The effects of vibration on explosive and reactive strength when applying individualized vibration frequencies

Riccardo Di Giminiani, Jozsef Tihanyi, Sandor Safar, Renato Scrimaglio

Research output: Contribution to journalArticle

48 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)169-177
Number of pages9
JournalJournal of Sports Sciences
Volume27
Issue number2
DOIs
Publication statusPublished - Jan 15 2009

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Keywords

  • Explosive-reactive strength
  • Individual vibration frequency
  • Mechanical power
  • Vertical jumps

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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