Ishida Hiroshi, Suehiro Tadanobu, Suzuki Keita, Watanabe Susumu
Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki City, 701-0193, Japan.
Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki City, 701-0193, Japan.
J Bodyw Mov Ther. 2018 Jul;22(3):657-660. doi: 10.1016/j.jbmt.2017.12.005. Epub 2017 Dec 6.
This study aimed to assess the intra and interrater reliability of transducer tilt during the ultrasound (US) measurements of the muscle thickness and the echo intensity of the rectus femoris muscle (RF). Fourteen healthy male subjects (20.8 ± 0.8 years) participated in this study. The transducer tilt was measured using a digital angle gauge (°) during US. Two experimenters took two images to measure the muscle thickness (mm) and the echo intensity (a.u.: arbitrary unit). The intra and interclass correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable change (MDC) were also calculated. These measurements were immediately repeated. The ICC for the intrarater reliability for the transducer tilt, muscle thickness, and echo intensity were 0.96 (SEM: 0.9°, MDC: 2.6°), 0.99 (SEM: 0.4 mm, MDC: 0.1 mm), and 0.97 (SEM: 0.6 a.u.
, MDC: 1.7 a.u.), respectively. The ICC for the interrater reliability for the transducer tilt, muscle thickness, and echo intensity were 0.40 (SEM: 4.0°, MDC: 11.1°), 0.96 (SEM: 0.7 mm, MDC: 2.0 mm), and 0.95 (SEM: 0.9 a.u.
, MDC: 2.4 a.u.), respectively. The intrarater reliability of the transducer tilt was reliable, but the interrater reliability was questionable. Meanwhile, both the intra- and interrater reliability of the muscle thickness and the echo intensity were reliable.
本研究旨在评估在超声（US）测量股直肌（RF）肌肉厚度和回声强度过程中，换能器倾斜度的观察者内和观察者间可靠性。14名健康男性受试者（20.8±0.8岁）参与了本研究。在超声检查期间，使用数字角度仪（°）测量换能器倾斜度。两名实验者拍摄了两张图像，以测量肌肉厚度（mm）和回声强度（任意单位：a.u.）。还计算了组内和组间相关系数（ICC）、测量标准误差（SEM）和最小可检测变化（MDC）。这些测量立即重复进行。换能器倾斜度、肌肉厚度和回声强度的观察者内可靠性的ICC分别为0.96（SEM：0.9°，MDC：2.6°）、0.99（SEM：0.4mm，MDC：0.1mm）和0.97（SEM：0.6a.u.，MDC：1.7a.u.）。换能器倾斜度、肌肉厚度和回声强度的观察者间可靠性的ICC分别为0.40（SEM：4.0°，MDC：11.1°）、0.96（SEM：0.7mm，MDC：2.0mm）和0.95（SEM：0.9a.u.，MDC：2.4a.u.）。换能器倾斜度的观察者内可靠性可靠，但观察者间可靠性存在疑问。同时，肌肉厚度和回声强度的观察者内和观察者间可靠性均可靠。
