期刊
JOURNAL OF CACHEXIA SARCOPENIA AND MUSCLE
卷 12, 期 4, 页码 913-920出版社
WILEY
DOI: 10.1002/jcsm.12721
关键词
absorptiometry; photon; body composition; paraspinal muscles; sarcopenia; spine
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2019R1C1C100632]
In this study, lateral whole-body dual-energy X-ray absorptiometry (lateral DXA) was found to positively correlate with three-dimensional magnetic resonance imaging (3D MRI) in assessing lumbar paraspinal muscle (LPM) mass in older adults. Lateral DXA may be a potential substitute for the cross-sectional area measurement of LPM mass and is associated with other muscle-related factors. Further studies are needed to validate the efficacy of lateral DXA technique in assessing LPM mass.
Background Here, we aimed to propose novel lateral whole-body dual-energy X-ray absorptiometry (lateral DXA) as a simple tool for measuring spinal muscle mass and investigate the feasibility of lateral DXA to measure lumbar paraspinal muscle (LPM) mass compared with lumbosacral spine three-dimensional magnetic resonance imaging (3D MRI). Methods Twenty consecutive participants were enrolled from a prospective observational cohort (SarcoSpine study). Lateral DXA was scanned with each participant in the lateral decubitus position. The region of interest was defined to analyse the LPM mass. LPM total volume, LPM cross-sectional area at the L3 mid-vertebra and L4/5 mid-disc levels and each signal intensity were measured by 3D MRI. Isokinetic and isometric back extensor muscle strengths as well as back extensor endurance were examined. The correlation between lateral DXA-based mass (weight) and 3D MRI-based LPM volume was analysed. Results The mean age of the 20 participants (15 women, 5 men) was 72.2 +/- 4.9 years. LPM mass by lateral DXA was positively correlated with LPM volume by 3D MRI (beta = 0.333, r = 0.692, p < 0.001) and negatively correlated with signal intensity of the total LPM (beta = -0.263, r = -0.530, p = 0.016). LPM mass was also correlated with appendicular limb muscle mass, handgrip strength and gait speed as well as back extensor endurance (r = 0.620, p = 0.004). Conclusions Our data suggest that LPM mass assessed by lateral DXA was positively correlated with LPM volume by 3D MRI in older adults. Lateral DXA may be a potential substitute for the cross-sectional area measurement of LPM mass. Further studies are required to validate this lateral DXA technique.
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