Effect of Segmental Muscle Vibration on Upper Limb Function in Post Stroke Patients

Study Overview
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Brief Summary
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The aim of this study is to observe and to compare effects of segmental vibration on flexors versus extensor muscle groups on upper limb function in post-stroke patients. This study will be helpful in finding out that either low frequency segmental vibration on flexors muscle group is better in improving upper limb function or low frequency segmental vibration on extensor muscle group is more beneficent in improving upper limb function.

Detailed Description
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Stroke is the leading cause of long-term disability and is often associated with persistent involvement of upper limbs.Several disturbances are the manifestation of UL impairments after stroke (i.e., muscle weakness, changes in muscle tone, joint disturbances, impaired motor control) . Muscular weakness and spasticity are most commonly observed in post stroke patients. There are many strategies are developed to improve functional status and to reduce spasticity pattern in post stroke patients. Among the different approaches to improve motor functions in post stroke patients, vibration therapy gives strong stimulatory effects in post paretic limb. Segmental muscle vibration (SMV) is a fairly new technique that has been used to improve motor function and inhibit spasticity in the hemiplegic upper extremity of patients following a stroke. In SMV, a vibratory stimulus is applied to a specific muscle tendon using a mechanical device unit.The aim of this study is to observe and to compare effects of segmental vibration on flexors versus extensor muscle groups on upper limb function in post-stroke patients. This study will be helpful in finding out that either low frequency segmental vibration on flexors muscle group is better in improving upper limb function or low frequency segmental vibration on extensor muscle group is more beneficent in improving upper limb function.

Official Title
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Comparison Of Segmental Vibration On Flexors and Extensor Muscle Groups On Upper Limb Function In Post-Stroke Patients

Conditions
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Stroke

Intervention / Treatment
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* Device: segmental muscle vibration


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Both genders Age: between 50-65 years. Spasticity 1-3 on MAS 3-6 months post stroke patients Exclusion Criteria: Cardiovascular event (myocardial ischemia or infarction) occurring within 12 months, Use of any antispastic drug Pain from vibration Inflammatory osteoarticular diseases

Ages Eligible for Study
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Minimum Age: 50 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental Group A<br>will recieve (low frequency segmental muscle vibration of 41 Hz over flexors muscles of upper limb Pectoralis minor, Biceps brachii, Flexor carpi muscle + general physical therapy session ) The transducer applied perpendicular to the muscle near its distal tendon insertion.The application consisted of 3 vibration sessions each with duration of 5 minutes for each muscle with 1 minute interval separated these sessions during the interval muscle vibration will interrupted and the subject will request to relax the muscle | Device: segmental muscle vibration<br>* Segmental muscle vibration will delivered over the target muscles by means of vibrator with general physical therapy session<br>* Other names: general physical therapy session;|
| Experimental: Experimental Group B<br>group receive (low frequency segmental muscle vibration of 41 Hz over extensors muscles of upper limb Triceps brachii, Extensor carpi radialis longus & brevis + general physical therapy session ) The transducer applied perpendicular to the muscle near its distal tendon insertion The application consisted of 3 vibration sessions each with duration of 5 minutes for each muscle with 1 minute interval separated these sessions during the interval muscle vibration will interrupted and the subject will request to relax the muscle | Device: segmental muscle vibration<br>* Segmental muscle vibration will delivered over the target muscles by means of vibrator with general physical therapy session<br>* Other names: general physical therapy session;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Wolf Motor Functional Test | WMFT is valid and reliable on assessing upper extremities motor function of stroke patients. The WFMT is a tool with high interrater reliability, internal consistency, test-retest reliability and adequate stability. | 10 to 15 minutes | 
| Modified Ashworth Scale | This scale measures resistance during passive soft-tissue stretching and is used as a simple measure of spasticity | 4 to 5 minutes | 
| Fugl Meyer Assessment | Fugl Meyer Assessment | 10 minutes | 
| Manual Muscle Testing | to check muscle strength | 8 to 10 minutes | 
| • Brunnstrom Stages of Stroke Recovery • Brunnstrom Stages of Stroke Recovery Brunnstrom Stages of Stroke Recovery | to check the stages of improvemnet | 5 to 10 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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segmental muscle vibration,spasticity,upper limb function