Evaluating human motor function of lower limbs in periodic motion during pedaling exercise

Tomohiro Miyazaki, Fumi Seto, Masashi Konyo, Satoshi Tadokoro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The purpose of this study is to establish a quantitative method that can evaluate the motor function of human lower limbs in dynamic situations. As an index of motor function, we focus on the mechanical impedance characteristics of the lower limbs. By controlling these characteristics, humans can improve motion stability and adapt their movement to disturbances in the environment. In this paper, we propose a method that can estimate the impedance characteristics of the lower limbs of a human subject applying torque perturbations during a pedaling exercise. To improve the accuracy of the proposed estimation method, the effects of inertia and gravity in the measurement data were considered by representing the lower limbs by a multi-link model. Experiments were performed in two participants to estimate the stiffness and viscosity at different phases of the periodic movement. The distributions of these parameters showed symmetric properties for both legs in a pedaling cycle-a tendency that was observed in both participants. This agreement suggests that our method could extract a component of human motor control strategy that adjust mechanical impedances during pedaling exercises.

Original languageEnglish
Title of host publicationIROS Hamburg 2015 - Conference Digest
Subtitle of host publicationIEEE/RSJ International Conference on Intelligent Robots and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2216-2223
Number of pages8
ISBN (Electronic)9781479999941
DOIs
Publication statusPublished - 2015 Dec 11
EventIEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2015 - Hamburg, Germany
Duration: 2015 Sep 282015 Oct 2

Publication series

NameIEEE International Conference on Intelligent Robots and Systems
Volume2015-December
ISSN (Print)2153-0858
ISSN (Electronic)2153-0866

Other

OtherIEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2015
CountryGermany
CityHamburg
Period15/9/2815/10/2

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Computer Vision and Pattern Recognition
  • Computer Science Applications

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    Miyazaki, T., Seto, F., Konyo, M., & Tadokoro, S. (2015). Evaluating human motor function of lower limbs in periodic motion during pedaling exercise. In IROS Hamburg 2015 - Conference Digest: IEEE/RSJ International Conference on Intelligent Robots and Systems (pp. 2216-2223). [7353674] (IEEE International Conference on Intelligent Robots and Systems; Vol. 2015-December). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IROS.2015.7353674