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Limited effect of fly-wheel and spinal mobilization exercise countermeasures on lumbar spine deconditioning during 90 d bed-rest in the Toulouse LTBR study

Belavý, Daniel L., Ohshima, Hiroshi, Bareille, Marie-Pierre, Rittweger, Jorn and Felsenberg, Dieter 2011, Limited effect of fly-wheel and spinal mobilization exercise countermeasures on lumbar spine deconditioning during 90 d bed-rest in the Toulouse LTBR study, Acta astronautica, vol. 69, no. 7-8, September-October, pp. 406-419, doi: 10.1016/j.actaastro.2011.05.015.

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Title Limited effect of fly-wheel and spinal mobilization exercise countermeasures on lumbar spine deconditioning during 90 d bed-rest in the Toulouse LTBR study
Author(s) Belavý, Daniel L.ORCID iD for Belavý, Daniel L. orcid.org/0000-0002-9307-832X
Ohshima, Hiroshi
Bareille, Marie-Pierre
Rittweger, Jorn
Felsenberg, Dieter
Journal name Acta astronautica
Volume number 69
Issue number 7-8
Season September-October
Start page 406
End page 419
Total pages 14
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2011-09
ISSN 0094-5765
Keyword(s) Science & Technology
Technology
Engineering, Aerospace
Engineering
Spaceflight
Weightlessness
Microgravity
Low back pain
Herniation
CROSS-SECTIONAL AREA
HEAD-DOWN-TILT
WHOLE-BODY VIBRATION
INTERVERTEBRAL DISC
MUSCLE ATROPHY
BONE LOSS
RESISTANCE EXERCISE
BACK-PAIN
IN-VIVO
RESISTIVE EXERCISE
Summary We examined the effect of high-load fly-wheel (targeting the lower-limb musculature and concurrent loading of the spine via shoulder restraints) and spinal movement countermeasures against lumbar spine muscle atrophy, disc and spinal morphology changes and trunk isokinetic torque loss during prolonged bed-rest. Twenty-four male subjects underwent 90 d head-down tilt bed-rest and performed either fly-wheel (FW) exercises every three days, spinal movement exercises in lying five times daily (SpMob), or no exercise (Ctrl). There was no significant impact of countermeasures on losses of isokinetic trunk flexion/extension (p≥0.65). Muscle volume change by day-89 of bed-rest in the psoas, iliacus, lumbar erector spinae, lumbar multifidus and quadratus lumborum, as measured via magnetic resonance imaging (MRI), was statistically similar in all three groups (p≥0.33). No significant effect on MRI-measures of lumbar intervertebral disc volume, spinal length and lordosis (p≥0.09) were seen either, but there was some impact (p≤0.048) on axial plane disc dimensions (greater reduction than in Ctrl) and disc height (greater increases than in Ctrl). MRI-data from subjects measured 13 and 90-days after bed-rest showed partial recovery of the spinal extensor musculature by day-13 after bed-rest with this process complete by day-90. Some changes in lumbar spine and disc morphology parameters were still persistent 90-days after bed-rest. The present results indicate that the countermeasures tested were not optimal to maintain integrity of the spine and trunk musculature during bed rest. © 2011 Elsevier Ltd.
Language eng
DOI 10.1016/j.actaastro.2011.05.015
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 920299 Health and Support Services not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071042

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