Whole Body Vibration Induced Muscle Activity and Effect of the Changes in Length of Soleus Muscle and Angle of Ankle (WBVIMR-SL)

July 25, 2015 updated by: Ilhan Karacan, Clinical Associated Professor, Bagcilar Training and Research Hospital

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

Previous studies reported that myoelectrical activity increased during whole body vibration (WBV). The investigators hypothesized that the change in soleus muscle length does not affect the whole body vibration induced soleus reflex muscle activity but the change in ankle angle affects the whole body induced soleus reflex muscle activity. The purpose of this study is to test this hypothesis.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

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

Enrollment (Actual)

18

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 40 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Healthy men
  • Men with ages varying between 20 and 40 years
  • Right-handed men

Exclusion Criteria:

  • Bone, muscle/tendon, joint, vascular, dermatologic diseases in lower extremities and spine
  • Medication that could affect the musculoskeletal system
  • Postural abnormalities (scoliosis, kyphosis, etc)
  • Systemic diseases (Cardiopulmonary diseases, diabetes mellitus etc)
  • Obesity (BMI>30 kg/m2)
  • Vertigo / dizziness

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: BASIC_SCIENCE
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Vibration
Whole body vibration with 35 Hz
Other: vibration
vibration will be applied at 35 Hz

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Vibration induced reflex muscle activity level
Time Frame: Four months
Four months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Bagcilar Training and Research Hospital

Investigators

  • Study Chair: 90 212 4404000 90 212 4404000, MD, Bagcilar Training & Research Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2015

Primary Completion (ACTUAL)

June 1, 2015

Study Completion (ACTUAL)

July 1, 2015

Study Registration Dates

First Submitted

June 8, 2015

First Submitted That Met QC Criteria

June 9, 2015

First Posted (ESTIMATE)

June 10, 2015

Study Record Updates

Last Update Posted (ESTIMATE)

July 28, 2015

Last Update Submitted That Met QC Criteria

July 25, 2015

Last Verified

July 1, 2015

More Information

Terms related to this study

Other Study ID Numbers

  • BEAH FTR-10

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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