CIAMS, Université Paris-Saclay, CEDEX, 91405 Orsay, France.
CIAMS, Université d'Orléans, 45067 Orléans, France.
Sensors (Basel). 2022 Jul 10;22(14):5165. doi: 10.3390/s22145165.
(1) Background: Near-infrared spectroscopy (NIRS) is an innovative and non-invasive technology used to investigate muscular oxygenation. The aim of this study is to assess the within- and between-session reliability of the NIRS Portamon (Artinis, Elst, Netherlands) device following three sets of induced muscle ischemia. (2) Methods: Depending on the experimental group (G1, G2 or G3), a cuff was inflated three times on the left upper arm to 50 mmHg (G1), systolic blood pressure (SBP) + 50 mmHg (G2) or 250 mmHg (G3). Maximum, minimum and reoxygenation rate values were assessed after each occlusion phase, using a Portamon device placed on the left brachioradialis. Reliability was assessed with intraclass correlation coefficient (ICC) value and ICC 95% confidence interval (CI-95%), coefficient of variation (CV) and standard error of measurement (SEM) (3) Results: Our results showed a good to excellent reliability for maximums and minimums within-session. However, the reoxygenation rate within sessions as well as measurements between sessions cannot predominantly show good reliability. (4) Conclusions: Multiple measurements of maximums and minimums within a single session appeared to be reliable which shows that only one measurement is necessary to assess these parameters. However, it is necessary to be cautious with a comparison of maximum, minimum and reoxygenation rate values between sessions.
(1) 背景：近红外光谱（NIRS）是一种创新的非侵入性技术，用于研究肌肉氧合。本研究的目的是评估在三种诱导性肌肉缺血后，NIRS Portamon（Artinis，Elst，荷兰）设备的内和会话间可靠性。
(2) 方法：根据实验组（G1、G2 或 G3）的不同，左上肢的袖带充气三次至 50mmHg（G1）、收缩压（SBP）+50mmHg（G2）或 250mmHg（G3）。在每次闭塞期后，使用放置在左肱桡肌上的 Portamon 设备评估最大、最小和再氧合率值。使用组内相关系数（ICC）值和 ICC 95%置信区间（CI-95%）、变异系数（CV）和测量标准误差（SEM）评估可靠性。
(3) 结果：我们的结果表明，在单次会话中，最大和最小值的内可靠性为良好到优秀。然而，再氧合率的会话内以及会话间的测量都不能主要显示出良好的可靠性。
(4) 结论：在单次会话中多次测量最大和最小值似乎是可靠的，这表明评估这些参数只需要进行一次测量即可。然而，在比较会话间的最大、最小和再氧合率值时需要谨慎。
