EFFECTS OF STATIC STRETCHING ON MAXIMAL ISOKINETIC TORQUE

  • Randall L. Jensen
  • Brian J. Begg
  • Patrick G. Butler
  • Brendan M. Egan
  • Lisa E. Fitzgerald
  • Sarah C. Keane
Keywords: warm-up, quadriceps, concentric, eccentric

Abstract

The effects of 20 seconds of agonist (AGO), antagonist (ANT) or no (NO) pre-exercise stretch on concentric (CON) and eccentric (ECC) maximal isokinetic torque produced at the knee were examined. Twelve male semi-pro rugby players performed dominant isokinetic knee extension following the specified stretch protocol. One-way Repeated Measures ANOVA revealed AGO to be significantly less (p < 0.05) than the other protocols for both CON (270 28 Nm) and ECC (309 42 Nm) torque. There was no difference between the ANT or NO for either CON (303 35 Nm and 304 38 Nm, respectively) or ECC (341 40 Nm and 33644 Nm). The results support the theory that pre-exercise agonist stretching may lead to performance decrements in maximal concentric torque production.
Published
2008-03-25