In vivo measurements of spinal stiffness according to a stepwise increase of axial load

Background The spine has a complex motor control. Its different stabilization mechanisms through passive, active, and neurological subsystems may result in spinal stiffness. To better understand lumbar spinal motor control, this study aimed to measure the effects of increasing the axial load on spin...

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Bibliographic Details
Published in:European journal of applied physiology 2021-08, Vol.121 (8), p.2277-2283
Main Authors: Glaus, Lea Suzanne, Hofstetter, Léonie, Guekos, Alexandros, Schweinhardt, Petra, Swanenburg, Jaap
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Body weight
Human Physiology
Load
Motor task performance
Occupational Medicine/Industrial Medicine
Original
Original Article
Rehabilitation
Spine (lumbar)
Sports Medicine
Vertebrae
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Summary:Background The spine has a complex motor control. Its different stabilization mechanisms through passive, active, and neurological subsystems may result in spinal stiffness. To better understand lumbar spinal motor control, this study aimed to measure the effects of increasing the axial load on spinal stiffness. Methods A total of 19 healthy young participants (mean age, 24 ± 2.1 years; 8 males and 11 females) were assessed in an upright standing position. Under different axial loads, the posterior-to-anterior spinal stiffness of the thoracic and lumbar spine was measured. Loads were 0%, 10%, 45%, and 80% of the participant’s body weight. Results Data were normally distributed and showed excellent reliability. A repeated-measures analysis of variance with a Greenhouse–Geisser correction showed an effect of the loading condition on the mean spinal stiffness [F (2.6, 744) = 3.456, p  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-021-04705-5