Abstract

SUZUKI, Flavio G. et al. Perceived exertion during swimming interval training at intensities below and above critical velocity . Rev. Port. Cien. Desp. [online]. 2007, vol.7, n.3, pp.299-307. ISSN 1645-0523.

The aim of the present study was to verify the effects of rest intervals and intensities in perceived exertion responses during swimming interval training. Eight individuals performed initially 100, 200 and 400 m bouts for the critical velocity (VC) and anaerobic work capacity (CTA) estimation. Additionally the subjects were submitted to four sessions of interval training comprised by 200 m bouts. It was conducted in two sessions at 95% and 110% of VC. The only difference between the sessions at the same intensity of exercise was the rest intervals of 20 or 40 s. At the final of each 200 m bout, the participants reported the perceived exertion through Borg scale. At 95% of VC there was not significant difference in perceived exertion responses between the 20 and 40 s rest intervals regimes. Nonetheless, at 110% of VC there were significant differences in the perceived exertion reported and in number of performed bouts (40 s = 5.7 ± 2.1 bouts; 20 s = 4.0 ± 1.0 bouts) between the rest intervals regimens. Therefore, the possible mechanism for the perceived exertion responses below and above the VC under different rest intervals regimens seems to be the utilization or not of CTA.

Keywords : swimming; critical velocity; perceived exertion.

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