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Contractile behavior of the gastrocnemius medialis muscle during running in simulated hypogravity

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. and Albracht, K. (2021) Contractile behavior of the gastrocnemius medialis muscle during running in simulated hypogravity. npj Microgravity, 7 (1), p. 32. Nature Publishing Group. doi: 10.1038/s41526-021-00155-7. ISSN 2373-8065.

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Official URL: https://www.nature.com/articles/s41526-021-00155-7

Abstract

Vigorous exercise countermeasures in microgravity can largely attenuate muscular degeneration, albeit the extent of applied loading is key for the extent of muscle wasting. Running on the International Space Station is usually performed with maximum loads of 70% body weight (0.7 g). However, it has not been investigated how the reduced musculoskeletal loading affects muscle and series elastic element dynamics, and thereby force and power generation. Therefore, this study examined the effects of running on the vertical treadmill facility, a ground-based analog, at simulated 0.7 g on gastrocnemius medialis contractile behavior. The results reveal that fascicle−series elastic element behavior differs between simulated hypogravity and 1 g running. Whilst shorter peak series elastic element lengths at simulated 0.7 g appear to be the result of lower muscular and gravitational forces acting on it, increased fascicle lengths and decreased velocities could not be anticipated, but may inform the development of optimized running training in hypogravity. However, whether the alterations in contractile behavior precipitate musculoskeletal degeneration warrants further study.

Item URL in elib:https://elib.dlr.de/144595/
Document Type:Article
Title:Contractile behavior of the gastrocnemius medialis muscle during running in simulated hypogravity
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Richter, C.Department of Medical Engineering and Technomathematics, University of Applied Sciences Aachen, Aachen, 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.German Aerospace Centre, Institute of Aerospace Medicine, Division Space Physiology, Cologne, GermanyUNSPECIFIED
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.Space Medicine Team (HRE-OM), European Astronaut Centre, European Space Agency, Cologne, Germany and KBR GmbH, Cologne, Germany and Centre of Human & Applied Physiological Sciences (CHAPS), King’s College London, London, United KingdomUNSPECIFIED
Albracht, K.German Sport University Colognehttps://orcid.org/0000-0002-4271-2511
Date:9 August 2021
Journal or Publication Title:npj Microgravity
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:7
DOI :10.1038/s41526-021-00155-7
Page Range:p. 32
Publisher:Nature Publishing Group
ISSN:2373-8065
Status:Published
Keywords:muscular degeneration; muscle wasting
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 - Muscle Mechanics and Metabolism
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine
Institute of Aerospace Medicine > Muscle and Bone Metabolism
Deposited By: Schönenberg, Sandra
Deposited On:21 Oct 2021 16:50
Last Modified:21 Oct 2021 16:50

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