Effect of Movement Velocity on the Relationship Between Training Load and the Number of Repetitions of Bench Press

• Autores: Akihiro Sakamoto, Peter J. Sinclair
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 20, Nº. 3, 2006, págs. 523-527
• Idioma: inglés
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• Dialnet Métricas: 4 Citas
• Resumen

  • Sakamoto, A., and P. J. Sinclair, Effect of movement velocity on the relationship between training load and the number of repetitions of bench press. J. Strength Cond. Res. 20(3): 523-527. 2006.-This study investigated the effect of movement velocity on the relationship between loading intensity and the number of repetitions of bench press. Thirteen healthy men (age = 21.7 ± 1.0 years; weight = 76.8 ± 2.5 kg; 1 repetition maximum [1RM] = 99.5 ± 6.0 kg), who were involved in regular weight training, voluntarily participated in the experiment. Subjects performed bench presses on a Smith machine at 5 different intensities (40-80% 1RM), repeated for 4 velocity conditions (slow: 0.15 ± 0.03 m·s?1; medium: 0.32 ± 0.07 m·s?1; fast: 0.52 ± 0.12 m·s?1; ballistic: maximum velocity), which were randomly assigned over 5 experimental sessions after a 1RM test. Velocity significantly changed the relationship between intensity (%1RM) and the number of reps performed (p < 0.001), with faster velocities producing a higher number of reps. A significant interaction between intensity and velocity meant that velocity had a much greater effect on repetitions at lower intensities. These results suggest that the benefits of using a stretch-shortening cycle during faster movements outweigh the associated disadvantages from the force-velocity relationship. The practical applications of this study are that, when trainees are assigned a resistance training with specific RM values, the lifted intensity (%1RM) or weights will not be consistent unless velocity is controlled during training.