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Belavy, Daniel Ludovic and Ng, Joseph K.-F. and Wilson, Stephen J. and Armbrecht, Gabriele and Stegeman, Dick and Rittweger, Jörn and Felsenberg, Dieter and Richardson, Carolyn A. (2010) Influence of prolonged bed-rest on spectral and temporal electromyographic motor control characteristics in the superficial lumbo-pelvic musculature. Journal of Electromyography and Kinesiology, 20 (1), pp. 170-179. Elsevier.
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Abstract
Little is known about the motor control of the lumbo-pelvic musculature in microgravity and its simulation (bed-rest). Analysis of spectral and temporal electromyographic variables can provide information on motor control relevant for normal function. This study examined the effect of 56-days of bed-rest with 1-year follow-up in 10 male subjects on the median frequency and the activation timing in surface electromyographic recordings from five superficial lumbo-pelvic muscles during a repetitive knee movement task. Trunk fat mass (from whole body-composition measurements) and movement accuracy as possible explanatory factors were included. Increased median frequency was observed in the lumbar erector spinae starting late in bed-rest, but this was not seen in its synergist, the thoracic erector spinae (p < .0001). These changes persisted up to 1-year after bed-rest and were independent of changes in body-composition or movement accuracy. Analysis suggested decreases of median frequency (p < .0001) in the abdominal and gluteal muscles to result from increased (p < .01) trunk fat levels during and after bed-rest. No changes in lumbo-pelvic muscle activation timing were seen. The results suggest that bed-rest particularly affects the shorter lumbar erector spinae and that the temporal sequencing of superficial lumbo-pelvic muscle activation is relatively robust
| Item URL in elib: | https://elib.dlr.de/63894/ | ||||||||||||||||||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||||||||||||||||||
| Title: | Influence of prolonged bed-rest on spectral and temporal electromyographic motor control characteristics in the superficial lumbo-pelvic musculature | ||||||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 2010 | ||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Journal of Electromyography and Kinesiology | ||||||||||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||||||
| Volume: | 20 | ||||||||||||||||||||||||||||||||||||
| Page Range: | pp. 170-179 | ||||||||||||||||||||||||||||||||||||
| Publisher: | Elsevier | ||||||||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||||||||
| Keywords: | Spaceflight, Spine, Berlin bed-rest study, Median frequency, Motor control | ||||||||||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||||||||||||||||||||
| HGF - Program: | Space (old) | ||||||||||||||||||||||||||||||||||||
| HGF - Program Themes: | W FR - Forschung unter Weltraumbedingungen (old) | ||||||||||||||||||||||||||||||||||||
| DLR - Research area: | Space | ||||||||||||||||||||||||||||||||||||
| DLR - Program: | W FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||||||||||
| DLR - Research theme (Project): | W - Vorhaben Integrative Studien (old) | ||||||||||||||||||||||||||||||||||||
| Location: | Köln-Porz | ||||||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerospace Medicine > Space Physiology | ||||||||||||||||||||||||||||||||||||
| Deposited By: | Rittweger, Jörn | ||||||||||||||||||||||||||||||||||||
| Deposited On: | 28 Apr 2010 12:23 | ||||||||||||||||||||||||||||||||||||
| Last Modified: | 06 Sep 2019 15:27 |
Available Versions of this Item
- Influence of prolonged bed-rest on spectral and temporal electromyographic motor control characteristics in the superficial lumbo-pelvic musculature. (deposited 28 Apr 2010 12:23) [Currently Displayed]
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