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We have evaluated the potential of near-infrared spectroscopy (NIRS) as a technique for in vivo measurement of fatigue during exercise in humans. By using 2D correlation spectroscopy, lactate was identified as the primary specie that was monitored by the in vivo measurements. Estimates and calibration of the lactate concentration by NIRS was made using partial least squares (PLS) regression analysis...
We have evaluated the potential of near-infrared spectroscopy (NIRS) as a technique for rapid analysis of lactate in whole blood. To test the NIRS technique, a comparison was made with a standard clinical method using whole blood samples taken from five exercising human subjects at three different stage of exercise. To expand lactate concentration within the physiological range, standard additions...
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