The Reflex Mechanism Underlying Neuromuscular Effects Of The Whole Body Vibration

Study Overview
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Brief Summary
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This study was conducted to determine whether the spinal reflex mechanism underlying the neuromuscular effects of whole body vibration (WBV) is tonic vibration reflex. Local and whole body vibration reflex latencies were measured in young adult healthy volunteers.

Detailed Description
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A total of eight volunteers were included according to the inclusion and exclusion criteria. The subjects were vibrated while standing upright with the WBV device (PowerPlate® Pro5). The 30, 35 and 40 Hz WBVs were applied for thirty seconds for each frequency with an amplitude of 2 mm. In the same session, 100, 135 and 150 Hz local vibrations were applied to the right Achilles tendon for thirty seconds for each frequency. 100, 135 and 150 Hz local vibrations were then applied to the right heel for thirty seconds for each frequency with an interval of five seconds. Vibration stimuli were recorded accelerometers. Reflex muscle responses were recorded from the right soleus muscle at a sampling rate of 40 KHz. Recording electrodes were placed on the belly of the right soleus muscle and the ground electrode was placed on the right medial malleolus. The data were recorded with the PowerLab device, the records were processed and analyzed offline from the LabChart program. After the EMG records are filtered and rectified, reflex latencies were measured by cumulative averaging method using the accelerometer records as triggers (Karacan I, Cakar HI, Sebik O, Yilmaz G, Cidem M, Kara S, Türker KS.A new method to determine reflex latency induced by high rate stimulation of the nervous system.Front Hum Neurosci.2014 Jul 18; 8: 536.doi: 10.3389 / fnhum.2014.00536). After determining the Achilles tendon vibration reflex latency and the reflex latency induced by WBV, it was compared with statistical methods.

Official Title
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The Reflex Mechanism Underlying The Neuromuscular Effects Of The Whole Body Vibration

Conditions
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Reflex, Ankle, Decreased

Intervention / Treatment
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* Other: vibration


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy Young adult (20-40 years old) Both gender Volunteer Exclusion Criteria: Cardiac disorder (Rhythm / conduction disorder, Cardiac pacemaker, Ischemic heart disease) Finding or suspected active deep vein thrombosis, History of deep vein thrombosis and pulmonary embolism, Orthostatic hypotension Hypertension Presence of fracture in the lower limb Achilles Contractures Active inflammatory, rheumatological or infectious disease in the lower limb Peripheral nerve lesions such as polyneuropathy, radiculopathy in the lower limb Those with a history of Achilles tendinopathy / bursitis Those with a history of kidney stones Patients with dizziness and balance problems, Cases with lesions on the skin surface where electrodes were attached Those with communication-cooperation problems Having a history of panic attacks

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Interventional Model Description: Self controlled experimental study
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experiment<br>Local and whole body vibration were applied | Other: vibration<br>* local and whole-body vibration were applied<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| reflex latency | The time between the vibration stimulus and the reflex muscle response triggered by it was defined as the latency. | during intervention, an average of 8 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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whole body vibration, tonic vibration reflex, muscle spindle