Final blood lactate concentration after incremental test and aerobic performance

Author： Popov D. Missina S. Lemesheva Yu. Lyubaeva E. Borovik A. Vinogradova O.

ISSN： 0362-1197

Source： Human Physiology, Vol.36, Iss.3, 2010-05, pp. : 335-341

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Abstract

The goal of this study was to test the hypothesis that, in groups of highly trained endurance athletes (first and junior national teams), the final blood lactate concentration at maximum aerobic performance decreased as their training status increased. This study was performed with 20 physically active volunteers and 45 highly trained middle- and long-distance endurance athletes (speed skaters, triathletes, and cross-country skiers). Significant negative correlations (r = −0.59 to −0.87) between the final blood lactate concentration after incremental tests until exhaustion and aerobic performance (anaerobic threshold (AT)) were found only for the groups of highly trained endurance athletes, but not for the group of physically active subjects. It was shown for highly trained speed skaters that the final lactate concentration in their blood decreased and the oxygen consumption at AT increased with an increase in the volume of type I muscle fibers in the working muscle (r = −0.84 and r = 0.7, respectively).