title: Acute unilateral leg vibration exercise improves contralateral neuromuscular performance.
abstract: OBJECTIVE
  To examine the post-exercise cross-transfer effects of acute whole body vibration (WBV).
  
  
  METHODS
  Seventeen healthy male volunteers (20.8 ± 1.2 y) performed three unilateral vibration conditions in a randomized order: 1) WBV-50 Hz [high amplitude]; 2) WBV-30 Hz [low amplitude]; and 3) a control no WBV condition (Sham) applied to the dominant leg. Each condition involved maximal voluntary isometric contractions (MVC) followed by three leg press explosive repetitions (40% MVC) with non-dominant and dominant legs; which were conducted prior to and post vibration (immediately; 2 min and 5 min). Surface electromygraphy (sEMG) of the vastus lateralis (VL) and medial gastrocnemius (MG) were measured throughout each condition.
  
  
  RESULTS
  A condition x leg x time interaction effect was detected (p=0.001) where 50 Hz-High in the stimulated leg enhanced mean velocity at post-2 min compared to 30 Hz-Low and Sham, remaining elevated at post-5 min. Similarly, 50 Hz-High in the non-stimulated leg increased mean velocity at post-immediately and post-2 min compared to 30 Hz-Low and Sham. There were no changes in sEMG of VL and GM in the stimulated and non-stimulated post-conditions.
  
  
  CONCLUSIONS
  WBV (50 Hz) can augment cross-transfer in neuromuscular performance. WBV could provide an alternate method of unilateral training to promote cross education explosive strength.
authors.affiliation: Laboratory of Physiology, European University Miguel de Cervantes, Valladolid, Spain.
authors.forename: P J
authors.initials: PJ
authors.lastname: Marín
authors.forename: T J
authors.initials: TJ
authors.lastname: Hazell
authors.forename: M T
authors.initials: MT
authors.lastname: García-Gutiérrez
authors.forename: D J
authors.initials: DJ
authors.lastname: Cochrane
mesh_terms: D004576:Electromyography; D015444:Exercise / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D007866:Leg; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D014732:Vibration; D055815:Young Adult