Analysis of the repeated sprints ability with and without change of direction in professional soccer players
Abstract
The aims of this study were to analyze the performance in repeated straight line sprint (RSA) and repeated sprints with change of direction (RCODA) in soccer players. The study involved 18 professional soccer players. Results showed that considerably greater time was needed to perform subsequent 15 and 30 m RCODA (p < 0.01, d =1.29-4.11) in comparison to same distancesRSA.However, differences in relation to fatigue indexes at both 15m (IF15 m) and 30 m (IF30 m) were not statistically different when performing RSA and RCODA (p > 0.05, d = 0.18-0.43). Despite the fact that the association between RSA and RCODA was either high or very high and very likely at the majority of the sprints, at the best track record and total time, the obtained association for IF15 m and IF30 m was small or moderate and not significant.
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The works and papers that are published in this Journal are subject to the following terms:
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.
3. Conditions of Self-Archiving. It is permitted and encouraged that the authors spread electronically the pre-print (before printing) and/or post-print (the revised, evaluated and accepted) versions of their papers or works before their publication since this favors their circulation and early diffusion and therefore can help increase their citation and quotation, and also there reach through the academic community.
