Laboratory of Exercise Research, School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
J Strength Cond Res. 2019 Dec;33(12):3353-3360. doi: 10.1519/JSC.0000000000003063.
Lanferdini, FJ, Manganelli, BF, Lopez, P, Klein, KD, Cadore, EL, and Vaz, MA. Echo intensity reliability for the analysis of different muscle areas in athletes. J Strength Cond Res 33(12): 3353-3360, 2019-Skeletal muscles' echo intensity (EI) is used as a parameter to evaluate muscle damage and muscle quality after exercise or training. However, recent muscle EI studies have used regions of interest (ROIs) of different sizes for assessing muscle damage and muscle quality, which may lead to different results if the different ROIs from the same muscle are not reliable. Although a maximum rectangular ROI (RET-ROI), included in the muscles' anatomical cross-sectional area, can be used to represent the maximum muscle ROI (MAX-ROI), no studies were found that investigated the reliability of the evaluations of different ROIs for the EI of superficial vs. deep muscles of the thigh. In addition, no studies have evaluated different ROIs in cyclists, at different days and analyzed by different raters. The aim of this study was to evaluate the EI reliability of rectus femoris (RF) and vastus intermedius (VI) muscles of cyclists. Twenty cyclists visited the laboratory 4 times for the evaluation of RF and VI muscles transversal ultrasound images. Echo intensity was determined from grayscale mean values by 2 examiners who performed the analysis with 3 different ROIs: MAX-ROI, RET-ROI, and 1-cm ROI (1CM-ROI). The between-ROI EI data reliability showed a strong correlation in both RF (r ≥ 0.79) and VI (r ≥ 0.87) muscles. Bland-Altman tests demonstrated high agreement among RF ROI muscle areas (p > 0.05), with no agreement between the VI areas (p < 0.05). Only the RF muscle MAX-ROI, RET-ROI, and 1CM-ROI areas are similar for EI analysis, with no similarities for the same VI muscle areas.
兰费尔迪尼、F.J.、曼加内利、B.F.、洛佩斯、P.、克莱因、K.D.、卡多雷、E.L.和瓦斯、M.A.。运动员不同肌肉区域分析的回声强度可靠性。《力量与调节研究杂志》33（12）：3353-3360，2019 年-骨骼肌的回声强度（EI）被用作评估运动或训练后肌肉损伤和肌肉质量的参数。然而，最近的肌肉 EI 研究使用了不同大小的感兴趣区域（ROI）来评估肌肉损伤和肌肉质量，如果同一肌肉的不同 ROI 不可靠，可能会导致不同的结果。虽然最大矩形 ROI（RET-ROI）包含在肌肉的解剖横截面积内，可以用于代表最大肌肉 ROI（MAX-ROI），但没有研究发现评估大腿浅表和深部肌肉不同 ROI 的 EI 的可靠性。此外，没有研究评估过不同的 ROI 在不同日子的自行车运动员中的应用，也没有分析不同的评价者。本研究旨在评估自行车运动员股直肌（RF）和股中间肌（VI）的 EI 可靠性。20 名自行车运动员 4 次前往实验室评估 RF 和 VI 肌肉的横切面超声图像。回声强度通过 2 名检查者从灰度平均值确定，他们使用 3 种不同的 ROI 进行分析：MAX-ROI、RET-ROI 和 1cm ROI（1CM-ROI）。在 RF（r≥0.79）和 VI（r≥0.87）肌肉中，ROI 间 EI 数据的可靠性显示出很强的相关性。Bland-Altman 检验表明 RF ROI 肌肉区域之间具有高度一致性（p>0.05），而 VI 区域之间没有一致性（p<0.05）。只有 RF 肌肉的 MAX-ROI、RET-ROI 和 1CM-ROI 区域适合 EI 分析，而相同的 VI 肌肉区域则不相似。
