Are ankle muscle responses in balance recovery hard-wired?

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The ankle joint muscles can contribute to balance during walking by modulating the center of pressure and ground reaction forces through an ankle moment. This is especially effective in the sagittal plane through ankle plantar- or dorsiflexion. If the ankle joints would be physically blocked to make an ankle strategy ineffective, there would be no functional contribution of these muscles to balance during walking, nor would these muscles generate afferent output regarding ankle joint rotation. Consequently, ankle muscle activation for the purpose of balance control would be expected to disappear. To investigate human balance control, we have performed an experiment in which subjects received anteroposterior pelvis perturbations during walking while the ankle joints could not contribute to the balance recovery. The latter was realized by physically blocking the ankle joints through a pair of modified ankle-foot orthoses. Here, we present the lower-limb muscle activity responses in reaction to these perturbations. Of particular interest are the tibialis anterior and gastrocnemius medialis muscles, as these could not contribute to the balance recovery through the ankle joint, nor encode muscle length changes caused by ankle joint rotation. Yet, these muscles showed long-latency responses approximately 100 ms after perturbation onset, even though the ankle joints were blocked. The response amplitudes were dependent on the perturbation magnitude and direction, as well as the state of the leg. The results suggest a centralized regulation of balance control involving supra-spinal neural structures, without the need for changes in ankle muscle proprioceptive information.

LanguageEnglish
Title of host publicationConverging Clinical and Engineering Research on Neurorehabilitation III
Subtitle of host publicationProceedings of the 4th International Conference on NeuroRehabilitation (ICNR2018), October 16-20, 2018, Pisa, Italy
EditorsLorenzo Masia, Silvestro Micera, Metin Akay, José L. Pons
Place of PublicationCham
PublisherSpringer
Pages287-290
Number of pages4
ISBN (Electronic)978-3-030-01845-0
ISBN (Print)978-3-030-01844-3
DOIs
Publication statusPublished - 1 Jan 2019
Event4th International Conference on Neurorehabilitation 2018 - Pisa, Italy
Duration: 16 Oct 201820 Oct 2018
Conference number: 4
http://www.icnr2018.org/

Publication series

NameBiosystems and Biorobotics
Volume21
ISSN (Print)2195-3562
ISSN (Electronic)2195-3570

Conference

Conference4th International Conference on Neurorehabilitation 2018
Abbreviated titleICNR 2018
CountryItaly
CityPisa
Period16/10/1820/10/18
Internet address

Fingerprint

Muscle
Recovery
Chemical activation

Cite this

Vlutters, M., van Asseldonk, E., & van der Kooij, H. (2019). Are ankle muscle responses in balance recovery hard-wired? In L. Masia, S. Micera, M. Akay, & J. L. Pons (Eds.), Converging Clinical and Engineering Research on Neurorehabilitation III: Proceedings of the 4th International Conference on NeuroRehabilitation (ICNR2018), October 16-20, 2018, Pisa, Italy (pp. 287-290). (Biosystems and Biorobotics; Vol. 21). Cham: Springer. https://doi.org/10.1007/978-3-030-01845-0_58
Vlutters, Mark ; van Asseldonk, Edwin ; van der Kooij, Herman. / Are ankle muscle responses in balance recovery hard-wired?. Converging Clinical and Engineering Research on Neurorehabilitation III: Proceedings of the 4th International Conference on NeuroRehabilitation (ICNR2018), October 16-20, 2018, Pisa, Italy. editor / Lorenzo Masia ; Silvestro Micera ; Metin Akay ; José L. Pons. Cham : Springer, 2019. pp. 287-290 (Biosystems and Biorobotics).
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title = "Are ankle muscle responses in balance recovery hard-wired?",
abstract = "The ankle joint muscles can contribute to balance during walking by modulating the center of pressure and ground reaction forces through an ankle moment. This is especially effective in the sagittal plane through ankle plantar- or dorsiflexion. If the ankle joints would be physically blocked to make an ankle strategy ineffective, there would be no functional contribution of these muscles to balance during walking, nor would these muscles generate afferent output regarding ankle joint rotation. Consequently, ankle muscle activation for the purpose of balance control would be expected to disappear. To investigate human balance control, we have performed an experiment in which subjects received anteroposterior pelvis perturbations during walking while the ankle joints could not contribute to the balance recovery. The latter was realized by physically blocking the ankle joints through a pair of modified ankle-foot orthoses. Here, we present the lower-limb muscle activity responses in reaction to these perturbations. Of particular interest are the tibialis anterior and gastrocnemius medialis muscles, as these could not contribute to the balance recovery through the ankle joint, nor encode muscle length changes caused by ankle joint rotation. Yet, these muscles showed long-latency responses approximately 100 ms after perturbation onset, even though the ankle joints were blocked. The response amplitudes were dependent on the perturbation magnitude and direction, as well as the state of the leg. The results suggest a centralized regulation of balance control involving supra-spinal neural structures, without the need for changes in ankle muscle proprioceptive information.",
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Vlutters, M, van Asseldonk, E & van der Kooij, H 2019, Are ankle muscle responses in balance recovery hard-wired? in L Masia, S Micera, M Akay & JL Pons (eds), Converging Clinical and Engineering Research on Neurorehabilitation III: Proceedings of the 4th International Conference on NeuroRehabilitation (ICNR2018), October 16-20, 2018, Pisa, Italy. Biosystems and Biorobotics, vol. 21, Springer, Cham, pp. 287-290, 4th International Conference on Neurorehabilitation 2018, Pisa, Italy, 16/10/18. https://doi.org/10.1007/978-3-030-01845-0_58

Are ankle muscle responses in balance recovery hard-wired? / Vlutters, Mark; van Asseldonk, Edwin; van der Kooij, Herman.

Converging Clinical and Engineering Research on Neurorehabilitation III: Proceedings of the 4th International Conference on NeuroRehabilitation (ICNR2018), October 16-20, 2018, Pisa, Italy. ed. / Lorenzo Masia; Silvestro Micera; Metin Akay; José L. Pons. Cham : Springer, 2019. p. 287-290 (Biosystems and Biorobotics; Vol. 21).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Vlutters M, van Asseldonk E, van der Kooij H. Are ankle muscle responses in balance recovery hard-wired? In Masia L, Micera S, Akay M, Pons JL, editors, Converging Clinical and Engineering Research on Neurorehabilitation III: Proceedings of the 4th International Conference on NeuroRehabilitation (ICNR2018), October 16-20, 2018, Pisa, Italy. Cham: Springer. 2019. p. 287-290. (Biosystems and Biorobotics). https://doi.org/10.1007/978-3-030-01845-0_58