O efeito de diferentes tempos de fase excêntrica na velocidade e na potência da fase concêntrica do supino paralímpico competitivo

Abstract

Different execution times are determining factors in the performance effects of movements. Numerous studies have already demonstrated that shorter eccentric phase times yield better results in the concentric phase. However, the studies that investigated this issue in the bench press were conducted without pause and technical criteria. The aim of this study was analyze the effect of different eccentric cadences on power and velocity during the concentric phase in Paralympic bench press. Eight female athletes between 18 and 40 years of age (mean 28.3 ± 6.5) with an average relative strength of 1.4 ± 0.5 and five male athletes between 25 and 45 years of age (mean 32.6 ± 7.9) with an average relative strength of 1.5 ± 0.3 participated in the study. Participants performed two sets at 80% of 1RM with different cadences: A/0/X/0 (EXCASP), A/P/X/0 (EXCAUT), 2/P/X/0 (EXCRAP), 4/P/X/0 (EXCMED), 6/P/X/0 (EXCLEN). An additional set with only concentric phase was performed 0/0/X/0(CONPUR). Kinematic analysis showed that longer eccentric phase times resulted in worse velocity and power outcomes. Moreover, when the eccentric phase is equal or longer than 2s and there is a pause between the phases, the potentiating effect of the stretch-shortening cycle is attenuated almost completely.