Effects of Whole Body Vibration in Parkinson's Disease Symptoms

The goal of this clinical trial is to know the effects of an intervention in Parkinson's disease symptoms. The main question it aims to answer are: Is whole body vibration able to reduce rigidity in Parkinson's participants? Can whole body vibration modify gait abilities and other Parkinson's symptoms? Participants (subjects with Parkinson's disease) will do habitual therapy treatment. Experimental group will also carry out whole body vibration sessions and control group will do placebo whole body vibration sessions.

Whole body vibration will be administered with a vibration platform (Power Plate Move). Subjects will do several exercises (squats and steps) whilst on the platform, set at these parameters: frequency 30 Hz; amplitude: 2 mm; 1 min activation; 1 min rest, 5 activations. 15 sessions will be carried out (2/week).

Physical therapy will be administered to all study subjects. Experimental group will perform their session the same day that the experimental intervention.

Placebo whole body vibration will be administered with a vibration platform (Power Plate Move). Subjects will do several exercises (squats and steps) whilst on the platform. The platform will only be working for 3 seconds (parameters: frequency 30 Hz; amplitude: 2 mm) and after 3 seconds, the vibration will stop. Same as experimental group, there will be 1 min placebo activation; 1 min rest, 5 activations. 15 sessions will be carried out (2/week).

Muscle tone will be measured using Myoton Pro (Hz) in the following sites: plantar fascia, Achilles tendon, soleus, gastrocnemius, erector spinae (L3-L4, T12-L1, T8-T9,T3-T4 and C7-T1) , transversus abdominus, rectus femoris, infrapatellar tendon and anterior tibialis . Measures will be taken twice bilaterally.

Muscle stiffness will be measured using Myoton Pro (N/m) in the following sites: plantar fascia, Achilles tendon, soleus, gastrocnemius, erector spinae (L3-L4, T12-L1, T8-T9,T3-T4 and C7-T1) , transversus abdominus, rectus femoris, infrapatellar tendon and anterior tibialis . Measures will be taken twice bilaterally.

Muscle elasticity will be measured using Myoton Pro (logarithmic decrement) in the following sites: plantar fascia, Achilles tendon, soleus, gastrocnemius, erector spinae (L3-L4, T12-L1, T8-T9,T3-T4 and C7-T1) , transversus abdominus, rectus femoris, infrapatellar tendon and anterior tibialis . Measures will be taken twice bilaterally.

Muscle tone will be measured using Myoton Pro (Hz) in the following sites: plantar fascia, Achilles tendon, soleus, gastrocnemius, erector spinae (L3-L4, T12-L1, T8-T9,T3-T4 and C7-T1) , transversus abdominus, rectus femoris, infrapatellar tendon and anterior tibialis . Measures will be taken twice bilaterally.

Muscle stiffness will be measured using Myoton Pro (N/m) in the following sites: plantar fascia, Achilles tendon, soleus, gastrocnemius, erector spinae (L3-L4, T12-L1, T8-T9,T3-T4 and C7-T1) , transversus abdominus, rectus femoris, infrapatellar tendon and anterior tibialis . Measures will be taken twice bilaterally.

Muscle elasticity will be measured using Myoton Pro (logarithmic decrement) in the following sites: plantar fascia, Achilles tendon, soleus, gastrocnemius, erector spinae (L3-L4, T12-L1, T8-T9,T3-T4 and C7-T1) , transversus abdominus, rectus femoris, infrapatellar tendon and anterior tibialis . Measures will be taken twice bilaterally.

This outcome will be measured with the Modified Emory Functional Ambulation Profile. This scale assesses functional ambulation in terms of assistance and time under five different environmental conditions. Since time (seconds) if the main measure, there is not top score and the higher the score, the worse is the performance.

This outcome will be measured with the Modified Emory Functional Ambulation Profile. This scale assesses functional ambulation in terms of assistance and time under five different environmental conditions. Since time (seconds) if the main measure, there is not top score and the higher the score, the worse is the performance.

The degree of thoracic kyphosis will be measure with the mobile application Goniometer Pro (degrees). The mobile will the placed at T1 and T12 and will measure the angle between them.

The degree of thoracic kyphosis will be measure with the mobile application Goniometer Pro (degrees). The mobile will the placed at T1 and T12 and will measure the angle between them.

This outcome will be measured with the Parkinson's Disease Questionnaire (PDQ-399). This questionnaire assesses how often people with Parkinson's experience difficulties across 8 dimensions of daily living. The scores ranges between 0 and 800, with a lower score reflecting better quality of life.

This outcome will be measured with the Parkinson's Disease Questionnaire (PDQ-399). This questionnaire assesses how often people with Parkinson's experience difficulties across 8 dimensions of daily living. The scores ranges between 0 and 800, with a lower score reflecting better quality of life.

This outcome will be measured with the Freezing of Gait Questionary. This scale assesses the severity and the frequency of the episodes of freezing during gait. It also considers the relationship of these episodes with other gait and motor aspects.The scores ranges between 0 and 24, with a lower score less freezing episodes.

This outcome will be measured with the Freezing of Gait Questionary. This scale assesses the severity and the frequency of the episodes of freezing during gait. It also considers the relationship of these episodes with other gait and motor aspects.The scores ranges between 0 and 24, with a lower score less freezing episodes.

This outcome will be measure with the section of reactive balance assessment of the Balance Evaluation System Test (BESTest). This section includes 5 items that specifically measures reactive balance and compensatory responses in all directions. The scores ranges between 0 and 18, with a lower score reflecting worse reactive balance.

This outcome will be measure with the section of reactive balance assessment of the Balance Evaluation System Test (BESTest). This section includes 5 items that specifically measures reactive balance and compensatory responses in all directions. The scores ranges between 0 and 18, with a lower score reflecting worse reactive balance.

Inclusion Criteria: Diagnosis of Parkinson Disease, in phase I and II according to Hoehn & Yahr phases. Able to maintain independently standing position. Able to understand instructions and score >24 in Minimental Test. Exclusion Criteria: Changes in pharmacological treatment for PD symptoms during the study. Recent injuries in the last 12 weeks in lower limbs or trunk. Other neurological conditions not related to Parkinsonism.