EA 4334 Motricité, Interactions, Performance, Université de Nantes, Nantes, France.
Physiol Meas. 2012 Mar;33(3):N19-28. doi: 10.1088/0967-3334/33/3/N19. Epub 2012 Feb 28.
The aim of the present study was to assess the reliability of shear elastic modulus measurements performed using supersonic shear imaging (SSI) in nine resting muscles (i.e. gastrocnemius medialis, tibialis anterior, vastus lateralis, rectus femoris, triceps brachii, biceps brachii, brachioradialis, adductor pollicis obliquus and abductor digiti minimi) of different architectures and typologies. Thirty healthy subjects were randomly assigned to the intra-session reliability (n = 20), inter-day reliability (n = 21) and the inter-observer reliability (n = 16) experiments. Muscle shear elastic modulus ranged from 2.99 (gastrocnemius medialis) to 4.50 kPa (adductor digiti minimi and tibialis anterior). On the whole, very good reliability was observed, with a coefficient of variation (CV) ranging from 4.6% to 8%, except for the inter-operator reliability of adductor pollicis obliquus (CV = 11.5%). The intraclass correlation coefficients were good (0.871 ± 0.045 for the intra-session reliability, 0.815 ± 0.065 for the inter-day reliability and 0.709 ± 0.141 for the inter-observer reliability). Both the reliability and the ease of use of SSI make it a potentially interesting technique that would be of benefit to fundamental, applied and clinical research projects that need an accurate assessment of muscle mechanical properties.
本研究旨在评估使用超声剪切波成像（SSI）在 9 块不同结构和类型的静息肌肉（即腓肠肌内侧、胫骨前肌、股外侧肌、股直肌、肱三头肌、肱二头肌、肱桡肌、拇指内收肌斜头和小指外展肌）中测量剪切弹性模量的可靠性。30 名健康受试者被随机分配到内-会话可靠性（n = 20）、日内可靠性（n = 21）和观察者间可靠性（n = 16）实验中。肌肉剪切弹性模量范围为 2.99kPa（腓肠肌内侧）至 4.50kPa（内收肌斜头和胫骨前肌）。总体而言，观察到非常好的可靠性，变异系数（CV）范围为 4.6%至 8%，除了拇指内收肌斜头的操作者间可靠性（CV = 11.5%）。组内相关系数良好（内-会话可靠性为 0.871 ± 0.045，日内可靠性为 0.815 ± 0.065，观察者间可靠性为 0.709 ± 0.141）。SSI 的可靠性和易用性使其成为一种有潜力的有趣技术，它将有益于需要准确评估肌肉力学特性的基础、应用和临床研究项目。
