Interlimb coordination in body-weight supported locomotion: A pilot study

Stefan Seiterle, Tyler Susko, Panagiotis Artemiadis, Robert Riener, Hermano Igo Krebs

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Locomotion involves complex neural networks responsible for automatic and volitional actions. During locomotion, motor strategies can rapidly compensate for any obstruction or perturbation that could interfere with forward progression. In this pilot study, we examined the contribution of interlimb pathways for evoking muscle activation patterns in the contralateral limb when a unilateral perturbation was applied and in the case where body weight was externally supported. In particular, the latency of neuromuscular responses was measured, while the stimulus to afferent feedback was limited. The pilot experiment was conducted with six healthy young subjects. It employed the MIT-Skywalker (beta-prototype), a novel device intended for gait therapy. Subjects were asked to walk on the split-belt treadmill, while a fast unilateral perturbation was applied mid-stance by unexpectedly lowering one side of the split-treadmill walking surfaces. Subject's weight was externally supported via the body-weight support system consisting of an underneath bicycle seat and the torso was stabilized via a loosely fitted chest harness. Both the weight support and the chest harness limited the afferent feedback. The unilateral perturbations evoked changes in the electromyographic activity of the non-perturbed contralateral leg. The latency of all muscle responses exceeded 100 ms, which precludes the conjecture that spinal cord alone is responsible for the perturbation response. It suggests the role of supraspinal or midbrain level pathways at the inter-leg coordination during gait.

Original languageEnglish (US)
Pages (from-to)2837-2843
Number of pages7
JournalJournal of Biomechanics
Volume48
Issue number11
DOIs
StatePublished - Aug 20 2015

Fingerprint

Exercise equipment
Locomotion
Gait
Muscle
Leg
Thorax
Body Weight
Feedback
Weights and Measures
Torso
Muscles
Bicycles
Mesencephalon
Seats
Reaction Time
Walking
Spinal Cord
Healthy Volunteers
Extremities
Chemical activation

Keywords

  • Gait
  • Gait perturbation
  • Interlimb coordination
  • Locomotion
  • Robotics
  • Training

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Rehabilitation
  • Biophysics
  • Biomedical Engineering

Cite this

Interlimb coordination in body-weight supported locomotion : A pilot study. / Seiterle, Stefan; Susko, Tyler; Artemiadis, Panagiotis; Riener, Robert; Igo Krebs, Hermano.

In: Journal of Biomechanics, Vol. 48, No. 11, 20.08.2015, p. 2837-2843.

Research output: Contribution to journalArticle

Seiterle, Stefan ; Susko, Tyler ; Artemiadis, Panagiotis ; Riener, Robert ; Igo Krebs, Hermano. / Interlimb coordination in body-weight supported locomotion : A pilot study. In: Journal of Biomechanics. 2015 ; Vol. 48, No. 11. pp. 2837-2843.
@article{6919ffdc3c75427287d7101c865f274d,
title = "Interlimb coordination in body-weight supported locomotion: A pilot study",
abstract = "Locomotion involves complex neural networks responsible for automatic and volitional actions. During locomotion, motor strategies can rapidly compensate for any obstruction or perturbation that could interfere with forward progression. In this pilot study, we examined the contribution of interlimb pathways for evoking muscle activation patterns in the contralateral limb when a unilateral perturbation was applied and in the case where body weight was externally supported. In particular, the latency of neuromuscular responses was measured, while the stimulus to afferent feedback was limited. The pilot experiment was conducted with six healthy young subjects. It employed the MIT-Skywalker (beta-prototype), a novel device intended for gait therapy. Subjects were asked to walk on the split-belt treadmill, while a fast unilateral perturbation was applied mid-stance by unexpectedly lowering one side of the split-treadmill walking surfaces. Subject's weight was externally supported via the body-weight support system consisting of an underneath bicycle seat and the torso was stabilized via a loosely fitted chest harness. Both the weight support and the chest harness limited the afferent feedback. The unilateral perturbations evoked changes in the electromyographic activity of the non-perturbed contralateral leg. The latency of all muscle responses exceeded 100 ms, which precludes the conjecture that spinal cord alone is responsible for the perturbation response. It suggests the role of supraspinal or midbrain level pathways at the inter-leg coordination during gait.",
keywords = "Gait, Gait perturbation, Interlimb coordination, Locomotion, Robotics, Training",
author = "Stefan Seiterle and Tyler Susko and Panagiotis Artemiadis and Robert Riener and {Igo Krebs}, Hermano",
year = "2015",
month = "8",
day = "20",
doi = "10.1016/j.jbiomech.2015.04.042",
language = "English (US)",
volume = "48",
pages = "2837--2843",
journal = "Journal of Biomechanics",
issn = "0021-9290",
publisher = "Elsevier Limited",
number = "11",

}

TY - JOUR

T1 - Interlimb coordination in body-weight supported locomotion

T2 - A pilot study

AU - Seiterle, Stefan

AU - Susko, Tyler

AU - Artemiadis, Panagiotis

AU - Riener, Robert

AU - Igo Krebs, Hermano

PY - 2015/8/20

Y1 - 2015/8/20

N2 - Locomotion involves complex neural networks responsible for automatic and volitional actions. During locomotion, motor strategies can rapidly compensate for any obstruction or perturbation that could interfere with forward progression. In this pilot study, we examined the contribution of interlimb pathways for evoking muscle activation patterns in the contralateral limb when a unilateral perturbation was applied and in the case where body weight was externally supported. In particular, the latency of neuromuscular responses was measured, while the stimulus to afferent feedback was limited. The pilot experiment was conducted with six healthy young subjects. It employed the MIT-Skywalker (beta-prototype), a novel device intended for gait therapy. Subjects were asked to walk on the split-belt treadmill, while a fast unilateral perturbation was applied mid-stance by unexpectedly lowering one side of the split-treadmill walking surfaces. Subject's weight was externally supported via the body-weight support system consisting of an underneath bicycle seat and the torso was stabilized via a loosely fitted chest harness. Both the weight support and the chest harness limited the afferent feedback. The unilateral perturbations evoked changes in the electromyographic activity of the non-perturbed contralateral leg. The latency of all muscle responses exceeded 100 ms, which precludes the conjecture that spinal cord alone is responsible for the perturbation response. It suggests the role of supraspinal or midbrain level pathways at the inter-leg coordination during gait.

AB - Locomotion involves complex neural networks responsible for automatic and volitional actions. During locomotion, motor strategies can rapidly compensate for any obstruction or perturbation that could interfere with forward progression. In this pilot study, we examined the contribution of interlimb pathways for evoking muscle activation patterns in the contralateral limb when a unilateral perturbation was applied and in the case where body weight was externally supported. In particular, the latency of neuromuscular responses was measured, while the stimulus to afferent feedback was limited. The pilot experiment was conducted with six healthy young subjects. It employed the MIT-Skywalker (beta-prototype), a novel device intended for gait therapy. Subjects were asked to walk on the split-belt treadmill, while a fast unilateral perturbation was applied mid-stance by unexpectedly lowering one side of the split-treadmill walking surfaces. Subject's weight was externally supported via the body-weight support system consisting of an underneath bicycle seat and the torso was stabilized via a loosely fitted chest harness. Both the weight support and the chest harness limited the afferent feedback. The unilateral perturbations evoked changes in the electromyographic activity of the non-perturbed contralateral leg. The latency of all muscle responses exceeded 100 ms, which precludes the conjecture that spinal cord alone is responsible for the perturbation response. It suggests the role of supraspinal or midbrain level pathways at the inter-leg coordination during gait.

KW - Gait

KW - Gait perturbation

KW - Interlimb coordination

KW - Locomotion

KW - Robotics

KW - Training

UR - http://www.scopus.com/inward/record.url?scp=84938709446&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938709446&partnerID=8YFLogxK

U2 - 10.1016/j.jbiomech.2015.04.042

DO - 10.1016/j.jbiomech.2015.04.042

M3 - Article

C2 - 25990210

AN - SCOPUS:84938709446

VL - 48

SP - 2837

EP - 2843

JO - Journal of Biomechanics

JF - Journal of Biomechanics

SN - 0021-9290

IS - 11

ER -