Reliability of Ultrasound Shear Wave Elastography for Evaluating Psoas Major and Quadratus Lumborum Stiffness: Gender and Physical Activity Effects

弹性成像 超声波 刚度 医学 肌肉僵硬 置信区间 核医学 标准误差 可靠性(半导体) 超声科 超声成像 外科 数学 内科学 材料科学 放射科 物理 统计 功率(物理) 量子力学 复合材料
作者
Emma Zhou,Arnold Y. L. Wong,Yong‐Ping Zheng,King Hei Stanley Lam,Siu Ngor Fu
出处
期刊:Ultrasound in Medicine and Biology [Elsevier]
卷期号:50 (4): 564-570 被引量:2
标识
DOI:10.1016/j.ultrasmedbio.2023.12.021
摘要

Abstract

Objective

We aimed to assess the reliability of quantifying psoas major (PM) and quadratus lumborum (QL) stiffness with ultrasound shear wave elastography (SWE), and to explore the effects of gender and physical activity on muscle stiffness.

Methods

Fifty-two healthy participants (18–32 y) were recruited. To determine reliability, 29 of them underwent repeated SWE measurements of PM and QL stiffness by an operator on the same day. The intra-class correlation coefficients (ICC3,1), standard error of measurement (SEM) and minimal detectable change with 95% confidence interval (MDC95) were calculated. The rest participants underwent a single measurement. Two-way MANCOVA was conducted for the effects of gender and physical activity on muscle stiffness.

Results

The observed reliability for PM (ICC3,1 = 0.89–0.92) and QL (ICC3,1 = 0.79–0.82) were good-to-excellent and good, respectively. The SEM (kPa) was 0.79–1.03 and 1.23–1.28, and the MDC95 (kPa) was 2.20–2.85 and 3.41–3.56 for PM and QL, respectively. After BMI adjustment, both gender (PM: F=10.15, p = 0.003; QL: F=18.07, p < 0.001) and activity level (PM: F=5.90, p = 0.005; QL: F=6.33, p = 0.004) influenced muscle stiffness. The female and inactive groups exhibited higher stiffness in both muscles.

Conclusion

SWE is reliable for quantifying the stiffness of PM and QL. Female and physical inactivity may elevate PM and QL stiffness, underscoring the importance of accounting for these factors in muscle stiffness investigations. Larger prospective studies are needed to further elucidate their effects.
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