Efeito agudo de diferentes atividades condicionantes sobre o desempenho do salto vertical: um estudo comparativo entre o exercício de força tradicional e baseado em velocidade

Abstract

This study compared the acute effect of different conditioning activities, using the smith machine squat, on vertical jump height, with high and moderate loads, varying volume. Thirteen trained women (27 ± 2,41 years; 59,3 ± 6,99 Kg; 158, 77 ± 5,93 cm of height; 26,17 ± 2,41 % of fat, com 7,61 ± 2,93 years of experience e relative RM (RM/massa corporal) of 1,47 ± 0,23 Kg), completed eight sessions – being the last four the experimental conditions (60% of 1RM with 10 or 30% velocity loss, 85% of 1RM for 3 repetitions and control). The variable analysed was the countermovement jump height, before and after the squat. The interval between the squat and the coutermovement jump was self-selected for each participant. Mixed ways ANOVA showed no significant differences between the experimental conditions. Cohen’s d effect size showed a small effect amongst all variables, with values of 0,056, 0,134 and 0,133 for the experimental conditions of 10 and 30% velocity loss and 85% of 1RM, respectively. Applying one set of smith machine squat with moderate loads and low and moderate velocity loss in women with strength training experience did not result in significant improvements in the subsequent vertical countermovement jump. Futhermore, it can be concluded that high loads with fixed volume also did not result in a statistical gain in the vertical jump.