Muscle oxygen saturation measured using "cyclic NIR signals" during exercise.
Muscle oxygen saturation measured using "cyclic NIR signals" during exercise.
复制标题
运动期间使用“循环近红外信号”测量肌肉氧饱和度。
DOI：
10.1007/978-1-4419-1241-1_26
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发表时间：
2010
影响因子：
--
通讯作者：
Leung TS
中科院分区：
文献类型：
--
作者：
Leung TS
提出了一种利用近红外光谱技术测量肌肉血氧饱和度的新方法。这种方法利用了在运动过程中看到的周期性NIRS信号，这些信号通常被认为是“运动伪影”。这种新的措施，我们称之为“循环SmO2”，有可能是受肌红蛋白，这是传统上被认为是无法区分的血红蛋白，使用近红外光谱技术。循环SmO2也有较少的假设比传统的SmO2测量使用时间，相位和空间分辨光谱方法。在一项自行车运动研究中，近红外光谱测量了11名受试者的股外侧肌。在轻度运动方案中，常规SmO2的组平均值为51.7 ± 4.3%，周期性SmO2的组平均值为56.0 ± 3.9%。随后立即进行剧烈运动方案，常规SmO2的组平均值降至42.6 ± 6.1%，循环SmO2的组平均值降至48.5 ± 5.6%。这一减少与普遍预期相符。循环SmO2是一种很有前途的肌肉氧合的新措施。
A new approach to measure muscle oxygen saturation (SmO2) using near infrared spectroscopy (NIRS) has been proposed in this paper. This approach exploits the cyclic NIRS signals seen during exercise which are often regarded as “movement artefacts”. This new measure, which we term the “cyclic SmO2”, has the potential to be less affected by the myoglobin which is traditionally believed to be indistinguishable from haemoglobin using NIRS techniques. The cyclic SmO2also has fewer assumptions than the conventional SmO2measured using time, phase and spatially resolved spectroscopy methods. In a cycling exercise study, NIRS measurements were made over the Vastus lateralis muscle of 11 subjects. In a light exercise protocol, the group mean of the conventional SmO2was 51.7 ± 4.3% and that of the cyclic SmO2was 56.0 ± 3.9%. It was immediately followed by a hard exercise protocol and the group mean of the conventional SmO2was reduced to 42.6 ± 6.1% and that of the cyclic SmO2to 48.5 ± 5.6%. The reduction agrees with the general expectation. The cyclic SmO2is a promising new measure of muscle oxygenation.
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