Jump height inter-limb differences during unilateral cmj are not correlated to impulse inter-limb differences during bilateral cmj
Abstract
This study aims to explore the relationship between unilaterally produced countermovement jump height asymmetries (CMJ) and bilateral CMJ force production asymmetries, and to elucidate the rates of agreement between the self-selected leg and the dominant leg. Twenty-three senior basketball players performed eight unilateral CMJs (four with each leg) and four bilateral CMJs in a single session. Momentum during the bilateral CMJ and jump height during the unilateral CMJ were recorded. Small correlations were observed between differences in unilateral CMJ height and asymmetries between limbs in bilateral CMJ impulse (r = - 0.104). The self-selected declared leg revealed higher performance in 7 out of 23 participants (Kappa = -0.20) for unilateral CMJ height, 7 out of 23 participants (Kappa = -0.11) for bilateral CMJ impulse, 6 out of 23 participants (Kappa = -0.36). These results show that the asymmetries detected during bilateral CMJs cannot be extrapolated to unilateral CMJs, and that the preferred leg generally contributes less to force production than the non-preferred leg.
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References
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1. The Publication Service of the University of Murcia (the publisher) has the Publication Rights (Copyright) to the published papers and works, and favors and permits the reusing of the same under the license indicated in point 2.
© Servicio de Publicaciones, Universidad de Murcia, 2013
2. The papers and works are to be published in the digital edition of the Journal under the license Creative Commons Reconocimiento-No Comercial-Sin Obra Derivada 3.0 España (legal text). The copying, using, spreading, transmitting and publicly displaying of the papers, works or publication are permitted as long as: i) the authors and original sources (Journal, publisher and URL of the publication) are quoted; ii) it is not used for commercial benefit; iii) the existence and specifications of this users license are mentioned.
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