Discrepancies between concentric and eccentric muscle actions strength

  • Bernardo Neme Ide Laboratório de Bioquí­mica do Exercí­cio - LABEX, Instituto de Biologia - Universidade Estadual de Campinas - UNICAMP
  • Charles Ricardo Lopes Laboratório de Bioquí­mica do Exercí­cio - LABEX, Instituto de Biologia - Universidade Estadual de Campinas - UNICAMP
  • Clodoaldo José Dechechi Laboratório de Bioquí­mica do Exercí­cio - LABEX, Instituto de Biologia - Universidade Estadual de Campinas - UNICAMP. Faculdades Estácio de Sá - FAESO - Ourinhos, São Paulo
  • René Brenzikofer Laboratório de Instrumentação para Biomecânica (LIB), Faculdade de Educação Fí­sica, Unicamp, Campinas, Brasil
  • Denise Vaz de Macedo Laboratório de Bioquí­mica do Exercí­cio - LABEX, Instituto de Biologia - Universidade Estadual de Campinas - UNICAMP. Faculdades Estácio de Sá - FAESO - Ourinhos, São Paulo
Keywords: Muscle strength, Eccentric action, Training intensity

Abstract

The aim of this study was to observe the discrepancies between concentric and eccentric muscle actions strength in the tests of one repetition maximum concentric (1RMcon) and one repetition maximum eccentric (1RMexc) for the bench press (BP), Leg Press 45 ° (LP), and Seated Cable Rows (RC). Participated in the study 16 healthy young adults (9 men - age = 23.4 ± 3 years, mass = 74.2 ± 9.9 kg, height = 1.76 ± 0.06m.7 women - age = 25.4 ± 1.5 years, mass = 60.5 ± 9.1KG, height = 1.67 ± 0.06m). 1RMcon and 1RMexc loads were verified in 2 distinct sessions, and separated by one week each. Statistical analysis was performed using a two-way ANOVA with post test Tukey and Kramer multiple comparison test was adopted as a benchmark significant p <0.05. We observed that the 1RMexc loads were significantly higher (p <0.01) than those of 1RMcon in the 3 exercises analyzed. For the LP the difference was 53%, for the BP 70%, and the RC 62% higher. The observed data supported our hypothesis and further emphasize the importance of distinguishing the intensity used for the eccentric muscle actions in strength training.

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Published
2011-12-31
How to Cite
Ide, B. N., Lopes, C. R., Dechechi, C. J., Brenzikofer, R., & Macedo, D. V. de. (2011). Discrepancies between concentric and eccentric muscle actions strength. Brazilian Journal of Exercise Prescription and Physiology, 4(20). Retrieved from https://www.rbpfex.com.br/index.php/rbpfex/article/view/232
Issue
Vol. 4 No. 20 (2010)
Section
Scientific Articles - Original

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