The effects of vibration on explosive and reactive strength when applying individualized vibration frequencies
Deutscher übersetzter Titel: | Der Einfluss von Vibration auf die Explosiv- und Reaktivkraft bei der Anpassung an individuelle Vibrationsfrequenzen |
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Autor: | Di Giminiani, Riccardo; Tihanyi, Jozsef; Safar, Sandor; Scrimaglio, Renato |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 27 (2009), 2, S. 169-177, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640410802495344 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201408007661 |
Quelle: | BISp |
Abstract
The aim of this study was to assess the effects of 8 weeks of whole-body vibrations on explosive and reactive leg strength. Thirty-three physically active students took part in the study and were randomly assigned to an individualized-vibration group, a fixed-vibration group or a control group. The frequency of vibration was set to 30 Hz for the fixed-vibration group, whereas the frequency for the individualized-vibration group was determined by monitoring the participants' EMGrms activity. The participants in the two vibration groups were exposed three times a week for 8 weeks to a series of 10 × 1-min whole-body vibrations with a 1-min pause between series of vibrations and a 4-min pause after the first five series of vibrations. Jump height in the squat jump increased significantly in all three groups (by 11% for the individualized-vibration group, p = 0.001; by 3% for the fixed-vibration group, p = 0.011; and by 2% for the control group, p = 0.006), but countermovement jump height was not affected. In continuous rebound jumps by the individualized-vibration group, jumping height increased by 22% (p = 0.006) and power increased by 18% (p = 0.002). The results of this study suggest that the use of an individualized vibration frequency produces a greater response from the neuromuscular system and is more beneficial than vibrations at a fixed pre-selected frequency. Verf.-Referat