The Effect of Two Warm-Up Protocols on Some Biomechanical Parameters of the Neuromuscular System of MiddleDistance Runners

• Autores: Branko Skof, Vojko Strojnik
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 21, Nº. 2, 2007, págs. 394-399
• Idioma: inglés
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• Resumen

  • ¿kof, B., and V. Strojnik. The effect of two warm-up protocols on some biomechanical parameters of the neuromuscular system of middle distance runners. J. Strength Cond. Res. 21(2):394-399. 2007.-The objective of this study was to determine the effect of 2 different warm-up protocols on the neuromuscular system of well-trained middle distance runners. Seven runners performed 2 different warm-up protocols, one of which included slow running, stretching, and bounding and sprinting exercises, while the other consisted of slow running and stretching only. Before and after warm-up, contractile properties of the vastus lateralis and quadriceps femoris were monitored with a single twitch test, maximal torque, and the level of muscle activation during maximal voluntary extension. The 2 types of warm-up protocols showed statistically significant differences in the increase of peak knee extension torque and muscle activation level. After warm-up 1 maximal twitch torque was increased and twitch contraction time (CT) was shortened. Both maximal torque and the level of activation were increased. Parameter changes after warm-up 2 were similar to those after warm-up 1 but not statistically significant. Sprinting and bounding as part of athletes' warm-up improve muscle activation.