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Resistive vibration exercise during bed-rest reduces motor control changes in the lumbo-pelvic musculature

Belavy, Daniel and Wilson, Stephen J. and Armbrecht, Gabriele and Rittweger, Jörn and Felsenberg, Dieter and Richardson, Carolyn A. (2012) Resistive vibration exercise during bed-rest reduces motor control changes in the lumbo-pelvic musculature. Journal of Electromyography and Kinesiology, 22, pp. 21-30. ISSN 1050-6411.

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Abstract

To understand the effects of a resistive vibration exercise (RVE) countermeasure on changes in lumbopelvic muscle motor control during prolonged bed-rest, 20 male subjects took part in the Berlin Bed-Rest Study (in 2003–2005) and were randomised to a RVE group or an inactive control group. Surface electromyographic signals recorded from five superficial lumbo-pelvic muscles during a repetitive knee movement task. The task, which required stabilisation of the lumbo-pelvic region, was performed at multiple movement speeds and at multiple time points during and after bed-rest. After excluding effects that could be attributed to increases in subcutaneous fat changes and improvements in movement skill, we found that the RVE intervention ameliorated the generalised increases in activity ratios between movement speeds (p 6 0.012), reductions in lumbo-pelvic extensor and flexor co-contraction (p = 0.058) and increases in root-mean-square electromyographic amplitude (p = 0.001) of the lumbar erector spinae muscles. Effects of RVE on preventing increases in amplitude-modulation (p = 0.23) of the lumbar erector spinae muscles were not significant. Few significant changes in activation-timing were seen. The RVE intervention during bed-rest, with indirect loading of the spine during exercise, was capable of reducing some, but not all, motor control changes in the lumbo-pelvic musculature during and after bed-rest.

Document Type:Article
Title:Resistive vibration exercise during bed-rest reduces motor control changes in the lumbo-pelvic musculature
Authors:
AuthorsInstitution or Email of Authors
Belavy, DanielCharité University Medicine Berlin
Wilson, Stephen J.University of Queensland
Armbrecht, GabrieleCharité Campus Benjamin Franklin
Rittweger, Jörnjoern.rittweger@dlr.de
Felsenberg, DieterCharité Campus Benjamin Franklin
Richardson, Carolyn A.University of Queensland
Date:2012
Journal or Publication Title:Journal of Electromyography and Kinesiology
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:22
Page Range:pp. 21-30
ISSN:1050-6411
Status:Published
Keywords:Spaceflight Timing Signal processing Phasic Body composition Low back pain
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 Integrative Studien
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Jörn Rittweger
Deposited On:24 Jan 2012 09:02
Last Modified:26 Mar 2013 13:36

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