Blood flow measurement of human skeletal muscle during various exercise intensity using diffuse correlation spectroscopy (DCS)

Yuya Murakami; Yumie Ono; Masashi Ichinose

doi:10.1117/12.2250718

17 February 2017 Blood flow measurement of human skeletal muscle during various exercise intensity using diffuse correlation spectroscopy (DCS)

Yuya Murakami, Yumie Ono, Masashi Ichinose

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Proceedings Volume 10059, Optical Tomography and Spectroscopy of Tissue XII; 100591Z (2017) https://doi.org/10.1117/12.2250718
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

We studied blood flow dynamics of active skeletal muscle using diffuse correlation spectroscopy (DCS), an emerging optical modality that is suitable for noninvasive quantification of microcirculation level in deep tissue. Seven healthy subjects conducted 0.5 Hz dynamic handgrip exercise for 3 minutes at intensities of 10, 20, 30, and 50 % of maximal voluntary contraction (MVC). DCS could detect the time-dependent increase of the blood flow response of the forearm muscle for continuous exercises, and the increase ratios of the mean blood flow through the exercise periods showed good correlation with the exercise intensities. We also compared blood flow responses detected from DCS with two different photon sampling rates and found that an appropriate photon sampling rates should be selected to follow the wide-ranged increase in the muscle blood flow with dynamic exercise. Our results demonstrate the possibility for utilizing DCS in a field of sports medicine to noninvasively evaluate the dynamics of blood flow in the active muscles.

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Yuya Murakami, Yumie Ono, and Masashi Ichinose "Blood flow measurement of human skeletal muscle during various exercise intensity using diffuse correlation spectroscopy (DCS)", Proc. SPIE 10059, Optical Tomography and Spectroscopy of Tissue XII, 100591Z (17 February 2017); https://doi.org/10.1117/12.2250718

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KEYWORDS

Blood circulation

Spectroscopy

Tissue optics

Blood

Diffusion

Sensors

Sports medicine

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