Abstract
Aim. Carboxyhemoglobin dissociation rate strongly depends on the blood acidity (Bohr's effect). Therefore, CO concentration in the exhaled air increases as a result of lactate production after highintensity exercise. We studied a relationship between CO concentration in the exhaled air and lactate concentration in the blood after highintensity exercise in athletes. Methods . CO concentration was measured by Smokerlyzer® (Bedfont Scientific Ltd, GB) with previous breath hold; lactate concentration was measured by Accutrend® Lactate (Roche Diagnosics GmbH, Germany). Results. Nine elite cyclists were involved, mean (± SD) age, 25.0 ± 2.8 years; mean height, 175.0 ± 4.5 cm; mean weight, 76.5 ± 5.8 kg; the maximal oxygen uptake, 65.6 ± 4.5 ml / min / kg before and after cyclerace training. CO concentration ratio was significantly related to lactate concentration. After the training, there were 3.5fold increase in lactate concentration (from 2 to 7 mmol / L) and 2.5fold increase in CO concentration (from 3 to 10 ppm). Conclusion . Our findings provide a basis for development of novel noninvasive express methods for anaerobic threshold detection and could be useful in elite athletes training, fitness and aerobics.
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