Evidence map›Paper›PMID 33956197›Full record

ArticleEuropean journal of applied physiology2021

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

Lea Suzanne Glaus, Léonie Hofstetter, Alexandros Guekos, Petra Schweinhardt, Jaap Swanenburg

Abstract read
In one paragraph

Article in European journal of applied physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Lea Suzanne GlausDepartment of Chiropractic Medicine, Integrative Spinal Research ISR, Balgrist University Hospital, Balgrist Campus, Lengghalde 5, CH-8008, Zürich, Switzerland.
Léonie HofstetterDepartment of Chiropractic Medicine, Integrative Spinal Research ISR, Balgrist University Hospital, Balgrist Campus, Lengghalde 5, CH-8008, Zürich, Switzerland.
Alexandros GuekosDepartment of Chiropractic Medicine, Integrative Spinal Research ISR, Balgrist University Hospital, Balgrist Campus, Lengghalde 5, CH-8008, Zürich, Switzerland.
Petra SchweinhardtDepartment of Chiropractic Medicine, Integrative Spinal Research ISR, Balgrist University Hospital, Balgrist Campus, Lengghalde 5, CH-8008, Zürich, Switzerland.
Jaap SwanenburgDepartment of Chiropractic Medicine, Integrative Spinal Research ISR, Balgrist University Hospital, Balgrist Campus, Lengghalde 5, CH-8008, Zürich, Switzerland. jaap.swanenburg@balgrist.ch.ORCID http://orcid.org/0000-0002-1754-9206

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe 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.

methodsA 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.

resultsData 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 < 0.001]. Vertebrae and loading had no interaction [F (2.6, 741) = 0.656, p = 0.559]. Post hoc tests using Bonferroni correction revealed no changes with 10% loading (p = 1.000), and with every additional step of loading, spinal stiffness decreased: 0% or 10-45% loading (p < 0.001), 0% or 10-80% loading (p < 0.001), and 45-80% (p < 0.001).

conclusionWe conclude that a load of ≥ 45% of the participant's body weight can lead to changes in the spinal motor control. An axial load of 10% showed no significant changes. Rehabilitation should include high-axial-load exercise if needed in everyday living.

Indexed as

Biomechanical PhenomenaFemaleHumansLumbar VertebraeMaleReproducibility of ResultsStanding PositionWeight-BearingLoadLumbarSpineStiffnessThoracic

Identifiers

PMID33956197
PMCPMC8260401

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.