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    STUDIA EDUCATIO%20ARTIS%20GYMNASTICAE - Issue no. 2 / 2012  
         
  Article:   EFFECTS OF WHOLE BODY VIBRATION TRAINING ON KNEE EXTENSOR STRENGTH IN RUGBY PLAYERS.

Authors:  DEAK GRAŢIELA-FLAVIA, BOROȘ-BALINT IULIANA, CÂMPEANU MELANIA, CHIHAIA OCTAVIAN.
 
       
         
  Abstract:  Introduction: Whole Body Vibration (WBV) might be considered an alternative to the traditional resistance training methods. The purpose of this study is to investigate the effects of long term WBV training on the maximum isometric knee extensor strength in rugby players. Materials and methods: Twenty volunteers participated in this study. They were recruited from the Romanian National Division rugby team Universitatea Cluj-Napoca. The participants were randomly divided into two groups: a Control group and a Vibration group. The subjects from the Vibration group were trained on the Fitvibe Excel Pro® vibration platform for three weeks (three times per week, 7 minutes per session). Mean torques were recorded over 5 s long time intervals of maximal isometric voluntary contractions of the knee extensor muscles at three different angles, for both legs, before and after WBV training, with the KIN-COM® isokinetic dynamometer. Results: Mean age of the subjects from the Control group was 23.60 ± 4.92 years, mean height was 183.70 ± 1.75 cm, and mean weight was 96.90 ± 4.82 kg. Mean age of the subjects from the Vibration group was 22.60 ± 3.68 years, mean height was 182.30 ± 2.17 cm, and mean weight was 99.00 ± 4.72 kg. No significant changes were found in isometric knee extensor strength between the Vibration and the Control group post-intervention. No significant changes were found between pre- and post-intervention torque values of the same group. Conclusions: Three weeks of vibration exposure might not be enough for chronic neural changes to occur in athletes. More research is needed on the potential effects of long term WBV exposure among highly trained athletes.

Keywords: vibration training, isometric torque, knee extensors, maximal voluntary contraction, rugby players
 
         
     
         
         
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