Directional variation of active and passive ankle static impedance

Patrick Ho, Hyunglae Lee, Hermano Igo Krebs, Neville Hogan

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

5 Scopus citations

Abstract

Though ankle mechanical impedance plays an important role in posture and locomotion, it has been inadequately characterized. Unlike previous studies, which confined themselves to measurements along the primary axes of the ankle in an isolated fashion, the study reported here characterized the static component of ankle impedance in two degrees of freedom. In addition, the effect of active muscle contraction on ankle static impedance was measured. We found that ankle static impedance varied significantly with direction under passive conditions. We further observed that, while muscle contraction increased the magnitude of ankle static impedance, its directional variation was essentially unchanged.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages53-55
Number of pages3
EditionPART A
ISBN (Print)9780791848920
DOIs
StatePublished - Jan 1 2010
Externally publishedYes
Event2009 ASME Dynamic Systems and Control Conference, DSCC2009 - Hollywood, CA, United States
Duration: Oct 12 2009Oct 14 2009

Publication series

NameProceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009
NumberPART A

Other

Other2009 ASME Dynamic Systems and Control Conference, DSCC2009
CountryUnited States
CityHollywood, CA
Period10/12/0910/14/09

ASJC Scopus subject areas

  • Control and Systems Engineering

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  • Cite this

    Ho, P., Lee, H., Krebs, H. I., & Hogan, N. (2010). Directional variation of active and passive ankle static impedance. In Proceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009 (PART A ed., pp. 53-55). (Proceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009; No. PART A). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/DSCC2009-2573