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dc.contributor.authorMartínez Valencia, M. A.
dc.contributor.authorGonzález Ravé, José María
dc.contributor.authorSantos García, D. J.
dc.contributor.authorAlcaraz Ramón, Pedro Emilio
dc.contributor.authorNavarro Valdivielso, Fernando
dc.date.accessioned2018-05-15T10:58:33Z
dc.date.available2018-05-15T10:58:33Z
dc.date.issued2011-12-12
dc.identifier.citationMartínez-Valencia, M. A., González-Ravé, J. M., Santos-García, D. J., Alcaraz Ramon, P. E., & Navarro-Valdivielso, F. (2014). Interrelationships between different loads in resisted sprints, half-squat 1 RM and kinematic variables in trained athletes. European journal of sport science, 14(sup1), S18-S24.es
dc.identifier.other10.1080/17461391.2011.638935
dc.identifier.urihttp://hdl.handle.net/10952/3177
dc.description.abstractResisted sprint running is a common training method for improving sprint-specific strength. It is well-known that an athlete's time to complete a sled-towing sprint increases linearly with increasing sled load. However, to our knowledge, the relationship between the maximum load in sled-towing sprint and the sprint time is unknown, The main purpose of this research was to analyze the relationship between the maximum load in sled-towing sprint, half-squat maximal dynamic strength and the velocity in the acceleration phase in 20-m sprint. A second aim was to compare sprint performance when athletes ran under different conditions: un-resisted and towing sleds. Twenty-one participants (17.86±2.27 years; 1.77±0.06 m and 69.24±7.20 kg) completed a one repetition maximum test (1 RM) from a half-squat position (159.68±22.61 kg) and a series of sled-towing sprints with loads of 0, 5, 10, 15, 20, 25, 30% body mass (Bm) and the maximum resisted sprint load. No significant correlation (P<0.05) was found between half-squat 1 RM and the sprint time in different loaded conditions. Conversely, significant correlations (P<0.05) were found between maximum load in resisted sprint and sprint time (20-m sprint time, r=−0.71; 5% Bm, r=−0.73; 10% Bm, r=−0.53; 15% Bm, r=−0.55; 20% Bm, r=−0.65; 25% Bm, r=−0.44; 30% Bm, r=−0.63; MaxLoad, r= 0.93). The sprinting velocity significantly decreased by 4–22% with all load increases. Stride length (SL) also decreased (17%) significantly across all resisted conditions. In addition, there were significant differences in stride frequency (SF) with loads over 15% Bm. It could be concluded thatthe knowledge of the individual maximal load in resisted sprint and the effects on the sprinting kinematic with different loads, could be interesting to determinate the optimal load to improve the acceleration phase at sprint running.es
dc.language.isoenes
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectSled towinges
dc.subjectSprinting kinematicses
dc.subjectVelocityes
dc.titleInterrelationship between different loads in resisted sprints, half-squat 1RM, and kinematic variables in trained athleteses
dc.typearticlees
dc.rights.accessRightsopenAccesses
dc.journal.titleEuropean Journal of Sport Sciencees
dc.volume.number14es
dc.description.disciplineActividad Física y Deportees


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