Publication

Responses of human ankle muscles to mediolateral balance perturbations during walking

Hof, A. L. & Duysens, J., Feb-2018, In : Human Movement Science. 57, p. 69-82 14 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Hof, A. L., & Duysens, J. (2018). Responses of human ankle muscles to mediolateral balance perturbations during walking. Human Movement Science, 57, 69-82. https://doi.org/10.1016/j.humov.2017.11.009

Author

Hof, A L ; Duysens, J. / Responses of human ankle muscles to mediolateral balance perturbations during walking. In: Human Movement Science. 2018 ; Vol. 57. pp. 69-82.

Harvard

Hof, AL & Duysens, J 2018, 'Responses of human ankle muscles to mediolateral balance perturbations during walking' Human Movement Science, vol. 57, pp. 69-82. https://doi.org/10.1016/j.humov.2017.11.009

Standard

Responses of human ankle muscles to mediolateral balance perturbations during walking. / Hof, A L; Duysens, J.

In: Human Movement Science, Vol. 57, 02.2018, p. 69-82.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Hof AL, Duysens J. Responses of human ankle muscles to mediolateral balance perturbations during walking. Human Movement Science. 2018 Feb;57:69-82. https://doi.org/10.1016/j.humov.2017.11.009


BibTeX

@article{d145cd4c132a49678338a2d4e463b994,
title = "Responses of human ankle muscles to mediolateral balance perturbations during walking",
abstract = "During walking our balance is maintained by muscle action. In part these muscle actions automatically respond to the imbalance. This paper considers responses to balance perturbations in muscles around the ankle, peroneus longus (PL), tibialis anterior (TA) and soleus (SO). It is investigated if their action is related to previously observed balance mechanisms: the 'braking reaction' and the mediolateral ankle strategy. Subjects walked on a treadmill and received pushes to the left and pulls to the right in various phases of the gait cycle. Muscle actions were divided into medium latency R1 (100-150 ms), long latency R2 (170-250 ms), and late action R3 (270-350 ms). Short latency responses, before 100 ms, were not observed but later responses were prominent. With inward perturbations (e.g. pushes to the left shortly before or during stance of the right foot) responses in RPL were seen. The forward roll-over of the CoP was briefly stalled in mid stance, so that the heel was not lifted. Stance was shortened. With outward perturbations, pushes to the left shortly before or during stance of the left foot, responses in all three muscles, LTA, LSO, and LPL were seen. Our interpretation is that these muscle activations induce a 'braking reaction' but could also contribute to the 'mediolateral ankle strategy'. The resultant balance correction is small but fast, and so diminishes the need for later corrections by the stepping strategy.",
keywords = "Journal Article, CAT, DISPLACEMENT, LATERAL BALANCE, SUPPORT SURFACE, FOOT PLACEMENT, FRONTAL PLANE, GAIT, PRESSURE, REFLEX, STANCE",
author = "Hof, {A L} and J Duysens",
note = "Copyright {\circledC} 2017 Elsevier B.V. All rights reserved.",
year = "2018",
month = "2",
doi = "10.1016/j.humov.2017.11.009",
language = "English",
volume = "57",
pages = "69--82",
journal = "Human Movement Science",
issn = "0167-9457",
publisher = "ELSEVIER SCIENCE BV",

}

RIS

TY - JOUR

T1 - Responses of human ankle muscles to mediolateral balance perturbations during walking

AU - Hof, A L

AU - Duysens, J

N1 - Copyright © 2017 Elsevier B.V. All rights reserved.

PY - 2018/2

Y1 - 2018/2

N2 - During walking our balance is maintained by muscle action. In part these muscle actions automatically respond to the imbalance. This paper considers responses to balance perturbations in muscles around the ankle, peroneus longus (PL), tibialis anterior (TA) and soleus (SO). It is investigated if their action is related to previously observed balance mechanisms: the 'braking reaction' and the mediolateral ankle strategy. Subjects walked on a treadmill and received pushes to the left and pulls to the right in various phases of the gait cycle. Muscle actions were divided into medium latency R1 (100-150 ms), long latency R2 (170-250 ms), and late action R3 (270-350 ms). Short latency responses, before 100 ms, were not observed but later responses were prominent. With inward perturbations (e.g. pushes to the left shortly before or during stance of the right foot) responses in RPL were seen. The forward roll-over of the CoP was briefly stalled in mid stance, so that the heel was not lifted. Stance was shortened. With outward perturbations, pushes to the left shortly before or during stance of the left foot, responses in all three muscles, LTA, LSO, and LPL were seen. Our interpretation is that these muscle activations induce a 'braking reaction' but could also contribute to the 'mediolateral ankle strategy'. The resultant balance correction is small but fast, and so diminishes the need for later corrections by the stepping strategy.

AB - During walking our balance is maintained by muscle action. In part these muscle actions automatically respond to the imbalance. This paper considers responses to balance perturbations in muscles around the ankle, peroneus longus (PL), tibialis anterior (TA) and soleus (SO). It is investigated if their action is related to previously observed balance mechanisms: the 'braking reaction' and the mediolateral ankle strategy. Subjects walked on a treadmill and received pushes to the left and pulls to the right in various phases of the gait cycle. Muscle actions were divided into medium latency R1 (100-150 ms), long latency R2 (170-250 ms), and late action R3 (270-350 ms). Short latency responses, before 100 ms, were not observed but later responses were prominent. With inward perturbations (e.g. pushes to the left shortly before or during stance of the right foot) responses in RPL were seen. The forward roll-over of the CoP was briefly stalled in mid stance, so that the heel was not lifted. Stance was shortened. With outward perturbations, pushes to the left shortly before or during stance of the left foot, responses in all three muscles, LTA, LSO, and LPL were seen. Our interpretation is that these muscle activations induce a 'braking reaction' but could also contribute to the 'mediolateral ankle strategy'. The resultant balance correction is small but fast, and so diminishes the need for later corrections by the stepping strategy.

KW - Journal Article

KW - CAT

KW - DISPLACEMENT

KW - LATERAL BALANCE

KW - SUPPORT SURFACE

KW - FOOT PLACEMENT

KW - FRONTAL PLANE

KW - GAIT

KW - PRESSURE

KW - REFLEX

KW - STANCE

U2 - 10.1016/j.humov.2017.11.009

DO - 10.1016/j.humov.2017.11.009

M3 - Article

VL - 57

SP - 69

EP - 82

JO - Human Movement Science

JF - Human Movement Science

SN - 0167-9457

ER -

ID: 50565557