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Revista Brasileira de Medicina do Esporte

Print version ISSN 1517-8692

Abstract

PEREIRA, Marta Inez Rodrigues  and  GOMES, Paulo Sergio Chagas. Effects of isotonic resistance training at two movement velocities on strength gains. Rev Bras Med Esporte [online]. 2007, vol.13, n.2, pp. 91-96. ISSN 1517-8692.  http://dx.doi.org/10.1590/S1517-86922007000200005.

Considering the need to adequately prescribe training, the aim of this study was to compare the effect of isotonic resistance training at 0.44 and 1.75 rad·s-1 on gains in muscular strength. Fourteen healthy volunteers were stratified into slow (SG: 0.44 rad·s-1; n = 8; 26 ± 7 yr; 66 ± 12 kg) and fast (FG: 1.75 rad·s-1; n = 6; 28 ± 7 yr; 55 ± 9 kg) groups exercising squat and bench press (1 set, 8-10 RM, 3 x/wk, 12 weeks). Six of these subjects took part in a comparison group (CG: 25 ± 6 yr; 59 ± 13 kg), and did not train during a control period of 12 weeks preceding training. Paired t-test showed no differences in the measured variables for CG. Repeated measures 2 x 2 ANOVA showed significant (P < .05) gains for both training groups and exercises in 1 RM (SG: 27.6 ± 16.8% and 16.8 ± 11.8%; FG: 21.4 ± 12.6% and 16.2 ± 14.1%, squat and bench press, respectively) and 8-10 RM tested at 0.44 rad·s-1 (SG: 36.0 ± 22.4% and 14.7 ± 9.2%; FG: 31.1 ± 19.2% and 18.8 ± 8.7%) and 1.75 rad·s-1 (SG: 27.2 ± 11.1% and 15.2 ± 11.4%; FG: 23.6 ± 19.2% and 20.9 ± 9.8%), with no significant differences between groups. Results of this study did not support velocity specificity in training with isotonic equipment.

Keywords : Repetitions maximum; Strength training; Squat; Bench press; Specificity.

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