Abstract
Background: Carboxyhemoglobin dissociation rate strongly depends on blood acidity (Bohr's effect). Therefore CO concentration in exhaled air is increased as a result of lactate generation after intensive exercise.
Aim: Study of relationship between CO concentration in exhaled air and blood lactate concentration in athletes after intensive exercise.
Methods: CO concentration was measured by SMOKERLYZER® (Bedfont) with previous breath holding and blood lactate concentration was registered by ACCUTREND®Lactate (Roche Diagnostics) in 9 elite cyclists, mean (SD), age 25(2.8)yrs, height 176(4.5)cm, weight 76.5(5.8)kg, maximal oxygen uptake 65.6(4.5)ml/min/kg before and after training cycle-race.
Results: There was strong correlation between CO concentration ratio and lactate concentration. After training lactate concentration increased 3.5-fold from 2 to 7mmol/L and CO concenration increased 2.5-fold from 3 to 10ppm.
Conclusion: Our findings provide a basis for development of new non-invasive method for anaerobic threshold detection, which may be useful for elite athletes training programs.
- © 2014 ERS