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Comparison of trunk muscle exercises in supine position during short arm centrifugation with 1 g at centre of mass and upright in 1 g

Frett, T. and Lecheler, L. and Speer, M. and Marcos, D. and Pesta, D. and Tegtbur, U. and Schmitz, M.T. and Jordan, J. and Green, D.A. (2022) Comparison of trunk muscle exercises in supine position during short arm centrifugation with 1 g at centre of mass and upright in 1 g. Frontiers in Physiology, 13, p. 955312. Frontiers Media S.A. doi: 10.3389/fphys.2022.955312. ISSN 1664-042X.

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Official URL: https://doi.org/10.3389/fphys.2022.955312

Abstract

Spaceflight is associated with reduced antigravitational muscle activity, which results in trunk muscle atrophy and may contribute to post-flight postural and spinal instability. Exercise in artificial gravity (AG) performed via short-arm human centrifugation (SAHC) is a promising multi-organ countermeasure, especially to mitigate microgravity-induced postural muscle atrophy. Here, we compared trunk muscular activity (mm. rectus abdominis, ext. obliques and multifidi), cardiovascular response and tolerability of trunk muscle exercises performed during centrifugation with 1 g at individual center of mass on a SAHC against standard upright exercising. We recorded heart rate, blood pressure, surface trunk muscle activity, motion sickness and rating of perceived exertion (BORG) of 12 participants (8 male/4 female, 34 ± 7 years, 178.4 ± 8.2 cm, 72.1 ± 9.6 kg). Heart rate was significantly increased (p < 0.001) during exercises without differences in conditions. Systolic blood pressure was higher (p < 0.001) during centrifugation with a delayed rise during exercises in upright condition. Diastolic blood pressure was lower in upright (p = 0.018) compared to counter-clockwise but not to clockwise centrifugation. Target muscle activation were comparable between conditions, although activity of multifidi was lower (clockwise: p = 0.003, counter-clockwise: p < 0.001) and rectus abdominis were higher (clockwise: p = 0.0023, counter-clockwise: < 0.001) during centrifugation in one exercise type. No sessions were terminated, BORG scoring reflected a relevant training intensity and no significant increase in motion sickness was reported during centrifugation. Thus, exercising trunk muscles during centrifugation generates comparable targeted muscular and heart rate response and appears to be well tolerated. Differences in blood pressure were relatively minor and not indicative of haemodynamic challenge. SAHC-based muscle training is a candidate to reduce microgravity-induced inter-vertebral disc pathology and trunk muscle atrophy. However, further optimization is required prior to performance of a training study for individuals with trunk muscle atrophy/dysfunction.

Item URL in elib:https://elib.dlr.de/190313/
Document Type:Article
Title:Comparison of trunk muscle exercises in supine position during short arm centrifugation with 1 g at centre of mass and upright in 1 g
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Frett, T.german aerospace centre (dlr), institute of aerospace medicine, gravitational biology, cologne, germanyhttps://orcid.org/0000-0002-5572-1177
Lecheler, L.Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, GermanyUNSPECIFIED
Speer, M.European Space Agency, Cologne, GermanyUNSPECIFIED
Marcos, D.Universidad Autónoma Madrid, Madrid, SpainUNSPECIFIED
Pesta, D.German Aerospace Center, Institute of Aerospace Medicine, Cologne, GermanyUNSPECIFIED
Tegtbur, U.Institute of Sports Medicine, Hannover Medical School, 30625 Hannover, GermanyUNSPECIFIED
Schmitz, M.T.German Aerospace Center, Institute of Aerospace Medicine, Cologne, GermanyUNSPECIFIED
Jordan, J.Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany and Lehrstuhl für Luft- und Raumfahrtmedizin, Universität zu Köln; Jens.Jordan (at) dlr.dehttps://orcid.org/0000-0003-4518-0706
Green, D.A.European Space Agency, Cologne, GermanyUNSPECIFIED
Date:17 August 2022
Journal or Publication Title:Frontiers in Physiology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:13
DOI:10.3389/fphys.2022.955312
Page Range:p. 955312
Publisher:Frontiers Media S.A
ISSN:1664-042X
Status:Published
Keywords:artificial gravity; countermeasure; exercise; spaceflight; trunk muscle atrophy
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 - Human performance under altered gravity conditions
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine
Institute of Aerospace Medicine > Muscle and Bone Metabolism
Institute of Aerospace Medicine > Leitungsbereich ME
Deposited By: Schrage, Larissa
Deposited On:22 Nov 2022 11:49
Last Modified:22 Nov 2022 11:49

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