Subjects will be recruited, criteria exclusion will be evaluated, age, and BMI will be recorded. Each subject will exercise on the vibratory platform in 3 different positions, each one with 2 different frequencies and 1 minute each position and frequency. Pelvic electromyography (EMG) will assess the activity of the urinary sphincter and pelvic floor muscle with vibratory exercise. Data will be collected during all procedures.