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Gastrocnemius Medialis Contractile Behavior Is Preserved During 30% Body Weight Supported Gait Training

Richter, C. and Braunstein, B. and Staeudle, B. and Attias, J. and Suess, A. and Weber, T. and Mileva, K. and Rittweger, J. and Green, D.A. and Albracht, K. (2021) Gastrocnemius Medialis Contractile Behavior Is Preserved During 30% Body Weight Supported Gait Training. Frontiers in Sports and Active Living, 2, p. 614559. Frontiers Media S.A.. doi: 10.3389/fspor.2020.614559. ISSN 2624-9367.

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Official URL: https://www.frontiersin.org/articles/10.3389/fspor.2020.614559/full

Abstract

Rehabilitative body weight supported gait training aims at restoring walking function as a key element in activities of daily living. Studies demonstrated reductions in muscle and joint forces, while kinematic gait patterns appear to be preserved with up to 30% weight support. However, the influence of body weight support on muscle architecture, with respect to fascicle and series elastic element behavior is unknown, despite this having potential clinical implications for gait retraining. Eight males (31.9 ± 4.7 years) walked at 75% of the speed at which they typically transition to running, with 0% and 30% body weight support on a lower-body positive pressure treadmill. Gastrocnemius medialis fascicle lengths and pennation angles were measured via ultrasonography. Additionally, joint kinematics were analyzed to determine gastrocnemius medialis muscle–tendon unit lengths, consisting of the muscle’s contractile and series elastic elements. Series elastic element length was assessed using a muscle–tendon unit model. Depending on whether data were normally distributed, a paired t-test or Wilcoxon signed rank test was performed to determine if body weight supported walking had any effects on joint kinematics and fascicle–series elastic element behavior. Walking with 30% body weight support had no statistically significant effect on joint kinematics and peak series elastic element length. Furthermore, at the time when peak series elastic element length was achieved, and on average across the entire stance phase, muscle–tendon unit length, fascicle length, pennation angle, and fascicle velocity were unchanged with respect to body weight support. In accordance with unchanged gait kinematics, preservation of fascicle–series elastic element behavior was observed during walking with 30% body weight support, which suggests transferability of gait patterns to subsequent unsupported walking.

Item URL in elib:https://elib.dlr.de/140719/
Document Type:Article
Title:Gastrocnemius Medialis Contractile Behavior Is Preserved During 30% Body Weight Supported Gait Training
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Richter, C.Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, GermanyUNSPECIFIED
Braunstein, B.Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, GermanyUNSPECIFIED
Staeudle, B.Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, GermanyUNSPECIFIED
Attias, J.Centre of Human and Applied Physiological Sciences, King‘s College London, London, United KingdomUNSPECIFIED
Suess, A.European Astronaut Centre (EAC), European Space Agency, Space Medicine Team (HRE-OM), Cologne, GermanyUNSPECIFIED
Weber, T.tobias.weber (at) esa.intUNSPECIFIED
Mileva, K.School of Applied Sciences, London South Bank University, London, United Kingdom,UNSPECIFIED
Rittweger, J.Joern.Rittweger (at) dlr.dehttps://orcid.org/0000-0002-2223-8963
Green, D.A.Centre of Human and Aerospace Physiological Sciences, King’s College London, London SE11UL, UKUNSPECIFIED
Albracht, K.German Sport University Colognehttps://orcid.org/0000-0002-4271-2511
Date:18 January 2021
Journal or Publication Title:Frontiers in Sports and Active Living
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
Volume:2
DOI :10.3389/fspor.2020.614559
Page Range:p. 614559
Publisher:Frontiers Media S.A.
ISSN:2624-9367
Status:Published
Keywords:unloading, muscle fascicle behavior, series elastic element behavior, ultrasound imaging, walking, gait, rehabilitation, AlterG
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Vorhaben Systemphysiologie (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Muscle and Bone Metabolism
Deposited By: Arndt, Carina
Deposited On:02 Feb 2021 09:33
Last Modified:02 Feb 2021 09:33

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