Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities

Abstract The international partnership of space agencies has agreed to proceed forward to the Moon sustainably. Activities on the Lunar surface (0.16 g) will allow crewmembers to advance the exploration skills needed when expanding human presence to Mars (0.38 g). Whilst data from actual hypogravity...

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Autores principales:	Charlotte Richter, Bjoern Braunstein, Benjamin Staeudle, Julia Attias, Alexander Suess, Tobias Weber, Katya N. Mileva, Joern Rittweger, David A. Green, Kirsten Albracht
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/17cfb1ed93364aa0a658ecf6c5d55dc5
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spelling	oai:doaj.org-article:17cfb1ed93364aa0a658ecf6c5d55dc52021-11-21T12:16:32ZGastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities10.1038/s41598-021-00527-92045-2322https://doaj.org/article/17cfb1ed93364aa0a658ecf6c5d55dc52021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-00527-9https://doaj.org/toc/2045-2322Abstract The international partnership of space agencies has agreed to proceed forward to the Moon sustainably. Activities on the Lunar surface (0.16 g) will allow crewmembers to advance the exploration skills needed when expanding human presence to Mars (0.38 g). Whilst data from actual hypogravity activities are limited to the Apollo missions, simulation studies have indicated that ground reaction forces, mechanical work, muscle activation, and joint angles decrease with declining gravity level. However, these alterations in locomotion biomechanics do not necessarily scale to the gravity level, the reduction in gastrocnemius medialis activation even appears to level off around 0.2 g, while muscle activation pattern remains similar. Thus, it is difficult to predict whether gastrocnemius medialis contractile behavior during running on Moon will basically be the same as on Mars. Therefore, this study investigated lower limb joint kinematics and gastrocnemius medialis behavior during running at 1 g, simulated Martian gravity, and simulated Lunar gravity on the vertical treadmill facility. The results indicate that hypogravity-induced alterations in joint kinematics and contractile behavior still persist between simulated running on the Moon and Mars. This contrasts with the concept of a ceiling effect and should be carefully considered when evaluating exercise prescriptions and the transferability of locomotion practiced in Lunar gravity to Martian gravity.Charlotte RichterBjoern BraunsteinBenjamin StaeudleJulia AttiasAlexander SuessTobias WeberKatya N. MilevaJoern RittwegerDavid A. GreenKirsten AlbrachtNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Charlotte Richter Bjoern Braunstein Benjamin Staeudle Julia Attias Alexander Suess Tobias Weber Katya N. Mileva Joern Rittweger David A. Green Kirsten Albracht Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities
description	Abstract The international partnership of space agencies has agreed to proceed forward to the Moon sustainably. Activities on the Lunar surface (0.16 g) will allow crewmembers to advance the exploration skills needed when expanding human presence to Mars (0.38 g). Whilst data from actual hypogravity activities are limited to the Apollo missions, simulation studies have indicated that ground reaction forces, mechanical work, muscle activation, and joint angles decrease with declining gravity level. However, these alterations in locomotion biomechanics do not necessarily scale to the gravity level, the reduction in gastrocnemius medialis activation even appears to level off around 0.2 g, while muscle activation pattern remains similar. Thus, it is difficult to predict whether gastrocnemius medialis contractile behavior during running on Moon will basically be the same as on Mars. Therefore, this study investigated lower limb joint kinematics and gastrocnemius medialis behavior during running at 1 g, simulated Martian gravity, and simulated Lunar gravity on the vertical treadmill facility. The results indicate that hypogravity-induced alterations in joint kinematics and contractile behavior still persist between simulated running on the Moon and Mars. This contrasts with the concept of a ceiling effect and should be carefully considered when evaluating exercise prescriptions and the transferability of locomotion practiced in Lunar gravity to Martian gravity.
format	article
author	Charlotte Richter Bjoern Braunstein Benjamin Staeudle Julia Attias Alexander Suess Tobias Weber Katya N. Mileva Joern Rittweger David A. Green Kirsten Albracht
author_facet	Charlotte Richter Bjoern Braunstein Benjamin Staeudle Julia Attias Alexander Suess Tobias Weber Katya N. Mileva Joern Rittweger David A. Green Kirsten Albracht
author_sort	Charlotte Richter
title	Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities
title_short	Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities
title_full	Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities
title_fullStr	Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities
title_full_unstemmed	Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities
title_sort	gastrocnemius medialis contractile behavior during running differs between simulated lunar and martian gravities
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/17cfb1ed93364aa0a658ecf6c5d55dc5
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Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities

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