Comparison of Electromyographic Activity of Selected Shoulder Girdle Muscles Following a Core Muscle Fatigue Protocol in Overhead Athletes With and Without Scapular Dyskinesis
The aim of the study was to compare the electrical activity of selected shoulder girdle muscles under the influence of core muscle fatigue in athletes with and without scapular dyskinesis.
Design
A parallel clinical trial. Among athletes performing overhead movements, 15 of them with scapular dyskinesis and 15 of them without dyskinesis are randomly selected.
Settings and conduct
This study will be conducted in the corrective movement laboratory of Shahrekord University. After the examinations, the participants will be placed in the dyskinesia group and the healthy group during the evaluation process. Before the start of the study, all individuals will be examined for the desired outcomes and will be re-evaluated after the measurement is completed. In this study, all assessments will be made by the therapist.
Participants/Inclusion and exclusion criteria
Male gender - Positive or negative tests for scapular dyskinesis - Having an age range between 15 and 20 years - Having at least 3 years of sports experience in disciplines with overhead arm movements - Doing regular exercise three sessions per week - No history of injuries such as dislocations or fractures or surgery in any of the bones of the shoulder girdle - No complete rupture of the shoulder girdle muscles - No atrophy of the shoulder muscles - No pain during the tests and protocol
Intervention groups
This study will involve overhead athletes aged 18 to 25 with and without scapular dyskinesis, and the electrical activity of selected muscles (eight muscles) will be measured before and after core muscle fatigue.
Main outcome variables
Electrical activity of selected shoulder girdle muscles
General information
Reason for update
Acronym
IRCT registration information
IRCT registration number:IRCT20250413065306N3
Registration date:2025-10-27, 1404/08/05
Registration timing:prospective
Last update:2025-10-27, 1404/08/05
Update count:0
Registration date
2025-10-27, 1404/08/05
Registrant information
Name
Banafsheh Mohammadi
Name of organization / entity
Shahrekord University
Country
Iran (Islamic Republic of)
Phone
+98 38 3232 0372
Email address
b.mohammadi@sku.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2025-11-06, 1404/08/15
Expected recruitment end date
2025-11-21, 1404/08/30
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Comparison of Electromyographic Activity of Selected Shoulder Girdle Muscles Following a Core Muscle Fatigue Protocol in Overhead Athletes With and Without Scapular Dyskinesis
Public title
Comparison of Electromyographic Activity of Selected Shoulder Girdle Muscles Following a Core Muscle Fatigue Protocol in Overhead Athletes With and Without Scapular Dyskinesis
Purpose
Health service research
Inclusion/Exclusion criteria
Inclusion criteria:
Being an overhead athlete
Positive or negative results of scapular dyskinesis tests
Having at least 3 years of sports experience
Regular exercise sessions three times a week
Voluntary consent of subjects to participate in the research
Exclusion criteria:
History of injuries, such as dislocations or fractures, to any shoulder girdle bones
History of shoulder or trunk surgery within the past 1 year
History of direct contact injury to the neck or upper limb within the past 1 month
Complete rupture of shoulder girdle muscles
Having adhesive capsulitis
Any atrophy in the shoulder muscle area
Presence of severe musculoskeletal disorders in the upper limbs including forward head, rounded shoulders, kyphosis, scoliosis
Diagnosis of injury to the long thoracic nerve or accessory nerve
Any pain during the tests and protocol
Age
From 18 years old to 25 years old
Gender
Male
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size:
30
Randomization (investigator's opinion)
Not randomized
Randomization description
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Parallel
Other design features
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Working Group/Research Ethics Committee of Shahrekord University
Street address
Rahbar Boulevard
City
Shahrekord
Province
Chahar-Mahal-va-Bakhtiari
Postal code
8818634141
Approval date
2025-07-17, 1404/04/26
Ethics committee reference number
IR.SKU.REC.1404.002
Health conditions studied
1
Description of health condition studied
Scapular Dyskinesis
ICD-10 code
ICD-10 code description
Primary outcomes
1
Description
Measuring electrical activity of muscles
Timepoint
Before and after performing the core muscle fatigue protocol
Method of measurement
Electromyography device
Secondary outcomes
empty
Intervention groups
1
Description
Subjects perform a core muscle fatigue protocol consisting of 4 consecutive sets of 7 exercises, with each subject performing each exercise 20 times for 40 seconds (each repetition for 2 seconds).
Category
Prevention
2
Description
Control group: (Healthy people): This group does not receive any intervention.
Category
N/A
Recruitment centers
1
Recruitment center
Name of recruitment center
Corrective Exercise and Sports Pathology Laboratory, Shahrekord University
Full name of responsible person
Matin Esmaeili Bavani
Street address
Rahbar Boulevard
City
Shahrekord
Province
Chahar-Mahal-va-Bakhtiari
Postal code
8818634141
Phone
+98 913 798 3050
Email
matin.esm12@gmail.com
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
Shahrekord University
Full name of responsible person
Banafshe Mohammadi
Street address
Rahbar Boulevard
City
Shahrekord
Province
Chahar-Mahal-va-Bakhtiari
Postal code
8818634141
Phone
+98 38 3232 4407
Email
bmohammadi290@gmail.com
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Shahrekord University
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic
Person responsible for general inquiries
Contact
Name of organization / entity
Shahrekord University
Full name of responsible person
Banafshe Mohammadi
Position
Assistant Professor
Latest degree
Ph.D.
Other areas of specialty/work
Sport Biomechanics
Street address
Rahbar Boulevard
City
Shahrekord
Province
Chahar-Mahal-va-Bakhtiari
Postal code
8818634141
Phone
+98 38 3232 4407
Email
bmohammadi290@gmail.com
Person responsible for scientific inquiries
Contact
Name of organization / entity
Shahrekord University
Full name of responsible person
Banafshe Mohammadi
Position
Assistant Professor
Latest degree
Ph.D.
Other areas of specialty/work
Sport Biomechanics
Street address
Rahbar Boulevard
City
Shahrekord
Province
Chahar-Mahal-va-Bakhtiari
Postal code
8818634141
Phone
+98 38 3232 4407
Email
bmohammadi290@gmail.com
Person responsible for updating data
Contact
Name of organization / entity
Shahrekord University
Full name of responsible person
Banafshe Mohammadi
Position
Assistant Professor
Latest degree
Ph.D.
Other areas of specialty/work
Sport Biomechanics
Street address
Rahbar Boulevard
City
Shahrekord
Province
Chahar-Mahal-va-Bakhtiari
Postal code
8818634141
Phone
+98 38 3232 4407
Email
bmohammadi290@gmail.com
Sharing plan
Deidentified Individual Participant Data Set (IPD)
Yes - There is a plan to make this available
Study Protocol
Yes - There is a plan to make this available
Statistical Analysis Plan
Yes - There is a plan to make this available
Informed Consent Form
Yes - There is a plan to make this available
Clinical Study Report
Yes - There is a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Yes - There is a plan to make this available
Title and more details about the data/document
With permission from project partners, all information can be shared after being de-identified.
When the data will become available and for how long
Start the access period one year after printing the results.
To whom data/document is available
Data will be available to academic and scientific researchers.
Under which criteria data/document could be used
Any kind of functional analysis on the submitted data is allowed
From where data/document is obtainable
By Email: b.mohammadi@sku.ac.ir
What processes are involved for a request to access data/document
Via email: mohammadi@sku.ac.ir and mention the use of the documents.