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  4. Repeated exposure to tripping like perturbations elicits more precise control and lower toe clearance of the swinging foot during steady walking
 
research article

Repeated exposure to tripping like perturbations elicits more precise control and lower toe clearance of the swinging foot during steady walking

Miyake, Tamon
•
Aprigliano, Federica
•
Sugano, Shigeki
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April 1, 2021
Human Movement Science

Controlling minimum toe clearance (MTC) is considered an important factor in preventing tripping. In the current study, we investigated modifications of neuro-muscular control underlying toe clearance during steady locomotion induced by repeated exposure to tripping-like perturbations of the right swing foot. Fourteen healthy young adults (mean age 26.4 +/- 3.1 years) participated in the study. The experimental protocol consisted of three identical trials, each involving three phases: steady walking (baseline), perturbation, and steady walking (post perturbation). During the perturbation, participants experienced 30 tripping-like perturbations at unexpected timing delivered by a custom-made mechatronic perturbation device. The temporal parameters (cadence and stance phase%), mean, and standard deviation of MTC were computed across approximately 90 strides collected during both baseline and post-perturbation phases, for all trials. The effects of trial (three levels), phase (two levels: baseline and post-perturbation) and foot (two levels: right and left) on the outcome variables were analyzed using a three-way repeated measures analysis of variance. The results revealed that exposure to repeated trip-like perturbations modified MTC toward more precise control and lower toe clearance of the swinging foot, which appeared to reflect both the expectation of potential forthcoming perturbations and a quicker compensatory response in cases of a lack of balance. Moreover, locomotion control enabled subjects to maintain symmetric rhythmic features during post-perturbation steady walking. Finally, the effects of exposure to perturbation quickly disappeared among consecutive trials.

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Type
research article
DOI
10.1016/j.humov.2021.102775
Web of Science ID

WOS:000632802300012

Author(s)
Miyake, Tamon
Aprigliano, Federica
Sugano, Shigeki
Micera, Silvestro  
Monaco, Vito
Date Issued

2021-04-01

Publisher

ELSEVIER

Published in
Human Movement Science
Volume

76

Article Number

102775

Subjects

Neurosciences

•

Psychology

•

Psychology, Experimental

•

Sport Sciences

•

Neurosciences & Neurology

•

minimum toe clearance

•

tripping

•

locomotion

•

perturbation

•

falling

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
TNE  
Available on Infoscience
April 24, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/177549
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