Univ. Bern, Switzerland.
Fortiori Design, LLC, United States.
J Biomed Opt. 2019 Nov;24(11):1-11. doi: 10.1117/1.JBO.24.11.115001.
Near-infrared spectroscopy (NIRS) to monitor muscle oxygen saturation (SmO) is rapidly expanding into applied sports settings. However, the technology is limited due to its inability to convey quantifiable values. A test battery to assess reliability and validity of a 0% to 100% scale modeled by a commercially available NIRS device was established. This test battery applies a commonly used technique, the arterial occlusion method (AOM) to assess repeatability, reproducibility, and face validity. A total of 22 participants completed the test battery to scrutinize the 0% to 100% scale provided by the device. All participants underwent repeated AOM tests in passive and active conditions. The SmO minimum and SmO maximum values were obtained from the AOM and were used in the subsequent analysis. Repeatability and reproducibility were tested for equivalency and Bland-Altman plots were generated. Face validity was assessed by testing SmO values against an ; defined threshold for mixed venous blood during AOM response. The device exhibits an appropriately functional 0% to 100% scale that is reliable in terms of repeatability and reproducibility. Under the conditions applied in the test battery design, the device is considered valid for application in sports.
近红外光谱（NIRS）监测肌肉氧饱和度（SmO2）技术在应用于运动领域方面迅速发展。然而，由于其无法提供可量化的值，该技术受到限制。本研究建立了一个测试电池，用于评估一种商业上可用的 NIRS 设备模型化的 0%至 100%范围的可靠性和有效性。该测试电池采用了一种常用的技术，即动脉阻塞法（AOM）来评估重复性、再现性和表面有效性。共有 22 名参与者完成了该测试电池，以仔细检查设备提供的 0%至 100%范围。所有参与者都在被动和主动条件下接受了重复的 AOM 测试。从 AOM 中获得 SmO2 最小值和 SmO2 最大值，并在后续分析中使用。测试了重复性和再现性的等效性，并生成了 Bland-Altman 图。通过在 AOM 反应期间将 SmO2 值与混合静脉血的定义阈值进行比较，评估了表面有效性。该设备具有适当功能的 0%至 100%范围，在重复性和再现性方面具有可靠性。在测试电池设计中应用的条件下，该设备被认为可有效应用于运动领域。
