SciELO - Scientific Electronic Library Online

 
vol.12 issue2Reliability of the four series 15-second vertical jumping testGeographical dimensions of fibers from the soleum muscle in rats exercised on treadmill: the importance of the analysis by means of digitalized images author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Medicina do Esporte

Print version ISSN 1517-8692

Abstract

DE-OLIVEIRA, Fernando Roberto et al. Track test to assess the lactic ability in high level runners. Rev Bras Med Esporte [online]. 2006, vol.12, n.2, pp. 99-102. ISSN 1517-8692.  http://dx.doi.org/10.1590/S1517-86922006000200009.

The anaerobic ability (AnA) is given by the sum of the alactic and lactic (AlA) ability. The cycloergonometer has been used at the maximal 30-second strength (max30) to the AnA approach (mean power and fatigue index). Presently, the AnA is not directly measured, and it is required an operational approaching, such as the measurement of the performance and the blood lactate concentration ([La]). In high-level velocity runners, it is expected that on long-endurance, that is, 60 seconds (max30) strength there would be a higher AnA demand, and aiming the ecological validity, it must be applied on the track. The purpose of this study was to make a comparison between the derived variables of the (max30) and (max60) in runners. Eight male national and international 19-27 years old athletes were submitted to max30 and max60 running tests on an official synthetic track, where it was performed an arterialized blood collection from the ear lobule immediately 1, 3, 5, 7.5, and 10 minutes after the strength. To make a comparison between the max30 and the max60, it was used the t-Student test and the simple Pearson's correlation to check the association between variables. The lactate concentrations were significantly higher at max60 than at max30 (20.9 ± 1.2 vs. 18.2 ± 1.9 mM, p < 0.05). Oppose to this, the mean velocities were significantly lower (7.9 ± 0.2 vs. 9.1 ± 0.2 m.s-1, respectively). Significant correlations were found between max30 and max60 (r = 0.92; p < 0.05). However, it was not seen the same as to the lactate (r = 0.62; p > 0.05). According to these athletes' characteristics, who are highly tolerant to elevated [La], the derived test variables with duration/distance close to the 60 s/500 m seem to be more adequate as AnA indexes.

Keywords : Anaerobic test; Blood lactate; Bioenergetics.

        · abstract in Portuguese | Spanish     · text in English | Portuguese     · pdf in English | Portuguese