A Comparison of Two Landing Styles in a Two-foot Vertical Jump

Gutiérrez-Davila, Marcos and Campos, Jose and Navarro Cabello, Enrique (2009). A Comparison of Two Landing Styles in a Two-foot Vertical Jump. "Journal of Strength & Conditioning Research", v. 23 (n. 1); pp. 325-331. ISSN 1064-8011. https://doi.org/10.1519/JSC.0b013e3181874806.

Description

Title: A Comparison of Two Landing Styles in a Two-foot Vertical Jump
Author/s:
  • Gutiérrez-Davila, Marcos
  • Campos, Jose
  • Navarro Cabello, Enrique
Item Type: Article
Título de Revista/Publicación: Journal of Strength & Conditioning Research
Date: January 2009
Volume: 23
Subjects:
Freetext Keywords: Impulse, Force platforms, video analysis.
Faculty: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Department: Salud y Rendimiento Humano
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In team sports, such as basketball and volleyball, the players use different takeoff styles to make the vertical jump. The two-foot vertical jump styles have been classified according to the landing style and identified as hop style, when both feet touch the ground at the same time, and step-close style, when there is a slight delay between the first and second foot making contact with the ground. The aim of this research is to identify the differences between the two styles. Twenty-three subjects participated in the study, of whom 14 were volleyball players and 9 were basketball players. The jumps were video recorded and synchronized with two force platforms at 250 Hz. Two temporal periods of the takeoff were defined according to the reduction or increase in the radial distance between the center of gravity (CG) and the foot support (T - RDCG and T + RDCG, respectively). The findings produced no specific advantages when both styles were compared with respect to takeoff velocity and, consequently, to jump height, but takeoff time was significantly shorter (p < 0.001) in the hop style takeoff. However, this reduction was compensated for by the greater time employed in the last step of the approach run (p < 0.001). When the step-close style was used, the vertical velocity of CG at the beginning of the takeoff is significantly lower. Moreover, the mean vertical force developed during T - RDCG was reduced by -627.7 ± 251.1 N, thus lessening impact on landing. Horizontal velocity at the end of the takeoff is less when the step-close style is used (p < 0.005), suggesting that this style is better for jumps where it is necessary to move horizontally during the flight against an opponent.

More information

Item ID: 5258
DC Identifier: http://oa.upm.es/5258/
OAI Identifier: oai:oa.upm.es:5258
DOI: 10.1519/JSC.0b013e3181874806
Official URL: http://journals.lww.com/nsca-jscr/Abstract/2009/01000/A_Comparison_of_Two_Landing_Styles_in_a_Two_Foot.47.aspx
Deposited by: Memoria Investigacion
Deposited on: 01 Dec 2010 11:04
Last Modified: 20 Apr 2016 14:07
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