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Study protocol, implementation, and verification of a short versatile upright exercise regime during 5 days of bed rest

Mulder, Edwin and Frings-Meuthen, Petra and von der Wiesche, Melanie and Clément, Gilles and Linnarsson, Dag and Paloski, William and Wuyts, F.L. and Zange, J. and Rittweger, Jörn (2014) Study protocol, implementation, and verification of a short versatile upright exercise regime during 5 days of bed rest. Journal of Musculoskeletal and Neuronal Interactions, 14 (1), pp. 111-123. International Society of Musculoskeletal and Neuronal Interactions. ISSN 1108-7161

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Abstract

Objectives: This work provides a reference for future papers originating from this study by providing basic results on body mass, urine volume, and hemodynamic changes to 5 days of bed rest (BR) and by describing acute cardio-respiratory/mechanographic responses to a short versatile upright exercise battery. Methods: Ten male subjects (mean±SEM age: 29.4±1.5 years; height: 178.8±1.5 cm; body mass: 77.7±1.5 kg) performed, in random order, 5 days of 6° head-down tilt (HDT) BR with no exercise (CON), or BR with daily 25 minutes of quiet upright standing (STA) or upright locomotion replacement training (LRT). Results: Plasma volume, exercise capacity and orthostatic tolerance decreased similarly between interventions following 5 days of BR. Upright heart rate during LRT and STA increased throughout BR; from 137±4 bpm to 146±4 bpm for LRT (P<0.01); and from 90±3 bpm to 102±6 bpm (P<0.001) for STA. Conclusion: the overall similarity in the response to BR, and increase in upright heart rate during the LRT sessions suggest early and advancing cardiovascular deconditioning during 5 days of BR bed rest, which was not prevented by the versatile exercise regime.

Item URL in elib:https://elib.dlr.de/88488/
Document Type:Article
Title:Study protocol, implementation, and verification of a short versatile upright exercise regime during 5 days of bed rest
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mulder, EdwinEdwin.Mulder (at) dlr.deUNSPECIFIED
Frings-Meuthen, PetraMEUNSPECIFIED
von der Wiesche, MelanieGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, GermanyUNSPECIFIED
Clément, GillesInternational Space University, Strasbourg, France, EUUNSPECIFIED
Linnarsson, DagKarolinska Institutet, Dept. of Physiology and Pharmacology, Sect. of Environmental PhysiologyUNSPECIFIED
Paloski, WilliamNASA JSC, HoustonUNSPECIFIED
Wuyts, F.L.UNSPECIFIEDUNSPECIFIED
Zange, J.UNSPECIFIEDUNSPECIFIED
Rittweger, Jörnjoern.rittweger (at) dlr.deUNSPECIFIED
Date:March 2014
Journal or Publication Title:Journal of Musculoskeletal and Neuronal Interactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:14
Page Range:pp. 111-123
Publisher:International Society of Musculoskeletal and Neuronal Interactions
ISSN:1108-7161
Status:Published
Keywords:Smith Machine, bed rest, standardization, squat, heel raise
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 Artificial Gravity
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Becker, Christine
Deposited On:12 Mar 2014 12:36
Last Modified:30 Aug 2017 10:24

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