Relationships between Isokinetic Knee Strength, Single-Sprint Performance and Repeated-Sprint Ability in Football Players
- Autores: Mark A. Newman, Kyle M. Tarpenning, Frank E. Marino
- Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 18, Nº. 4, 2004, págs. 867-872
- Idioma: inglés
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- Dialnet Métricas: 6 Citas
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Resumen
Previous research has demonstrated that muscular strength of the knee extensors is related to the speed an athlete can produce during a singlesprint performance. Football players, as well as many other athletes on the field and the court, execute multiple sprints during the course of a match. The purpose of this study was to examine the relationships between leg strength, single-sprint speed, and repeated-sprint ability. Thirty-eight football players from 3 codes (soccer, rugby league, rugby union) completed a 12- 3 20- m repeated-sprint protocol and were evaluated for peak isokinetic knee extension and flexion torque at 608·s-1, 1508·s-1, and 2408·s-1. Although single-sprint performance correlated with peak extensor and flexor torque at all velocities, the strongest correlation was observed between relative knee extensor torque at 2408·s-1 and the initial acceleration phase (0�10 m) of the single-sprint performance (r = 20.714, p < 0.01). However, the data suggest that factors other than strength contribute to repeated- sprint ability. This finding provides new evidence in elucidating the relationship between strength and repeated-sprint performance.
