Abstract
Abstract The purposes of this study were twofold: to determine if fingertip blood could be used to provide a valid estimate of venous blood hematocrit (hct) and hemoglobin (hgb) following maximal and submaximal work; and to determine if the Coulter counter is an appropriate instrument for the determination of hct following relatively short-term maximal work in normally hydrated subjects. Twenty-two male subjects performed a continuous incremental work task to voluntary cessation on a bicycle ergometer, during which [Vdot]O2 was continuously monitored. Subjects also exercised for 15 min at 1/3 and at 2/3 of [Vdot]O2 max. Before and after each work protocol, samples of fingertip and venous blood were drawn simultaneously, and hct and hgb were determined on a Coulter counter. Regression equations for prediction of venous blood values from fingertip blood after exercise are presented. Hct from antecubital venous blood following maximal exercise in each of 12 additional subjects was determined by the Coulter c...
Published Version
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