Whole Body Vibration Induced Muscle Activity and Effect of the Changes in Length of Soleus Muscle and Angle of Ankle (WBVIMR-SL)
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|ClinicalTrials.gov Identifier: NCT02468011|
Recruitment Status : Completed
First Posted : June 10, 2015
Last Update Posted : July 28, 2015
|Condition or disease||Intervention/treatment||Phase|
|Muscle Physiology||Other: vibration||Not Applicable|
Eighteen healthy young adult men are planned to include in this study. Surface electrodes will be placed on the right soleus muscle's belly. The electrodes (10-mm in diameter, inter-electrode distance of 20 mm) were arranged in the direction of the muscle fibers. The skin overlying the muscle was shaved, light abrasion was applied, and the skin was cleaned using 70% alcohol.
A piezo-electric accelerometer (LIS344ALH full-scale of ±6 g linear accelerometer, ECOPACK) will be placed on the achilles tendon and a force sensor (FC2331-0000-2000L Compression Load Sensor, France) will be placed under the right heel. All data will be recorded by PowerLab (data acquisition system, ADInstruments, Australia) device. The data were processed offline with a computer. All surface electromyography (SEMG) analyses were conducted using a software (LABCHART7 ver. 7.3.3; POWERLAB System, ADInstruments). All SEMG recordings were 80-500 Hz band-pass filtered. Root-mean-square values (RMS) were calculated from the filtered SEMG signal.
WBV (PowerPlate Pro5) with high amplitude at 35 Hz will be applied. Participants were barefooted, and no sponge or foam was placed between the vibration platform and their feet. Participants will stand in different position with their knees locked during WBV. Their hips and knees were in a neutral position. Positions: Position-1: Upright standing on zero sloping vibration platform Position-2: Standing with 10 degrees ankle dorsiflexion on zero sloping vibration platform Position-3: Standing with 20 degrees ankle plantarflexion on zero sloping vibration platform Position-4: Upright standing on twenty degrees forward inclined vibration platform (angle angle will be 20 degrees ankle plantarflexion) Position-5: Leaning forward while standing on twenty degrees forward inclined vibration platform (angle angle will be neutral) Position-6: Upright standing on 10 degrees backward inclined vibration platform (angle angle will be 20 degrees ankle dorsiflexion) Position-7: Leaning backward while standing on 10 degrees backward inclined vibration platform (angle angle will be neutral) Sequence of the position will be random. Maximal voluntary contraction (MVC) was determined for each subject at the beginning of each position using magnitude of force between heel and vibration platform the when the subject attempted to activate the soleus muscle maximally. Then vibration exposure will be 30 seconds.
The participants were instructed to relax their muscles throughout the recordings during WBV and were trained using electromyographic feedback to this end. WBV may impair the sense of balance and muscles may be activated to restore balance. To overcome this problem, the participants were familiarized with WBV with a 15 s trial session on the WBV device and they were asked to use the handles of the device to secure their balance.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||18 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Primary Purpose:||Basic Science|
|Official Title:||Whole Body Vibration Induced Muscle Activity in Different Position of Lower Extremity: Effect of the Changes in Length of Soleus Muscle and Angle of Ankle|
|Study Start Date :||June 2015|
|Actual Primary Completion Date :||June 2015|
|Actual Study Completion Date :||July 2015|
Whole body vibration with 35 Hz
vibration will be applied at 35 Hz
- Vibration induced reflex muscle activity level [ Time Frame: Four months ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02468011
|Study Chair:||90 212 4404000 90 212 4404000, MD||Bagcilar Training & Research Hospital|