Universität zu Köln

Richter, Charlotte, Braunstein, Bjoern ORCID: 0000-0002-5173-8916, Staeudle, Benjamin, Attias, Julia, Suess, Alexander, Weber, Tobias, Mileva, Katya N., Rittweger, Joern, Green, David A. and Albracht, Kirsten ORCID: 0000-0002-4271-2511 (2021). Contractile behavior of the gastrocnemius medialis muscle during running in simulated hypogravity. NPJ Microgravity, 7 (1). BERLIN: NATURE PORTFOLIO. ISSN 2373-8065

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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 Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Richter, Charlotte UNSPECIFIED UNSPECIFIED UNSPECIFIED Braunstein, Bjoern UNSPECIFIED orcid.org/0000-0002-5173-8916 UNSPECIFIED Staeudle, Benjamin UNSPECIFIED UNSPECIFIED UNSPECIFIED Attias, Julia UNSPECIFIED UNSPECIFIED UNSPECIFIED Suess, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Weber, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Mileva, Katya N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rittweger, Joern UNSPECIFIED UNSPECIFIED UNSPECIFIED Green, David A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Albracht, Kirsten UNSPECIFIED orcid.org/0000-0002-4271-2511 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-599169
DOI:	10.1038/s41526-021-00155-7
Journal or Publication Title:	NPJ Microgravity
Volume:	7
Number:	1
Date:	2021
Publisher:	NATURE PORTFOLIO
Place of Publication:	BERLIN
ISSN:	2373-8065
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GROUND REACTION FORCES; BODY-WEIGHT; REDUCED-GRAVITY; LOCOMOTION; SUPPORT; SPACE; SPEED; ARCHITECTURE; VELOCITY; EXERCISE Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59916