title: Adding whole body vibration to preconditioning exercise increases subsequent on-ice sprint performance in ice-hockey players.
abstract: The phenomenon postactivation potentiation can possibly be used to acutely improve sprint performance. The purpose of this study was to investigate the effect of body-loaded half-squats with added whole body vibration (WBV) on subsequent 20 m on-ice sprint performance. Fifteen male ice-hockey players performed 4 test sessions on separate days and in a randomized order. Two of this test sessions were with WBV and 2 were with noWBV and the best sprint time was used to determine effectiveness. Each test session included preconditioning 30 seconds half-squat exercise, 2 of which were supplemented with 50 Hz WBV at a amplitude of 3 mm. One minute after the cessation of the preconditioning exercise, the 20 m sprint test was performed. Intermediate time was sampled after 10 m. Preconditioning exercise performed with 50 Hz WBV resulted in superior 10 m and 20 m sprint performance compared to preconditioning exercise performed without WBV (1.84 6 0.10 seconds vs. 1.89 6 0.10 seconds and 3.14 6 0.13 vs. 3.17 6 0.13 seconds, respectively, p # 0.01). There was no difference between the protocols in perceived well-being of the legs before the warm-up or after the warm up (p = 0.3). However, there was an improved well-being in the legs immediately after the preconditioning exercise with WBV (p , 0.05). In conclusion, preconditioning exercise performed with WBV at 50 Hz seems to enhance on-ice sprint performance in ice-hockey players. This suggests that coaches can incorporate such exercise into the preparation to specific sprint training to improve the quality of the training.
authors.forename: Bent R
authors.initials: BR
authors.lastname: Rønnestad
authors.forename: Gunnar
authors.initials: G
authors.lastname: Slettaløkken
authors.forename: Stian
authors.initials: S
authors.lastname: Ellefsen
mesh_terms: D054874:Athletic Performance / Q000502:physiology*; D005080:Exercise Test; D006688:Hockey / Q000502:physiology*; D006801:Humans; D008297:Male; D064797:Physical Conditioning, Human / Q000379:methods* / Q000502:physiology*; D011897:Random Allocation; D014732:Vibration; D063996:Warm-Up Exercise; D055815:Young Adult