Abstract:
Nowadays there is a variety of exercise machines which assist in improving health. Whole
Body Vibration(WBV)is interesting, which has been recently proposed as an exercise intervention
using in professional sport and leading fitness for beneficial effect on muscle and bone strength.
Some research claim that the effect of WBV can reduce weight and fat, induce adaptive hormone,
such as testosterone and growth hormone, by increasing cellular metabolism, vascular perfusion and
stimulate neurohormonal system. However, the long term effects of reducing weight, fat and
especially increasing hormone response, are still not clear. The aim of this study is to determine the
effect of WBV on reducing weight, fat and increasing serum IGF-1 in overweight women (BMI>25).
This experimental research was divided into two groups , one controlled (control group)and one
implemented ( WBV group who used WBV machine). There were 10 participates in each group. The
mean age was 37.94 years old (min. 22 yr.,max 59 yr.), the mean weight was 76.6 kg. (min 58.7, max
133.7 kg.) and the mean BMI was 30.65 kg/m2 (min 25.1, max 44.6 kg/m2). . Both groups followed
the experimental exercise protocol for 6 weeks. The results showed that the group that used WBV
machine had weight and fat loss -3.24 kg. and -1.57 kg. and the mean BMI decreased -0.46 kg/m2.
Also when compared to the controlled group, there was a significant decrease in BMI and fat mass
(p-value= 0.0338, 0.0463). Moreover the serum IGF-1 increased in all subjects in the WBV group
while only 2 subjects in the control group increased. When the two groups were compared, it found
that WBV helped to significantly increase IGF-1 (p-value 0.0009).