A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait

Ronald C. van ’t Veld; S. S. Fricke; Ander Vallinas Prieto; Arvid Q.L. Keemink; Alfred C. Schouten; H. van der Kooij; E. H.F. van Asseldonk

doi:10.1007/978-3-030-70316-5_84

A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait

Ronald C. van ’t Veld^*, S. S. Fricke, Ander Vallinas Prieto, Arvid Q.L. Keemink, Alfred C. Schouten, H. van der Kooij, E. H.F. van Asseldonk

^*Corresponding author for this work

Biomechatronics & Human-Machine Control

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific › peer-review

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Abstract

Joint impedance plays an important role in postural control and movement. However, current experimental knowledge on lower limb impedance during gait is limited to the ankle joint. We designed the LOwer limb PERturbator (LOPER) aimed to assess knee and hip joint impedance during gait. The LOPER applies force perturbations with a 39 Hz bandwidth, tested on a free-hanging leg. In minimal impedance mode, peak interaction forces during walking are low (< 5 N). Also, this mode has a negligible effect on the gait pattern, as it is smaller than the within-subject variability during normal walking. In short, the LOPER is a transparent device able to elicit a clear response at both hip and knee joints to investigate lower limb dynamics. A second motor added to the LOPER could improve isolation of the perturbation contribution to knee and hip dynamics. People with neurological disorders can benefit from knowledge of joint impedance during gait through improved biomimetic devices and clinical decision making.

Original language	English
Title of host publication	Converging Clinical and Engineering Research on Neurorehabilitation IV
Subtitle of host publication	Proceedings of the 5th International Conference on Neurorehabilitation (ICNR2020), October 13–16, 2020
Editors	Diego Torricelli, Metin Akay, Jose L. Pons
Publisher	Springer
Pages	525-529
ISBN (Electronic)	978-3-030-70316-5
ISBN (Print)	978-3-030-70315-8
DOIs	https://doi.org/10.1007/978-3-030-70316-5_84
Publication status	Published - 2022
Event	ICNR 2020: International Conference on NeuroRehabilitation (Virtual) - Duration: 13 Oct 2020 → 16 Oct 2020

Publication series

Name	Biosystems and Biorobotics
Volume	28
ISSN (Print)	2195-3562
ISSN (Electronic)	2195-3570

Conference

Conference	ICNR 2020: International Conference on NeuroRehabilitation (Virtual)
Period	13/10/20 → 16/10/20

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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Cite this

van ’t Veld, R. C., Fricke, S. S., Prieto, A. V., Keemink, A. Q. L., Schouten, A. C., van der Kooij, H., & van Asseldonk, E. H. F. (2022). A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait. In D. Torricelli, M. Akay, & J. L. Pons (Eds.), Converging Clinical and Engineering Research on Neurorehabilitation IV: Proceedings of the 5th International Conference on Neurorehabilitation (ICNR2020), October 13–16, 2020 (pp. 525-529). (Biosystems and Biorobotics; Vol. 28). Springer. https://doi.org/10.1007/978-3-030-70316-5_84

van ’t Veld, Ronald C. ; Fricke, S. S. ; Prieto, Ander Vallinas et al. / A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait. Converging Clinical and Engineering Research on Neurorehabilitation IV: Proceedings of the 5th International Conference on Neurorehabilitation (ICNR2020), October 13–16, 2020. editor / Diego Torricelli ; Metin Akay ; Jose L. Pons. Springer, 2022. pp. 525-529 (Biosystems and Biorobotics).

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abstract = "Joint impedance plays an important role in postural control and movement. However, current experimental knowledge on lower limb impedance during gait is limited to the ankle joint. We designed the LOwer limb PERturbator (LOPER) aimed to assess knee and hip joint impedance during gait. The LOPER applies force perturbations with a 39 Hz bandwidth, tested on a free-hanging leg. In minimal impedance mode, peak interaction forces during walking are low (< 5 N). Also, this mode has a negligible effect on the gait pattern, as it is smaller than the within-subject variability during normal walking. In short, the LOPER is a transparent device able to elicit a clear response at both hip and knee joints to investigate lower limb dynamics. A second motor added to the LOPER could improve isolation of the perturbation contribution to knee and hip dynamics. People with neurological disorders can benefit from knowledge of joint impedance during gait through improved biomimetic devices and clinical decision making.",

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note = "Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.; ICNR 2020: International Conference on NeuroRehabilitation (Virtual) ; Conference date: 13-10-2020 Through 16-10-2020",

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van ’t Veld, RC, Fricke, SS, Prieto, AV, Keemink, AQL, Schouten, AC , van der Kooij, H & van Asseldonk, EHF 2022, A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait. in D Torricelli, M Akay & JL Pons (eds), Converging Clinical and Engineering Research on Neurorehabilitation IV: Proceedings of the 5th International Conference on Neurorehabilitation (ICNR2020), October 13–16, 2020. Biosystems and Biorobotics, vol. 28, Springer, pp. 525-529, ICNR 2020: International Conference on NeuroRehabilitation (Virtual), 13/10/20. https://doi.org/10.1007/978-3-030-70316-5_84

A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait. / van ’t Veld, Ronald C.; Fricke, S. S.; Prieto, Ander Vallinas et al.
Converging Clinical and Engineering Research on Neurorehabilitation IV: Proceedings of the 5th International Conference on Neurorehabilitation (ICNR2020), October 13–16, 2020. ed. / Diego Torricelli; Metin Akay; Jose L. Pons. Springer, 2022. p. 525-529 (Biosystems and Biorobotics; Vol. 28).

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific › peer-review

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van ’t Veld RC, Fricke SS, Prieto AV, Keemink AQL, Schouten AC , van der Kooij H et al. A Transparent Lower Limb Perturbator to Investigate Joint Impedance During Gait. In Torricelli D, Akay M, Pons JL, editors, Converging Clinical and Engineering Research on Neurorehabilitation IV: Proceedings of the 5th International Conference on Neurorehabilitation (ICNR2020), October 13–16, 2020. Springer. 2022. p. 525-529. (Biosystems and Biorobotics). doi: 10.1007/978-3-030-70316-5_84