Groin InjuryNCT06104722
Comparison of the Effect of Copenhagen Adduction Exercises Performed at Different Load-intensity
A study testing High-intensity Copenhagen adduction exercise and Low-intensity Copenhagen adduction exercise in people with Groin Injury, run by Hacettepe University at 1 site in Turkey (Türkiye).
Trial summary
The aim of our study is to compare the effects of the Copenhagen adduction exercise, performed at different loading intensities, on hip muscle strength development, performance, flexibility, and delayed onset muscle soreness. The study will include active taekwondo athletes between the ages of 12-18. Read more about this study
- Who is it for?
- Ages 12 to 18 yearsHealthy volunteers can take part
- Conditions the study is for
- Groin Injury
- What is being tested?
- High-intensity Copenhagen adduction exercise and Low-intensity Copenhagen adduction exercise
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Jan 2024to 15 Jul 2024
- Phase
- Interventional
- 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 12 to 18 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Being between the ages of 12-18
- Having a minimum of 3 years of experience as a taekwondo athlete
- Not having experienced any back, hip, or groin injuries in the last 12 months
- Participating in training sessions at least 3 days a week
- Being available to attend exercise training for 8 weeks
Who cannot join
- Having had a lower extremity orthopedic injury within the last 3 months
- Having an injury related to the hip and groin region
- Reporting a pain level of 4 or higher on the visual pain scale during the adductor squeeze test and palpation of the adductor muscles
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Hacettepe University
Ankara, Altındag, 06100
Ezgi Unüvar, 05078337676, unuvarezgi@gmail.com
About this study
Official title: Comparison of the Effects of Copenhagen Adduction Exercise Performed at Different Loading Intensities on Hip Muscle Strength Development, Delayed Muscle Soreness, and Lower Extremity Physical Fitness Parameters
The aim of our study is to compare the effects of the Copenhagen adduction exercise, performed at different loading intensities, on hip muscle strength development, performance, flexibility, and delayed onset muscle soreness. The study will include active taekwondo athletes between the ages of 12-18. Athletes will be randomly divided into two groups: a low-intensity Copenhagen Adduction exercise group and a high-intensity Copenhagen Adduction exercise group. Athletes in both the low-intensity and high-intensity exercise groups will perform the exercise for 8 weeks in addition to their regular training program. At the beginning of the study and at the 4th, 8th, and 16th weeks, assessments will be conducted for hip abductor and adductor eccentric and isometric muscle strength, flexibility of the hip adductors, level of delayed muscle soreness, single-leg jump test, and timed lateral hop tests. The outcome of our study will determine how much improvement is achieved in hip muscle strength and lower extremity physical fitness parameters during and after the application of the Copenhagen adduction exercise at different loading intensities.
Read the detailed description
The study is a single-blind randomized controlled trial including male and female adolescent taekwondo athletes (12-18 years). Evaluators will be blinded to which group are assessing.
Participants will be recruited from the local sports clubs. Club coaches will be asked to invite club players. Players interested in participating in the study will be asked to attend a meeting where the study will be explained to them. Those who were interested will then be assessed for inclusion and exclusion criteria.
Interventions:
Sports clubs are allocated to the high-intensity Copenhagen adductor exercise group (HCAE) or the low-intensity Copenhagen adduction exercise group (LCAE). Athletes in both the low-intensity and high-intensity exercise groups will perform the exercise for 8 weeks. Athletes in the HCAE group will perform the classic Copenhagen adduction exercise protocol and at LCAE group will perform the modified Copenhagen adduction exercise protocol.
Testing procedure:
The following tests will be performed before the exercise and 4th - 8th - 16th weeks after the beginning of the exercise.
The isometric and eccentric strength of the hip adductors and abductors Hip adduction flexibility Single-leg hop test Side hop test
A 10-point visual analog scale will be used to record the level of muscle soreness and rate of perceived exertion experienced after each training session.
- Conditions
- Groin Injury
- Being tested
- High-intensity Copenhagen adduction exercise, Low-intensity Copenhagen adduction exercise
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
High-intensity Copenhagen adduction exerciseOther
Copenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation.
Low-intensity Copenhagen adduction exerciseOther
Copenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation.
| Study group | Role | What they receive |
|---|---|---|
| high intensity copenhagen adduction exercise group | Experimental | Athletes in the high-intensity copenhagen adduction exercise group will perform classic copenhagen adduction exercise protocol. Receives: Other: High-intensity Copenhagen adduction exercise |
| low intensity copenhagen adduction exercise group | Experimental | Athletes in the low-intensity copenhagen adduction exercise group will perform a modified copenhagen adduction exercise protocol. Receives: Other: Low-intensity Copenhagen adduction exercise |
What is being measured
The primary outcome is the main question the study is designed to answer.
hip muscle strength
isometric and eccentric hip adductor and abductor muscle strength will assess with a hand-held dynamometer.
Measured: beginning and 4th-8th-16th weeks after beginning
Secondary outcomes (4)
lower extremity performance
single leg hop test and side hop test
Measured: beginning and 4th-8th-16th weeks after beginning
hip adduction flexibility
hip adduction range of motion will assess with a goniometer.
Measured: beginning and 4th-8th-16th weeks after beginning
delayed onset muscle soreness
delayed onset muscle soreness will assessed with visual analog scale.
Measured: immediately after each exercise session, through 8 weeks
rate of perceived exertion
rate of perceived exertion will assessed with BORG CR10 scale(Borg Rating Of Perceived Exertion).
Measured: immediately after each exercise session, through 8 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Oct 2023
- Study start15 Jan 2024
- Primary completion15 Jun 2024 (estimated)
- Study completion15 Jul 2024 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Groin InjuryStudies of the same condition, open and under way.
- More trials run by Hacettepe UniversityThe sponsor's other registered studies.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Screening
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Hacettepe University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ezgi Unuvar-Yuksel, Hacettepe University
- Investigators
- Hande Guney-Deniz, Prof, Study director, Hacettepe University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06104722
- Sponsor's protocol ID
- copenhagentkd2023
- Status last verified
- Jun 2024
- First submitted
- 12 Oct 2023
- Last updated
- 5 Jun 2024
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Unuvar-Yuksel E, Bozgeyik-Bagdatli S, Bazancir-Apaydin Z, Guney-Deniz H. Early strength gains in eccentric hip adduction and adduction-to-abduction ratio following an 8-week Copenhagen Adduction Exercise in elite adolescent taekwondo athletes. J Bodyw Mov Ther. 2025 Dec;45:304-310. doi: 10.1016/j.jbmt.2025.09.008. Epub 2025 Sep 5.
PubMed 41316591
Study at a glance
From the registry record, last updated by the sponsor on 5 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of the Effects of Copenhagen Adduction Exercise Performed at Different Loading Intensities on Hip Muscle Strength Development, Delayed Muscle Soreness, and Lower Extremity Physical Fitness Parameters
- ClinicalTrials.gov ID
- NCT06104722
- Acronym / sponsor ID
- copenhagentkd2023
- Conditions
- Groin Injury
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Hacettepe UniversityUniversity, hospital or other
- Study start
- 15 Jan 2024 (actual)
- Primary completion
- 15 Jun 2024 (estimated)
- Study completion
- 15 Jul 2024 (estimated)
- First posted
- 27 Oct 2023 (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.
The aim of our study is to compare the effects of the Copenhagen adduction exercise, performed at different loading intensities, on hip muscle strength development, performance, flexibility, and delayed onset muscle soreness. The study will include active taekwondo athletes between the ages of 12-18. Athletes will be randomly divided into two groups: a low-intensity Copenhagen Adduction exercise group and a high-intensity Copenhagen Adduction exercise group. Athletes in both the low-intensity and high-intensity exercise groups will perform the exercise for 8 weeks in addition to their regular training program. At the beginning of the study and at the 4th, 8th, and 16th weeks, assessments will be conducted for hip abductor and adductor eccentric and isometric muscle strength, flexibility of the hip adductors, level of delayed muscle soreness, single-leg jump test, and timed lateral hop tests. The outcome of our study will determine how much improvement is achieved in hip muscle strength and lower extremity physical fitness parameters during and after the application of the Copenhagen adduction exercise at different loading intensities.
Detailed description
The study is a single-blind randomized controlled trial including male and female adolescent taekwondo athletes (12-18 years). Evaluators will be blinded to which group are assessing.
Participants will be recruited from the local sports clubs. Club coaches will be asked to invite club players. Players interested in participating in the study will be asked to attend a meeting where the study will be explained to them. Those who were interested will then be assessed for inclusion and exclusion criteria.
Interventions:
Sports clubs are allocated to the high-intensity Copenhagen adductor exercise group (HCAE) or the low-intensity Copenhagen adduction exercise group (LCAE). Athletes in both the low-intensity and high-intensity exercise groups will perform the exercise for 8 weeks. Athletes in the HCAE group will perform the classic Copenhagen adduction exercise protocol and at LCAE group will perform the modified Copenhagen adduction exercise protocol.
Testing procedure:
The following tests will be performed before the exercise and 4th - 8th - 16th weeks after the beginning of the exercise.
The isometric and eccentric strength of the hip adductors and abductors Hip adduction flexibility Single-leg hop test Side hop test
A 10-point visual analog scale will be used to record the level of muscle soreness and rate of perceived exertion experienced after each training session.
Study design
- Primary purpose
- Screening
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| high intensity copenhagen adduction exercise group | Experimental | Other: High-intensity Copenhagen adduction exerciseAthletes in the high-intensity copenhagen adduction exercise group will perform classic copenhagen adduction exercise protocol. |
| low intensity copenhagen adduction exercise group | Experimental | Other: Low-intensity Copenhagen adduction exerciseAthletes in the low-intensity copenhagen adduction exercise group will perform a modified copenhagen adduction exercise protocol. |
Who may qualify
- Ages
- 12 to 18 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (5 listed)
- Being between the ages of 12-18
- Having a minimum of 3 years of experience as a taekwondo athlete
- Not having experienced any back, hip, or groin injuries in the last 12 months
- Participating in training sessions at least 3 days a week
- Being available to attend exercise training for 8 weeks
Key exclusion criteria (3 listed)
- Having had a lower extremity orthopedic injury within the last 3 months
- Having an injury related to the hip and groin region
- Reporting a pain level of 4 or higher on the visual pain scale during the adductor squeeze test and palpation of the adductor muscles
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 |
|---|---|---|
| High-intensity Copenhagen adduction exerciseCopenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation. | Other | high intensity copenhagen adduction exercise group |
| Low-intensity Copenhagen adduction exerciseCopenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation. | Other | low intensity copenhagen adduction exercise group |
Primary outcome
hip muscle strength
Time frame: beginning and 4th-8th-16th weeks after beginning
isometric and eccentric hip adductor and abductor muscle strength will assess with a hand-held dynamometer.
4 secondary outcomes
lower extremity performance
Time frame: beginning and 4th-8th-16th weeks after beginning
hip adduction flexibility
Time frame: beginning and 4th-8th-16th weeks after beginning
delayed onset muscle soreness
Time frame: immediately after each exercise session, through 8 weeks
rate of perceived exertion
Time frame: immediately after each exercise session, through 8 weeks
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Jun 2024.
- Derived from this study: PubMed 41316591Unuvar-Yuksel E, Bozgeyik-Bagdatli S, Bazancir-Apaydin Z, Guney-Deniz H. Early strength gains in eccentric hip adduction and adduction-to-abduction ratio following an 8-week Copenhagen Adduction Exercise in elite adolescent taekwondo athletes. J Bodyw Mov Ther. 2025 Dec;45:304-310. doi: 10.1016/j.jbmt.2025.09.008. Epub 2025 Sep 5.
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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.
Hande Guney-Deniz, Prof study director
Hacettepe University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing High-intensity Copenhagen adduction exercise and Low-intensity Copenhagen adduction exercise in people with Groin Injury, run by Hacettepe 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 3 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: status not confirmed, as of the sponsor's last update on 5 Jun 2024. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Ezgi Unuvar-Yuksel (+905078337676, unuvarezgi@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
hip muscle strength (time frame: beginning and 4th-8th-16th weeks after beginning). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06104722, which also lists 1 linked publication.
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 5 Jun 2024.