Shoulder PainNCT07720050
Shoulder Pain, Core Endurance, and Scapular Control in Adolescent Volleyball Players
An observational study of Shoulder Pain and Scapular Dyskinesis, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
Trial summary
Shoulder pain is one of the most common musculoskeletal problems in adolescent volleyball players because of repetitive overhead activities such as serving and spiking. Although impaired scapular control and reduced core endurance have been suggested as potential contributors to shoulder pain, their combined… Read more about this study
- Who is it for?
- Ages 14 to 18 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Shoulder Pain, Scapular Dyskinesis, Core Endurance
- What is being tested?
- Visual Analog Scale (VAS), Scapular Dyskinesis Test and McGill Core Endurance Test Battery
- How many people
- 60 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Mar 2026to 25 Jun 2026
- How long will I take part?
- 1 Day
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 14 to 18 years
- Women only
- Healthy volunteers accepted
- Child, Adult
Study population: Licensed female adolescent volleyball players aged 14-18 years who were actively participating in volleyball training at Nevşehir Youth and Sports Center and met the study eligibility criteria.
Who may be able to join
- Female licensed volleyball players aged 14 to 18 years.
- Participation in regular volleyball training at least three times per week.
- Dominant upper extremity identified.
- Ability to understand the study procedures and provide informed assent.
- Written informed consent provided by a parent or legal guardian for participants younger than 18 years.
Who cannot join
- Shoulder surgery within the previous 6 months.
- Acute upper extremity or spinal injury.
- History of fracture affecting the upper extremity or spine.
- Neurological disorders affecting upper extremity function.
- Systemic rheumatologic disease.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Istanbul Gelisim University
Istanbul, Istanbul, 34310
About this study
Official title: Investigation of the Relationship Between Shoulder Pain, Core Endurance, and Scapular Control in Adolescent Volleyball Players: A Cross-Sectional Study
Shoulder pain is one of the most common musculoskeletal problems in adolescent volleyball players because of repetitive overhead activities such as serving and spiking. Although impaired scapular control and reduced core endurance have been suggested as potential contributors to shoulder pain, their combined relationship has not been sufficiently investigated in young volleyball athletes.
This observational cross-sectional study aims to examine the relationship between shoulder pain, core endurance, and scapular control in licensed adolescent volleyball players aged 14 to 18 years. Participants with and without shoulder pain will undergo standardized assessments, including the Visual Analog Scale (VAS) for pain intensity, the Scapular Dyskinesis Test for scapular control, and the McGill Core Endurance Test Battery for trunk muscle endurance. The findings are expected to improve the understanding of factors associated with shoulder pain and contribute to the development of injury prevention and rehabilitation strategies for adolescent volleyball players.
- Conditions
- Shoulder Pain, Scapular Dyskinesis, Core Endurance
- Being tested
- Visual Analog Scale (VAS), Scapular Dyskinesis Test, McGill Core Endurance Test Battery
- Medical subject headings
- Shoulder Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Visual Analog Scale (VAS)Diagnostic test
Assessment of shoulder pain intensity using a 10-cm Visual Analog Scale.
Scapular Dyskinesis TestDiagnostic test
Clinical assessment of scapular movement and control during repeated arm elevation.
McGill Core Endurance Test BatteryDiagnostic test
Assessment of trunk muscle endurance using flexor, extensor, and lateral bridge endurance tests.
| Study group | Role | What they receive |
|---|---|---|
| Shoulder Pain Group | Licensed adolescent volleyball players aged 14-18 years with shoulder pain. Participants underwent assessment of shoulder pain intensity using the Visual Analog Scale (VAS), scapular control using the Scapular Dyskinesis Test, and core muscle endurance using the McGill Core Endurance Test Battery. Receives: Diagnostic Test: Visual Analog Scale (VAS); Diagnostic Test: Scapular Dyskinesis Test; Diagnostic Test: McGill Core Endurance Test Battery | |
| Control Group | Licensed adolescent volleyball players aged 14-18 years without shoulder pain. Participants underwent the same standardized assessments, including the Visual Analog Scale (VAS), Scapular Dyskinesis Test, and McGill Core Endurance Test Battery. Receives: Diagnostic Test: Visual Analog Scale (VAS); Diagnostic Test: Scapular Dyskinesis Test; Diagnostic Test: McGill Core Endurance Test Battery |
What is being measured
The primary outcome is the main question the study is designed to answer.
Core Muscle Endurance
Core muscle endurance will be assessed using the McGill Core Endurance Test Battery, including trunk flexor, extensor, and bilateral side bridge endurance tests. Endurance time will be recorded in seconds.
Measured: Baseline (Single assessment, Day 1)
Secondary outcomes (2)
Scapular Control
Scapular control will be evaluated using the Scapular Dyskinesis Test. The presence or absence of scapular dyskinesis will be recorded during repeated arm elevation.
Measured: Baseline (Single assessment, Day 1)
Shoulder Pain Intensity
Shoulder pain intensity will be assessed using the 10-cm Visual Analog Scale (VAS). Scores range from 0 (no pain) to 10 (worst imaginable pain).
Measured: Baseline (Single assessment, Day 1)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jul 2026
- Study start15 Mar 2026
- Primary completion20 Jun 2026
- Study completion25 Jun 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Shoulder PainStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Enrolment
- 60 participants (actual)
- Target duration
- 1 Day
Sponsor and investigators
- Lead sponsor
- Istanbul Gelisim University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Görkem Açar, Istanbul Gelisim University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07720050
- Sponsor's protocol ID
- NVS-SHOULDER-2026-01
- Status last verified
- Jul 2026
- First submitted
- 18 Jul 2026
- Last updated
- 22 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 22 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Investigation of the Relationship Between Shoulder Pain, Core Endurance, and Scapular Control in Adolescent Volleyball Players: A Cross-Sectional Study
- ClinicalTrials.gov ID
- NCT07720050
- Acronym / sponsor ID
- NVS-SHOULDER-2026-01
- Conditions
- Shoulder Pain, Scapular Dyskinesis, Core Endurance
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Istanbul Gelisim UniversityUniversity, hospital or other
- Study start
- 15 Mar 2026 (actual)
- Primary completion
- 20 Jun 2026 (actual)
- Study completion
- 25 Jun 2026 (actual)
- First posted
- 22 Jul 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Shoulder pain is one of the most common musculoskeletal problems in adolescent volleyball players because of repetitive overhead activities such as serving and spiking. Although impaired scapular control and reduced core endurance have been suggested as potential contributors to shoulder pain, their combined relationship has not been sufficiently investigated in young volleyball athletes.
This observational cross-sectional study aims to examine the relationship between shoulder pain, core endurance, and scapular control in licensed adolescent volleyball players aged 14 to 18 years. Participants with and without shoulder pain will undergo standardized assessments, including the Visual Analog Scale (VAS) for pain intensity, the Scapular Dyskinesis Test for scapular control, and the McGill Core Endurance Test Battery for trunk muscle endurance. The findings are expected to improve the understanding of factors associated with shoulder pain and contribute to the development of injury prevention and rehabilitation strategies for adolescent volleyball players.
Study design
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Target follow-up
- 1 Day
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Shoulder Pain Group | – | Diagnostic Test: Visual Analog Scale (VAS), Diagnostic Test: Scapular Dyskinesis Test, Diagnostic Test: McGill Core Endurance Test BatteryLicensed adolescent volleyball players aged 14-18 years with shoulder pain. Participants underwent assessment of shoulder pain intensity using the Visual Analog Scale (VAS), scapular control using the Scapular Dyskinesis Test, and core muscle endurance using the McGill Core Endurance Test Battery. |
| Control Group | – | Diagnostic Test: Visual Analog Scale (VAS), Diagnostic Test: Scapular Dyskinesis Test, Diagnostic Test: McGill Core Endurance Test BatteryLicensed adolescent volleyball players aged 14-18 years without shoulder pain. Participants underwent the same standardized assessments, including the Visual Analog Scale (VAS), Scapular Dyskinesis Test, and McGill Core Endurance Test Battery. |
Who may qualify
- Ages
- 14 to 18 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
- Study population
- Licensed female adolescent volleyball players aged 14-18 years who were actively participating in volleyball training at Nevşehir Youth and Sports Center and met the study eligibility criteria.
Key inclusion criteria (5 listed)
- Female licensed volleyball players aged 14 to 18 years.
- Participation in regular volleyball training at least three times per week.
- Dominant upper extremity identified.
- Ability to understand the study procedures and provide informed assent.
- Written informed consent provided by a parent or legal guardian for participants younger than 18 years.
Key exclusion criteria (5 listed)
- Shoulder surgery within the previous 6 months.
- Acute upper extremity or spinal injury.
- History of fracture affecting the upper extremity or spine.
- Neurological disorders affecting upper extremity function.
- Systemic rheumatologic disease.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Visual Analog Scale (VAS)Assessment of shoulder pain intensity using a 10-cm Visual Analog Scale. | Diagnostic test | Control Group, Shoulder Pain Group |
| Scapular Dyskinesis TestClinical assessment of scapular movement and control during repeated arm elevation. | Diagnostic test | Control Group, Shoulder Pain Group |
| McGill Core Endurance Test BatteryAssessment of trunk muscle endurance using flexor, extensor, and lateral bridge endurance tests. | Diagnostic test | Control Group, Shoulder Pain Group |
Primary outcome
Core Muscle Endurance
Time frame: Baseline (Single assessment, Day 1)
Core muscle endurance will be assessed using the McGill Core Endurance Test Battery, including trunk flexor, extensor, and bilateral side bridge endurance tests. Endurance time will be recorded in seconds.
2 secondary outcomes
Scapular Control
Time frame: Baseline (Single assessment, Day 1)
Shoulder Pain Intensity
Time frame: Baseline (Single assessment, Day 1)
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Jul 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Shoulder Pain and Scapular Dyskinesis, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 22 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Core Muscle Endurance (time frame: Baseline (Single assessment, Day 1)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Jul 2026.