Comportamento da velocidade da fase excêntrica sobre o desempenho da ação concêntrica subsequente em mulheres jovens e idosas

Abstract

The purpose of this master's dissertation was to investigate the influence of eccentric action velocity on subsequent concentric phase performance in trained elderly and young adult mass= 64.1 ± 6.9 kg) and 16 young adult women (age= 23.1 ± 2.1 years; height= 1.7 ± 0.3 meters; body mass= 61.2 ± 10.2 kg) were randomized using software (randomizer.org.br) to perform two conditions and intensities: (1) high velocity (HV) and (2) moderate velocity (MV) executed on the Smith machine bench press using 30% and 60% of 1RM to evaluate mean propulsive velocity (MPV), peak velocity (PV), and mean power (MP) performance. For all analyses, two­way repeated measures ANOVA was used. Results showed that performance for 0.30; p< 0.0001). In addition, PV (F= 18.77; ω²= 0.24; p< 0.001) and MP (F= 9.57; ω²= 0.13; to be more effective in increasing MPV (p< 0.001; d= ­0.57) and MP (p< 0.001; d= ­0.17) for MV. The main findings suggest that control of the eccentric phase appears to influence ABSTRACT women. To this end, 12 elderly women (age= 65.2 ± 4.2 years; height= 1.6 ± 0.4 meters; body MPV was superior for young adults compared to elderly only at 30% of 1RM (F= 24.2; ω²= p= 0.005) were superior for young adults compared to elderly at 60% of 1RM. HV was shown both young and elderly women (p< 0.001; d= ­0.58), considering 30% of 1RM compared to subsequent concentric phase performance when light loads are applied (30% of 1RM), regardless of age group.