Análisis de la contribución segmentaria en los saltos verticales con contramovimiento y su efecto debido a la restricción propuesta en el Test de Bosco CMJ

  1. Gutiérrez Dávila, Marcos
  2. Garrido, J.M.
  3. Gutiérrez Cruz, Carmen
  4. Giles, J.
Journal:
European Journal of Human Movement

ISSN: 0214-0071 2386-4095

Year of publication: 2011

Issue: 27

Pages: 59-74

Type: Article

More publications in: European Journal of Human Movement

Abstract

Despite the general agreement on the empirical benefits of segmental participation in vertical jumping performance, there are some controversies about its theoretical explanation. The purpose of this study was to provide a causal explanation of the benefits of segmental contribution in vertical jumping. Fourteen experienced athletes have participated in vertical jumping. They performed five maximum countermovement jumps, analyzing the vertical jumping whose flight time was the median value. The records of the rectangular components of the velocity and position of the CM were determined by integration, using the respective components of the reaction force from a force platform. The constants of integration were recorded from a manual digitization of 2D images from a time-synchronized video camera to the platform. Throughout the movement, seven markers were digitized to the body that allowed us to record the angular segmental contribution. The results confirm the theory which explains the transmission of forces and some theories about the reuse of energy in the extensor muscle activity of the lower limbs. The segmental restriction proposed in the CMJ Bosco protocol modifies the sequence of segmental participation, reduces the vertical forces of reaction and modifies the mechanical properties of the muscle.

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