Skeletal muscle architecture and aging: A comparison of ultrasound techniques and an assessment of intrarater reliability

IF 1.3 4区医学 Q4 PHYSIOLOGY Clinical Physiology and Functional Imaging Pub Date : 2024-04-14 DOI:10.1111/cpf.12882

Andrew C. D'Lugos, Nathan J. Skotak, Jacquelyn J. Faris, Nicholas T. Thomas, Corey E. Mazo, Jonathan J. Dickinson, Jessy G. Moore, Theresa M. Jorgensen, Jared M. Dickinson

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Abstract

Objective

To assess intrarater reliability of ultrasound-determined measurements of skeletal muscle characteristics across different measurement outcomes, imaging techniques, and age groups.

Methods

2D ultrasound images (B-mode) of the quadriceps were obtained from young (26 ± 4 year, n = 8 M, 8 F) and older (70 ± 7 year, n = 7 M, 5 F) adults on two occasions, separated by 6 ± 3 days. With participants in both standing and supine postures, images were collected from five anatomical sites along the anterior (two sites) and lateral (three sites) compartments of the thigh corresponding to 56%, 39%, and 22% (lateral only) of femur length. Images were analysed for muscle thickness, pennation angle, and echogenicity. Intraclass correlation coefficients (ICC) were used to assess reliability.

Results

Muscle thickness values were higher (p < 0.05) on images collected in the stand versus supine posture only for muscles of the anterior compartment, independent of age. Echogenicity values were higher (p < 0.05) in the vastus intermedius on images collected in the supine versus stand posture only in older adults. Pennation angle values were not impacted by imaging posture (p > 0.05). ICC values for thickness, echogenicity, and pennation angle were generally higher for analyses conducted on images collected in the supine versus stand posture. Imaging posture generated a greater difference in ICC values in the lateral versus anterior muscles and in older versus younger participants.

Conclusion

Our findings suggest that participant posture during imaging impacts the absolute values and intrarater reliability of ultrasound-determined muscle characteristics in a muscle-specific fashion, and this effect is greater in older compared to younger individuals.

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骨骼肌结构与衰老：超声波技术比较与内部可靠性评估

方法分两次从年轻人（26 ± 4 岁，n = 8 名男性，8 名女性）和老年人（70 ± 7 岁，n = 7 名男性，5 名女性）身上获取股四头肌的二维超声波图像（B 型），每次间隔 6 ± 3 天。研究人员采取站立和仰卧姿势，从大腿前侧（两个部位）和外侧（三个部位）的五个解剖部位收集图像，这些部位分别占股骨长度的 56%、39% 和 22%（仅外侧）。对图像进行了肌肉厚度、五连角和回声分析。结果在站立与仰卧姿势下采集的图像中，仅前部肌肉的肌肉厚度值较高（p < 0.05），与年龄无关。仅在老年人中，仰卧位与站立位采集的图像上中阔肌的回声值更高（p < 0.05）。彭氏角值不受成像姿势的影响（p > 0.05）。对仰卧位与站立位采集的图像进行分析时，厚度、回声性和垂线角的 ICC 值普遍较高。我们的研究结果表明，成像时参与者的姿势会以肌肉特异性的方式影响超声波确定的肌肉特征的绝对值和内部可靠性，而且这种影响在老年人身上比在年轻人身上更大。

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来源期刊

Clinical Physiology and Functional Imaging 医学-生理学

CiteScore

3.40

自引率

5.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Clinical Physiology and Functional Imaging publishes reports on clinical and experimental research pertinent to human physiology in health and disease. The scope of the Journal is very broad, covering all aspects of the regulatory system in the cardiovascular, renal and pulmonary systems with special emphasis on methodological aspects. The focus for the journal is, however, work that has potential clinical relevance. The Journal also features review articles on recent front-line research within these fields of interest. Covered by the major abstracting services including Current Contents and Science Citation Index, Clinical Physiology and Functional Imaging plays an important role in providing effective and productive communication among clinical physiologists world-wide.