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

Belavy, Daniel L., Wilson, Stephen J., Armbrecht, Gabriele, Rittweger, Jörn, 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 1: 21-30. doi:10.1016/j.jelekin.2011.09.009


Author Belavy, Daniel L.
Wilson, Stephen J.
Armbrecht, Gabriele
Rittweger, Jörn
Felsenberg, Dieter
Richardson, Carolyn A.
Title Resistive vibration exercise during bed-rest reduces motor control changes in the lumbo-pelvic musculature
Journal name Journal of Electromyography and Kinesiology   Check publisher's open access policy
ISSN 1050-6411
1873-5711
Publication date 2012-02
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.jelekin.2011.09.009
Volume 22
Issue 1
Start page 21
End page 30
Total pages 10
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
To understand the effects of a resistive vibration exercise (RVE) countermeasure on changes in lumbo-pelvic 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 ⩽ 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.
Keyword Spaceflight
Timing
Signal processing
Phasic
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 19 October 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Information Technology and Electrical Engineering Publications
 
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