Dependence of trunk muscle size and position on age, height, and weight in a multi-ethnic cohort of middle-aged and older men and women
Journal of Biomechanics, ISSN: 0021-9290, Vol: 157, Page: 111710
2023
- 1Citations
- 13Captures
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Metrics Details
- Citations1
- Citation Indexes1
- Captures13
- Readers13
- 13
Article Description
Trunk muscle size and location relative to the spine are key factors affecting their capacity to assist in trunk movement, strength, and function. There remains limited information on how age, weight and height affect these measurements across multiple spinal levels, and prior studies had limited samples in terms of size and ethnicity. In this study, we measured trunk muscles in coronal plane slices at T4 – L4 of CT scans acquired in 507 participants, aged 40–90 years, from the community-based Framingham Heart Study. Mixed-effects linear regressions, stratified by sex, determined the contributions of age, height and weight, to muscle cross-sectional area (CSA), the distance from the vertebral body centroid (CD), and the in-plane angle of the line between the vertebral body and the muscle centroids (CA). Muscle CSA decreased with higher age by an average of −0.8% per year, but weight (average 0.8% per kg) and height (average −0.05% per cm) had mixed results, with both positive and negative effects depending on muscle group and level. Muscle CD increased with weight by an average of 0.3% per kg, but had mixed effects for age (average 0.8% per year) and height (average 0.1% per cm). Muscle CA had mixed associations with age (average 0.05% per year), weight (average 0.01% per kg) and height (average −0.05% per cm). A prediction program created with these results provides a simple approach for estimating probable values for trunk muscle size and position in the absence of medical imaging.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0021929023002798; http://dx.doi.org/10.1016/j.jbiomech.2023.111710; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85164301307&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/37437459; https://linkinghub.elsevier.com/retrieve/pii/S0021929023002798; https://dx.doi.org/10.1016/j.jbiomech.2023.111710
Elsevier BV
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