title: Effects of interset whole-body vibration on bench press resistance training in trained and untrained individuals.
abstract: BACKGROUND
  Previous studies have demonstrated positive effects of acute vibration exercise on concentric strength and power, but few have observed the effects of vibration exposure on resistance training. The aim of this study was to verify the effects of whole body vibration applied to the chest via hands on bench press resistance training in trained and untrained individuals.
  
  
  METHODS
  Nineteen participants (10 recreationally trained bodybuilders and 9 untrained students) performed two randomized sessions of resistance training on separate days. Each strength session consisted of 3 bench press sets with a load of 75% 1RM to failure in each set, with 2 minutes' rest between sets. All subjects performed the same strength training with either, vibration exposure (12 Hz, 4 mm) of 30 seconds immediately before each bench press set or without vibration. Number of total repetitions, kinematic parameters, blood lactate and perceived exertion were analyzed.
  
  
  RESULTS
  In the untrained group, vibration exposure caused a significant increase in the mean velocity (from 0.36±0.02 to 0.39±0.03 m/s) and acceleration (from 0.75±0.10 to 0.86±0.09 m/s2), as well as a decrease in perceived effort (from 8±0.57 to 7.35±0.47) in the first bench press set, but no change was observed in the third bench press set. In the recreationally trained bodybuilders, vibration exposure did not cause any improvement on the performance of bench press resistance training.
  
  
  CONCLUSIONS
  These results suggest that vibration exposure applied just before the bench press exercise could be a good practice to be implemented by untrained individuals in resistance training.
authors.affiliation: Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Caceres, Spain - rtimon@unex.es.
authors.forename: Rafael
authors.initials: R
authors.lastname: Timon
authors.forename: Daniel
authors.initials: D
authors.lastname: Collado-Mateo
authors.forename: Guillermo
authors.initials: G
authors.lastname: Olcina
authors.forename: Narcis
authors.initials: N
authors.lastname: Gusi
mesh_terms: D056352:Athletes; D054874:Athletic Performance / Q000502:physiology*; D006801:Humans; D008297:Male; D011897:Random Allocation; D055070:Resistance Training / Q000379:methods*; D014732:Vibration; D055815:Young Adult