Scano A, Pirovano I, Manunza M E, Spinelli L, Contini D, Torricelli A, Re R
Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manifatturiero Avanzato (STIIMA), Consiglio Nazionale delle Ricerche, Via Previati 1/E Lecco, Italy e Via Alfonso Corti 12, Milan, Italy.
Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, Italy.
Biomed Opt Express. 2020 Dec 1;11(12):7357-7375. doi: 10.1364/BOE.403976.
The effect of sustained fatigue during an upper limb isometric exercise is presented to investigate a group of healthy subjects with simultaneous time-domain (TD) NIRS and surface electromyography (sEMG) recordings on the deltoid lateralis muscle. The aim of the work was to understand which TD-NIRS parameters can be used as descriptors for sustained muscular fatigue, focusing on the slow phase of this process and using median frequency (MF) computed from sEMG as gold standard measure. It was found that oxygen saturation and deoxy-hemoglobin are slightly better descriptors of sustained fatigue, than oxy-hemoglobin, since they showed a higher correlation with MF, while total-hemoglobin correlation with MF was lower.
本文展示了上肢等长运动期间持续疲劳的影响,该研究对一组健康受试者的三角肌外侧进行了同步时域(TD)近红外光谱(NIRS)和表面肌电图(sEMG)记录。这项工作的目的是了解哪些TD-NIRS参数可以用作持续肌肉疲劳的描述指标,重点关注这一过程的缓慢阶段,并将从sEMG计算出的中位频率(MF)作为金标准测量指标。研究发现,与氧合血红蛋白相比,氧饱和度和脱氧血红蛋白作为持续疲劳的描述指标略胜一筹,因为它们与MF的相关性更高,而总血红蛋白与MF的相关性较低。