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MRI INVESTIGATION ON THE EFFECTIVENESS OF HIGH-INTENSITY JUMP TRAINING IN PRESERVING LUMBAR PARASPINAL MUSCLE MASS DURING 60 DAYS OF BED REST: RESULTS FROM THE COLOGNE RSL STUDY

Pivetta, F. and Belavy, D. and Gast, U. and Gerlach, D.A. and Gollhofer, A. and Rantalainen, T. and Rittweger, J. and Zange, J. and Felsenberg, D. and Armbrecht, G. (2018) MRI INVESTIGATION ON THE EFFECTIVENESS OF HIGH-INTENSITY JUMP TRAINING IN PRESERVING LUMBAR PARASPINAL MUSCLE MASS DURING 60 DAYS OF BED REST: RESULTS FROM THE COLOGNE RSL STUDY. 69th International Astronautical Congress 2018, 1.-5. Oktober 2018, Bremen, Germany. (Unpublished)

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Abstract

Background: An astronaut’s body is exposed during spaceflight to the peculiar condition of weightlessness, and consequently experiences various adaptive changes, among which bone and muscle loss stand out. Although space agencies nowadays adopt numerous preventive measures against these pathologies, they are presently only able to reduce their entity but not entirely prevent their onset. Hence, alternative countermeasures are currently being investigated, in the hope that they may be more effective and efficient in this setting. Objective: The purpose of this experimental study was to assess the usefulness of a novel form of high-intensity interval training (HIIT), based on the principle of jumping, which could be used aboard the International Space Station (ISS) to prevent musculoskeletal deconditioning in astronauts. The effectiveness of the training has been determined by evaluating its ability in preventing the onset of atrophy in lumbar paraspinal muscles, and chiefly in the multifidus, over the course of a bed-rest study. Materials and Methods: Twenty-three healthy male participants, aged between 21 and 42, selected after an extensive screening procedure, were confined for ninety days in the facilities of the German Aerospace Centre in Cologne. The study was divided in three phases: a 15-day baseline measurement phase, a 60-day 6 head-down-tilt (HDT) bed-rest phase, and a 15-day recovery phase. Participants were oralrandomly allocated to the control group (CTRL, n=11) or the training group (JUMP, n=12). Subjects have been carefully monitored during the whole study, and the dimensions of their lumbar paraspinal muscles has been measured using magnetic resonance imaging at nine points in time, during and after the bed rest. Results: Subjects have tolerated the exercise well, and adherence to the planned protocol has been perfect, despite a few deviations in intensity. No significant difference in lumbar paraspinal muscles atrophy between the training and the control group has emerged at any study-date (p=0.210), whereas a significant reduction in their thickness at the end of the bed rest has been demonstrated in both Groups (-5,05%, p<0.001). No beneficial effect to single vertebral segments of the lumbar paraspinal muscles has been observed either. Conclusions: The training has shown itself to be able neither to prevent the onset of lumbar paraspinal muscles disuse atrophy nor to reduce its severity compared to the controls. For future countermeasures, we recommend muscle-specific high-intensity exercise as being more likely to retain lumbar muscle mass

Item URL in elib:https://elib.dlr.de/126166/
Document Type:Conference or Workshop Item (Speech)
Title:MRI INVESTIGATION ON THE EFFECTIVENESS OF HIGH-INTENSITY JUMP TRAINING IN PRESERVING LUMBAR PARASPINAL MUSCLE MASS DURING 60 DAYS OF BED REST: RESULTS FROM THE COLOGNE RSL STUDY
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pivetta, F.Charité - University Medicine Berlin, GermanyUNSPECIFIED
Belavy, D.Deakin University, AustraliaUNSPECIFIED
Gast, U.Charité University Medicine BerlinUNSPECIFIED
Gerlach, D.A.German Aerospace Center (DLR)https://orcid.org/0000-0001-7044-6065
Gollhofer, A.Department of Sport Science, University of Freiburg, GermanyUNSPECIFIED
Rantalainen, T.Deakin University, AustraliaUNSPECIFIED
Rittweger, J.Institute of Aerospace Medicine, Deutsches Zentrum für Luft- und Raumfahrt, DLR e.V., Cologne, Germany and Medical Faculty, University of Cologne, Cologne, Germany; joern.rittweger (at) dlr.deUNSPECIFIED
Zange, J.German Aerospace Center (DLR), Institute of Aerospace Medicine, Space Physiology, Cologne, Germany; and Medical Faculty of the University of Cologne, Cologne, Germany; jochen.zange (at) dlr.deUNSPECIFIED
Felsenberg, D.Charité - University Medicine BerlinUNSPECIFIED
Armbrecht, G.Charité - University Medicine BerlinUNSPECIFIED
Date:October 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:EFFECTIVENESS OF HIGH-INTENSITY JUMP TRAINING; PRESERVING LUMBAR PARASPINAL MUSCLE MASS; 60 Days of Bed Rest
Event Title:69th International Astronautical Congress 2018
Event Location:Bremen, Germany
Event Type:international Conference
Event Dates:1.-5. Oktober 2018
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 - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Systemphysiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Cardiovascular Medicine in Aerospace
Deposited By: Schrage, Larissa
Deposited On:24 Jan 2019 11:10
Last Modified:31 Jul 2019 20:24

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