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The focus of this research was to evaluate the effect whole body vibration (WBV) on measures of muscular contractile function. In addition, this research was conducted to compare the effects of WBV on athletes versus non-athletes. Nineteen male, non-athlete college students, as well as eighteen male Division I collegiate athletes participated in this research. All participants completed 2 conditions, vibration and no vibration, in a randomized order. Participants were exposed to either a 2-minute bout of vibration or a 2-minute no vibration condition. Immediately following both conditions, participants were tested for peak vertical jump height, isokinetic peak torque and average power of knee extensors and flexors, and anaerobic power during a 30-second maximal effort cycle task. Results showed a significant improvement in knee flexion peak torque at 6.28 rad·sec -1 in the athlete group following the vibration condition. Results also showed a trend toward a significant improvement in knee extensor and knee flexor average power at 6.28 rad×sec-1 in the athlete group following the vibration condition. There were no significant changes in any isokinetic measure for the non-athlete group. There were no significant changes in vertical jump or anaerobic power for either group. This may be due in part to the complexity of the dose-response relationship, which is largely dictated by the parameters of vibration frequency, amplitude, and duration. However, previous studies have found positive results using similar protocols as the present study. Practically speaking, the use of WBV prior to exercise may result in facilitated contractile and athletic performance. Consequently, this study sought to describe the impact of using WBV prior to exercise on muscle function.

retos digital/retos

Acute effects of whole body vibration on functional capabilities of skeletal muscle (Los efectos agudos de la vibración corporal total sobre las capacidades funcionales del músculo esquelético)