Resumo

BERTUZZI, Rômulo Cássio de Moraes et al. Is possible to predict running economy using maximal incremental exercise test?. Rev. bras. educ. fís. esporte (Impr.) [online]. 2010, vol.24, n.3, pp.373-378. ISSN 1807-5509.  https://doi.org/10.1590/S1807-55092010000300008.

The purpose of the present study was to investigate the association between running economy (RE) and the slope of the regression line obtained as the individual relationship between oxygen uptake and the corresponding intensity in the incremental test (EC_INCLINA). Sixteen recreational long-distance runners (age 32 ± 7 years, body mass 70,0 ± 6.7 kg, height 173.3 ± 5.0 cm, VO₂max 57.9 ± 5.8 ml·kg^-1·min^-1) performed a progressive incremental test and two submaximal workload tests (at 12 km·h^-1 and 90% second ventilatory threshold) to determine the RE. There was significant correlation between EC_INCLINA and RE measured at 12 km·h^-1 (r = 0.49; p = 0.054) and at 90% second ventilatory threshold (r = 0.55; p = 0.027). In addition, EC_INCLINA also was negatively correlated with peak blood lactate (r = -0.75; p = 0.001) and peak respiratory exchange rate (r = -0.80; p < 0.001). These findings suggest that EC_INCLINA would be an alternative parameter employed to determine the endurance performance in recreational long-distance runners.

Palavras-chave : Maximal oxygen uptake; Blood lactate; Respiratory exchange rate.

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