Effects of fast-velocity eccentric resistance training on early and late rate of force development |
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| Authors: | Anderson Souza Oliveira Rogério Bulhões Corvino Fabrizio Caputo Per Aagaard |
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| Institution: | 1. Human Performance Laboratory, S?o Paulo State University, Rio Claro, Brazil;2. Department of Health Science and Technology, Aalborg University, Aalborg, Denmark;3. Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil;4. SDU Muscle Research Cluster (SMRC), Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark |
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| Abstract: | This study examined whether short-term maximal resistance training employing fast-velocity eccentric knee extensor actions would induce improvements in maximal isometric torque and rate of force development (RFD) at early (<100 ms) and late phases (>100 ms) of rising torque. Twenty healthy men were assigned to two experimental groups: eccentric resistance training (TG) or control (CG). Participants on the TG trained three days a week for a total of eight weeks. Training consisted of maximal unilateral eccentric knee extensors actions performed at 180°s-1. Maximal isometric knee extensor torque (MVC) and incremental RFD in successive 50 ms time-windows from the onset contraction were analysed in absolute terms (RFDINC) or when normalised relative to MVC (RFDREL). After eight weeks, TG demonstrated increases in MVC (28%), RFDINC (0–50 ms: 30%; 50–100 ms: 31%) and RFDREL (0–50 ms: 29%; 50–100 ms: 32%). Moreover, no changes in the late phase of incremental RFD were observed in TG. No changes were found in the CG. In summary, we have demonstrated, in active individuals, that a short period of resistance training performed with eccentric fast-velocity isokinetic muscle contractions is able to enhance RFDINC and RFDREL obtained at the early phase of rising joint torque. |
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| Keywords: | Isometric maximal torque rate of force development explosive strength eccentric training |
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