Response of VO2 and time to exhaustion during running at the speed associated to VO2max: applications in high-intensity aerobic training

Abstract

The objective of this study was to verify, in a cross-sectional design, the effect of aerobic training on the VO2 kinetic and time to exhaustion (Tlim) during severe exercise in running. Sixteen runners and eleven sedentary individuals performed the following tests on separate days: 1) incremental test for determination of VO2max and the intensity corresponding to VO2max (vVO2max) and; 2) all-out exercise bout performed at vVO2max to determine Tlim and the time to achieve and sustain VO2max (TAVO2max and TSVO2max, respectively). The aerobic indexes were higher in runners than in sedentary
subjects. The sedentary group presented higher Tlim and TAVO2max, however there was no difference in TSVO2max between groups. We may conclude that Tlim and TAVO2max were sensible to the aerobic training.