Relative deoxygenation in the vastus lateralis

Keith Kendrick; Britton Chance; Russ Richardson

doi:10.1117/12.154667

14 September 1993 Relative deoxygenation in the vastus lateralis

Keith Kendrick, Britton Chance, Russ Richardson

Proceedings Volume 1888, Photon Migration and Imaging in Random Media and Tissues; (1993) https://doi.org/10.1117/12.154667
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

A non-invasive, near-infrared tissue spectrophotometer has been previously described. The device utilizes the differential absorption characteristics of oxy-hemoglobin (HbO₂) and deoxy-hemoglobin (Hb) at 760 and 850 nm to indicate localized changes in tissue oxygenation. The present study was undertaken to examine the relative magnitude of vastus lateralis deoxygenation in highly-trained cyclists at maximal effort. A ramp exercise to exhaustion was immediately followed by a cuff ischemia to elicit a maximal Hb signal. All of the subjects exhibited further deoxygenation upon cuff ischemia; determined to be 63%, 69%, 72%, and 56% of maximal Hb signal. This suggests that there was incomplete depletion of oxygen supply in the vastus lateralis muscles of these subjects at exhaustion.

Citation Download Citation

Keith Kendrick, Britton Chance, and Russ Richardson "Relative deoxygenation in the vastus lateralis", Proc. SPIE 1888, Photon Migration and Imaging in Random Media and Tissues, (14 September 1993); https://doi.org/10.1117/12.154667

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