1 January 1998 Validation of measurement protocols to assess oxygen consumption and blood flow in the human forearm by near-infrared spectroscopy
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Abstract
Near infrared spectroscopy (NIRS) has been used to monitor oxygenation changes in muscle. Quantitative values for O2 consumption, blood flow and venous saturation have been reported by several investigators. The amount of these measurements is, however, still limited and complete validation has not yet been established. The aim of this study was to investigate the different NIRS methods to calculate O2 consumption (VO2) and forearm blood flow (FBF) and to validate the data with the accepted method of strain-gauge plethysmography and blood sampling. Thirteen subjects were tested in rest and during static isometric handgrip exercise at 10% MVC. The NIRS optodes were positioned on the flexor region of the arm. A significant correlation was found between plethysmograph data and NIRS [tHb] during venous occlusion in rest (r EQ 0.925 - 0.994, P < 0.05) as well as during exercise (r equals 0.895 - 0.990, P < 0.05). No correlation was found, however, for the calculated FBF and VO2 values between NIRS and the combination of plethysmography and blood sampling. In rest nor during exercise. It seems that although NIRS is a good qualitative monitoring technique, quantification is difficult due to the great variability that is found between the subjects.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mireille C. P. Van Beekvelt, Mireille C. P. Van Beekvelt, Willy N.J.M. Colier, Willy N.J.M. Colier, Baziel G. M. van Engelen, Baziel G. M. van Engelen, Maria T. E. Hopman, Maria T. E. Hopman, Ron A. Wevers, Ron A. Wevers, Berend Oeseburg, Berend Oeseburg, } "Validation of measurement protocols to assess oxygen consumption and blood flow in the human forearm by near-infrared spectroscopy", Proc. SPIE 3194, Photon Propagation in Tissues III, (1 January 1998); doi: 10.1117/12.301044; https://doi.org/10.1117/12.301044
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