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Comparison of the Effect of Copenhagen Adduction Exercises Performed at Different Load-intensity

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

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06104722
Enrollment
30
Registered
2023-10-27
Start date
2024-01-15
Completion date
2024-07-15
Last updated
2024-06-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Groin Injury

Brief 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. 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.

Interventions

OTHERHigh-intensity Copenhagen adduction exercise

Copenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation.

OTHERLow-intensity Copenhagen adduction exercise

Copenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation.

Sponsors

Hacettepe University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
12 Years to 18 Years
Healthy volunteers
Yes

Inclusion criteria

* 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

Exclusion criteria

* 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

Design outcomes

Primary

MeasureTime frameDescription
hip muscle strengthbeginning and 4th-8th-16th weeks after beginningisometric and eccentric hip adductor and abductor muscle strength will assess with a hand-held dynamometer.

Secondary

MeasureTime frameDescription
lower extremity performancebeginning and 4th-8th-16th weeks after beginningsingle leg hop test and side hop test
hip adduction flexibilitybeginning and 4th-8th-16th weeks after beginninghip adduction range of motion will assess with a goniometer.
delayed onset muscle sorenessimmediately after each exercise session, through 8 weeksdelayed onset muscle soreness will assessed with visual analog scale.
rate of perceived exertionimmediately after each exercise session, through 8 weeksrate of perceived exertion will assessed with BORG CR10 scale(Borg Rating Of Perceived Exertion).

Other

MeasureTime frameDescription
exercise complianceimmediately after each exercise session, through 8 weeksparticipation status of all exercise session (%)

Countries

Turkey (Türkiye)

Contacts

Primary ContactEzgi Unuvar-Yuksel
unuvarezgi@gmail.com+905078337676
Backup ContactÖzlem Ulger, proffesor
ozlemulger@yahoo.com+903123051576

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026