Effects of different isokinetic knee extension warm-up protocols on muscle performance (original) (raw)

Aim: The optimal warm-up protocol for isokinetic strength performance assessment remains unclear. Therefore, the purpose of this study was to analyze the effects of different warm-up routines on strength production in young adults. Methods: Fifteen healthy young men (24.8±3.5 years) were exposed to five different isokinetic warm-up protocols. Isokinetic strength was assessed after each protocol at 60°.s-1. The warm-up protocols were: (1) submaximal, 10 submaximal consecutive repetitions (50% of maximum effort) at 60°.s-1; (2) intermittent, one set of 10 maximal intermittent contractions (30 s between contractions) at 60°.s-1; (3) 180, 10 maximal consecutive repetitions at 180°.s-1; (4) 300, 10 maximal consecutive repetitions at 300°.s-1 and (5) control session (no warm-up). Results: Peak torque was greater (P<0.05) after the intermittent (295.3±53.2 N.m) when compared to 300 (267.5±47.3 N.m) and 180 (275.2±48.6 N.m) warm-up protocols. Also, peak torque was higher (P<0.05) in t...