2), e30. https://doi.org/10.4081/cp.2013.e30

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