Abstract
The purpose of this study was to analyze the effects of whole body vibration training (WBVT) on lower extremity strength and balance in older adults. WBVT involves performance of an exercise on a vibrating platform. The current literature shows that WBVT can increase strength more than exercising on a static surface; however few studies have investigated WBVT and balance together. A total of 22 participants (mean age of 71) were randomly assigned to a WBVT group or a control group. Both groups performed the same exercise: a double leg squat to 30 degrees of knee flexion, 2 sets of 10 repetitions holding each squat for 10 seconds, 2 days per week on non-consecutive days for 8 weeks. The vibrating group performed the exercise a vibrating platform and the control group performed the exercise on a static surface. A baseline and final measurement of strength was assessed by the 10 RM on the leg press and balance was tested using the STAR Excursion Balance test (SEBT). The results did not show a statistically significant difference between the two interventions (F=0.905, df=9.0,p>0.05). There was a mean increase in strength for both the vibrating group and the control group, and the control group showed an increase in all eight directions of the SEBT. WBVT does not appear to be an efficient way to improve strength and balance when compared to a static surface in community dwelling older adults.