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.
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