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Proceedings Paper

Relative deoxygenation in the vastus lateralis
Author(s): Keith Kendrick; Britton Chance; Russ Richardson
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Paper 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.

Paper Details

Date Published: 14 September 1993
PDF: 6 pages
Proc. SPIE 1888, Photon Migration and Imaging in Random Media and Tissues, (14 September 1993); doi: 10.1117/12.154667
Show Author Affiliations
Keith Kendrick, Univ. of Pennsylvania School of Medicine (United States)
Britton Chance, Univ. of Pennsylvania School of Medicine (United States)
Russ Richardson, Univ. of California/San Diego (United States)

Published in SPIE Proceedings Vol. 1888:
Photon Migration and Imaging in Random Media and Tissues
Britton Chance; Robert R. Alfano, Editor(s)

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