Near-infrared spectroscopy measurement of blood oxygenation content and its application in sports practice

Guodong Xu; Hui Gong; Xinfa Ge; Qingming Luo

doi:10.1117/12.546566

8 December 2003 Near-infrared spectroscopy measurement of blood oxygenation content and its application in sports practice

Guodong Xu, Hui Gong, Xinfa Ge, Qingming Luo

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Proceedings Volume 5254, Third International Conference on Photonics and Imaging in Biology and Medicine; (2003) https://doi.org/10.1117/12.546566
Event: Third International Conference on Photonics and Imaging in Biology and Medicine, 2003, Wuhan, China

Abstract

To research the change characteristics of blood oxygenation content in skeletal muscle, the change regularity between blood oxygenation content and exercise intensity as well as HbO₂ and blood lactate acid while taking incremental exercises, we took an in vivo, real-time and continuous measurement on the blood oxygenation content of eight sportsmen when they did incremental exercises of five degrees on a power bicycle using a portable tissue oximeter which is based on the principle of near-infrared spectroscopy(NIRS), simultaneously, we detected the blood lactate acid of subjects after each degree of incremental physical load instantly using a blood lactate analysis equipment. The results showed that the content of HbO₂ descended regularly while that of Hb ascended; blood volume decreased; and the density of lactate increased as the intensity of exercises was heightened. The statistics analyses showed that the relationship between HbO₂ and blood lactate is rather close (correlation coefficient r=-0.918). With this discovery, a theoretical basis in measuring the relative change of blood oxygenation content non-invasively was evidenced, and a novel technology for assessing the physical situation of sportsman, grasping sports density and evaluating the training effect could be imported.

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Guodong Xu, Hui Gong, Xinfa Ge, and Qingming Luo "Near-infrared spectroscopy measurement of blood oxygenation content and its application in sports practice", Proc. SPIE 5254, Third International Conference on Photonics and Imaging in Biology and Medicine, (8 December 2003); https://doi.org/10.1117/12.546566

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KEYWORDS

Blood

Near infrared spectroscopy

Oxygen

Photonics

Tissues

Biology

Biomedical optics

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