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Changes in lumbar muscle diffusion tensor indices with age
Weedall, Andrew Hattersley, John Diokno, Michael Hutchinson, Charles E. Wilson, Adrian J. Wayte, Sarah C.
Weedall, Andrew
Hattersley, John
Diokno, Michael
Hutchinson, Charles E.
Wilson, Adrian J.
Wayte, Sarah C.
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Epub Date
Issue Date
2024-01-13
Submitted date
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Abstract
Objective
To investigate differences in diffusion tensor imaging (DTI) parameters and proton density fat fraction (PDFF) in the spinal muscles of younger and older adult males.
Methods
Twelve younger (19-30 years) and 12 older (61-81years) healthy, physically active male participants underwent T1W, T2W, Dixon and DTI of the lumbar spine. The eigenvalues (λ1, λ2, and λ3), fractional anisotropy (FA), and mean diffusivity (MD) from the DTI together with the PDFF were determined in the multifidus, medial and lateral erector spinae (ESmed, ESlat), and quadratus lumborum (QL) muscles. A two-way ANOVA was used to investigate differences with age and muscle and t-tests for differences in individual muscles with age.
Results
The ANOVA gave significant differences with age for all DTI parameters and the PDFF (P < .01) and with muscle (P < .01) for all DTI parameters except for λ1 and for the PDFF. The mean of the eigenvalues and MD were lower and the FA higher in the older age group with differences reaching statistical significance for all DTI measures for ESlat and QL (P < .01) but only in ESmed for λ3 and MD (P < .05).
Conclusions
Differences in DTI parameters of muscle with age result from changes in both in the intra- and extra-cellular space and cannot be uniquely explained in terms of fibre length and diameter.
Advances in knowledge
Previous studies looking at age have used small groups with uneven age spacing. Our study uses two well defined and separated age groups.
Citation
Weedall, A.D., Dallaway, A., Hattersley, J. et al. (2024) Changes in lumbar muscle diffusion tensor indices with age. BJR Open, 6(1), tzae002,.
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PubMed ID
38371493 (pubmed)
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Type
Journal article
Language
en
Description
© 2024 The Authors. Published by OUP. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.1093/bjro/tzae002
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ISSN
2513-9878
EISSN
2513-9878
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Licence for published version: Creative Commons Attribution 4.0 International