Focal Muscle Vibration in Parkinson's Disease

"The patients involved in the study will undergo muscle vibratory stimulation in association with conventional rehabilitation treatment three times a week, for three weeks for a total duration of 9 sessions in association with conventional treatment.~The vibration will be applied at a frequency of 100 Hz and an amplitude of 0.2 cm for 30 minutes (three sessions of 10 min each with 1 min break in between) three times a week for three weeks at the level of the quadriceps femoris and triceps surae bilaterally for balance improvement and stimulation of proprioception and in the trapezius and trunk extensor muscles bilaterally for pain relief."