Whole-body vibration may be as effective as exercise, says study

Whole-body vibration (WBV) consists of a person sitting, standing or lying on a machine with a vibrating platform. When the machine vibrates, it transmits energy to the body, and muscles contract and relax multiple times during each second. 

Many people find it challenging to exercise regularly and that is contributing to the obesity and diabetes epidemics. The researchers from Augusta University in the US examined two groups of five-week-old male mice. 

One group consisted of normal mice, while the other group was genetically unresponsive to the hormone leptin, which promotes feelings of fullness after eating. Mice from each group were assigned to sedentary, WBV or treadmill exercise conditions. 

After a week-long period to grow used to the exercise equipment, the groups of mice began a 12-week exercise programme. The mice in the WBV group underwent 20 minutes of WBV at a frequency of 32 Hz with 0.5g acceleration each day. Mice in the treadmill group walked for 45 minutes daily at a slight incline. For comparison, the third group did not exercise. Mice were weighed weekly during the study. 

The genetically obese and diabetic mice showed similar metabolic benefits from both WBV and exercising on the treadmill. Obese mice gained less weight after exercise or WBV than obese mice in the sedentary group, although they remained heavier than normal mice.

 Exercise and WBV also enhanced muscle mass and insulin sensitivity in the genetically obese mice. Although there were no significant effects in the young and healthy mice, the low-intensity exercise and WBV protocols were designed for successful completion by obese mice. These findings suggest that WBV may be a useful supplemental therapy to combat metabolic dysfunction in individuals with morbid obesity.