In this study we hypothesized that whole body vibration (WBV) improves repeated sprint ability (RSA) performance and reduces fatigue. To test our hypothesis we studied the acute effect of WBV, which could represent a new field training method (ecological validity), on time performance variables and blood lactate concentration during RSA test. Therefore, the aim of this study was to investigate the acute effects of WBV on RSA (Bishop et al., 2001). Seventeen male soccer players (16.71 ± 0.47 y) performed three RSA tests on three different weeks (Randomized crossover study). Each RSA test (Figure 1) was performed with 6 maximal 40m shuttle-sprints (20+20m) and with a change of direction of 180°, separated by 20-s of passive recovery. The second RSA (RSA2) test was done with WBV “Power Plate pro5” applied during the recovery periods (Figure 2) to evaluate the effect of WBV (45 Hz - 2.2 mm). RSA1 and 3 were performed without WBV. The studied variables were: best time (BT), worst time (WT), total time (TT), blood lactate (BLa) and the fatigue index (FI). ANOVA with repeated measures showed no differences between RSA1 and RSA3, while there were significant differences in all variables studied. TT= [RSA2 0.93% and 1.68% lower than RSA1 and RSA3 respectively; p<0.05], BLa= [RSA2 16.97% and 14.73% greater than RSA1 and RSA3 respectively; p<0.001], WT= [RSA2 1.90% and 2.93% lower than RSA1 and RSA3 respectively; p<0.01], and FI= [RSA2 30.64% and 40.15% lower than RSA1 and RSA3 respectively; p<0.0001]. When comparing individual sprints (Figure 3), WBV showed a significant effect at the 5st sprint: RSA2 2.29% and 2.95% lower than RSA1 and RSA3 respectively (p<0.005), while at the 6st sprint: RSA2 2.75% and 4.09% lower than RSA1 and RSA3 respectively; p<0.005. In conclusion, by using WBV during the recovery periods of a RSA test, we demonstrated that most of the time performance variables were improved. Further studies are needed to explain the physiological mechanisms behind these improvements and also to see whether chronic use of WBV during training might improve on-field RSA performance.

THE ACUTE EFFECT OF WHOLE BODY VIBRATION ON REPEATED SHUTTLE-RUNNING IN YOUNG SOCCER PLAYERS

DI GIMINIANI, RICCARDO;
2013-01-01

Abstract

In this study we hypothesized that whole body vibration (WBV) improves repeated sprint ability (RSA) performance and reduces fatigue. To test our hypothesis we studied the acute effect of WBV, which could represent a new field training method (ecological validity), on time performance variables and blood lactate concentration during RSA test. Therefore, the aim of this study was to investigate the acute effects of WBV on RSA (Bishop et al., 2001). Seventeen male soccer players (16.71 ± 0.47 y) performed three RSA tests on three different weeks (Randomized crossover study). Each RSA test (Figure 1) was performed with 6 maximal 40m shuttle-sprints (20+20m) and with a change of direction of 180°, separated by 20-s of passive recovery. The second RSA (RSA2) test was done with WBV “Power Plate pro5” applied during the recovery periods (Figure 2) to evaluate the effect of WBV (45 Hz - 2.2 mm). RSA1 and 3 were performed without WBV. The studied variables were: best time (BT), worst time (WT), total time (TT), blood lactate (BLa) and the fatigue index (FI). ANOVA with repeated measures showed no differences between RSA1 and RSA3, while there were significant differences in all variables studied. TT= [RSA2 0.93% and 1.68% lower than RSA1 and RSA3 respectively; p<0.05], BLa= [RSA2 16.97% and 14.73% greater than RSA1 and RSA3 respectively; p<0.001], WT= [RSA2 1.90% and 2.93% lower than RSA1 and RSA3 respectively; p<0.01], and FI= [RSA2 30.64% and 40.15% lower than RSA1 and RSA3 respectively; p<0.0001]. When comparing individual sprints (Figure 3), WBV showed a significant effect at the 5st sprint: RSA2 2.29% and 2.95% lower than RSA1 and RSA3 respectively (p<0.005), while at the 6st sprint: RSA2 2.75% and 4.09% lower than RSA1 and RSA3 respectively; p<0.005. In conclusion, by using WBV during the recovery periods of a RSA test, we demonstrated that most of the time performance variables were improved. Further studies are needed to explain the physiological mechanisms behind these improvements and also to see whether chronic use of WBV during training might improve on-field RSA performance.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/37906
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 28
social impact