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Importance of Muscle Power Variables in Repeated and Single Sprint Performance in Soccer Players

100%

López-Segovia M., Dellal A., Chamari K., González-Badillo J. J.

Journal of Human Kinetics

2014

vol. 40

issue 1

201-211

This study examined the relationship between lower body power and repeated as well as single sprint performance in soccer players. The performance of nineteen male soccer players was examined. The first testing session included the countermovement jump (CMJL) and the progressive full squat (FSL), both with external loads. Power in the CMJL and FSL was measured with each load that was lifted. The second session included a protocol of 40-m repeated sprints with a long recovery period (2 min). The number of sprints executed until there was a 3% decrease in performance for the best 40-m sprint time was recorded as a repeated sprint index (RSI). The RSI was moderately associated with power output relative to body mass in the CMJL and FSL (r = 0.53/0.54, p ≤ 0.05). The most and least powerful players (determined by FSL) showed significant differences in the RSI (9.1 ± 4.2 vs. 6.5 ± 1.6) and 10 m sprint time (p [...] 0.01). Repeated and single sprints are associated with relatively lower body power in soccer players.

Transference of Traditional Versus Complex Strength and Power Training to Sprint Performance

64%

Loturco I., Tricoli V., Roschel H., Nakamura F. Y., Abad C. C. C., Kobal R., Gil S., González-Badillo J. J.

Journal of Human Kinetics

2014

vol. 41

issue 1

265-273

The purpose of this study was to determine the effects of two different strength-power training models on sprint performance. Forty-eight soldiers of the Brazilian brigade of special operations with at least one year of army training experience were divided into a control group (CG: n = 15, age: 20.2 ± 0.7 years, body height: 1.74 ± 0.06 m, and body mass: 66.7 ± 9.8 kg), a traditional training group (TT: n = 18, age: 20.1 ± 0.7 years, body height: 1.71 ± 0.05 m, and body mass: 64.2 ± 4.7 kg), and a complex training group (CT: n = 15, age: 20.3 ± 0.8 years, body height: 1.71 ± 0.07 m; and body mass: 64.0 ± 8.8 kg). Maximum strength (25% and 26%), CMJ height (36% and 39%), mean power (30% and 35%) and mean propulsive power (22% and 28%) in the loaded jump squat exercise, and 20-m sprint speed (16% and 14%) increased significantly (p<0.05) following the TT and CT, respectively. However, the transfer effect coefficients (TEC) of strength and power performances to 20-m sprint performance following the TT were greater than the CT throughout the 9-week training period. Our data suggest that TT is more effective than CT to improve sprint performance in moderately trained subjects.

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2 Journal of Human Kinetics

2 2014

2 González-Badillo J. J.

1 Abad C. C. C.

1 Chamari K.

1 Dellal A.

1 Gil S.

1 Kobal R.

1 Loturco I.

1 López-Segovia M.

1 Nakamura F. Y.

1 Roschel H.

1 Tricoli V.

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Importance of Muscle Power Variables in Repeated and Single Sprint Performance in Soccer Players

Transference of Traditional Versus Complex Strength and Power Training to Sprint Performance