Effect of Whole Body Vibration on Vertical Jump Height and Quadriceps Muscle Performance
The main objective of the study was to investigate the effect of whole body vibration (WBV) on vertical jump height and quadriceps muscle strength and performance. Thirty six young adults, 18 males and 18 females between 18 and 25 years were randomly recruited from the Faculty of Health sciences – Beirut Arab University. The subjects were divided into two groups with equal number of male and females; the control group and the training group. Individuals of the control group were not subjected to any type of training whereas the training group was subjected to WBV training after a warm up using stationary bicycle; where WBV was applied for 5 minutes consisting of (60s vibration, 60s rest, 60s vibration, 60s rest, 60s vibration) at 8mm amplitude and 30 Hz frequency. The subjects of both the control and the training group had undergone measurements of the vertical jump height and the quadriceps muscle strength using electronic dynamometry at three instances; before starting the training, after 3 weeks, and after 6 weeks of training. The results indicate that jump height of the training group compared to control group didn't improve P= 0.285 > 0.05 (no significance) whereas the jump height of the trainers post training for 6 weeks showed an improvement p=0.00 < 0.05. Considering quadriceps muscle strength of trainers no improvement in either comparing it with control or pre and post training where the p value is 0.501 and 0.239 respectively (both >0.05). Conclusion: Whole body vibration training for 6 weeks improves vertical jump height in young adults between 18 and 25 years and doesn't improve quadriceps strength with this training program.
Alaa Baalbaki- Layal Kammouni- Rima Janom- Bilal El Baba- Nahida Rahal
Dr. Ayman El Khatib