In:
The British Journal of Radiology, British Institute of Radiology, Vol. 95, No. 1134 ( 2022-06-01)
Abstract:
Although sarcopenia and osteoporosis are inter-related conditions that are common with advancing age, few studies have explored relationships between muscle quality and bone mineral density (BMD). We investigated age- and sex-specific paraspinal muscle fat infiltration (MFI), muscle cross-sectional area (CSA), and spine volumetric BMD (vBMD) in healthy Chinese adults. Methods: 605 healthy adults aged 20–59 years (340 women, mean age 39.2 years; 265 men, mean age 38.8 years) had axial T 2 WI MRI imaging of the lumbar spine and CSA (cm 2 ) and MFI (%) were measured in the psoas and multifidus and erector spinae (MF-ES) muscles (L3–L4). MFI measurements were calibrated against a region of interest in an adjacent area of subcutaneous pure fat. L2–L4 vBMD was measured by quantitative CT. Age- and sex-specific subgroups were compared using the Mann–Whitney test. Multiple regression was used to test independent associations of MFI and CSA with vBMD. Results: Females had lower CSA and higher MFI than males in both the psoas and MF-ES muscles (p 〈 0.001). In females and males, MF-ES MFI increased with age (p 〈 0.001) and in females age-related increases were observed for the psoas muscles (p 〈 0.05). Greater fat infiltration of the MS-ES muscle unit was associated with lower vBMD in both sexes (p 〈 0.001) but not with CSA. Following adjustment for demographic variables and CSA, MS-ES MFI remained predictive of vBMD (β = −0.408 to −0.157, p 〈 0.001). Conclusion: We have demonstrated that, independent of CSA and demographic variables, MFI of the MF-ES muscles is predictive of lower lumbar spine vBMD in both sexes. Advances in knowledge: This is the first study to demonstrate that, independent of muscle size and demographic variables, MFI of the paraspinal MF-ES muscles is predictive of lower lumbar spine vBMD in both sexes.
Type of Medium:
Online Resource
ISSN:
0007-1285
,
1748-880X
DOI:
10.1259/bjr.20210371
Language:
English
Publisher:
British Institute of Radiology
Publication Date:
2022
detail.hit.zdb_id:
1468548-6
Permalink