Hip InjuryNCT07525154
Development of a Certified Testing Procedure for Hip and Groin Injuries in Athletes
A study testing Strength-focused and Flexibility-focused in people with Hip Injury, run by Charles University, Czech Republic.
Trial summary
Hip and groin injuries affect approximately 21% of professional athletes annually, causing significant time loss. As roughly 48% of these cases result from non-contact mechanisms, they are potentially preventable through optimized diagnostic screening. Read more about this study
- Who is it for?
- Ages 14 to 20 yearsHealthy volunteers can take part
- Conditions the study is for
- Hip Injury
- What is being tested?
- Strength-focused and Flexibility-focused
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 170 participants
- Where
- No sites listed yet
- Study dates
- 1 Jan 2027to 31 Dec 2031
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 20 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Male or female competitive team sports.
- Registered members of participating team sports.
- Age 14 to 20 years.
- Participation in regular team training and competition during the study period.
- Medically cleared for full participation in training and match play at study entry.
- Willing and able to complete preseason testing and the assigned intervention program.
- Provided written informed consent. For participants younger than 18 years, parent or legal guardian consent will also be obtained.
Who cannot join
- Current hip or groin injury causing time loss or restricting full participation in training or competition at baseline.
- Lower extremity or lumbar spine injury at baseline that limits safe participation in testing or intervention exercises.
- Surgery involving the hip, groin, pelvis, lumbar spine, or lower extremity within the previous 6 months.
- Any neurological, musculoskeletal, cardiovascular, or other medical condition that would contraindicate participation in the intervention or testing procedures.
- Inability to complete baseline assessments.
- Planned absence during a substantial part of the preseason intervention period or competitive season.
- Noncompliance with study procedures or refusal to provide consent.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Development Of A Certified Testing Procedure For Hip And Groin Injuries In Athletes
Hip and groin injuries affect approximately 21% of professional athletes annually, causing significant time loss. As roughly 48% of these cases result from non-contact mechanisms, they are potentially preventable through optimized diagnostic screening. Evidence strongly links restricted hip range of motion (ROM) and strength deficits to an increased injury risk. This project aims to (1) develop a rigorously validated diagnostic testing procedure by comparing different joint positions, movement velocities, and muscle contractions to establish a preventive "gold standard" screening battery. dditionally, (2) pilot targeted prevention interventions over a competitive season. Using a crossover design, the research evaluates three protocols: Strength-focused,Flexibility-focused:and control group. (3) Implement of a Centralized Injury Reporting System. Combining comprehensive diagnostic screening with these practical interventions will yield a powerful tool for clinicians and coaches to effectively reduce the incidence and burden of non-contact hip and groin injuries
- Conditions
- Hip Injury
- Being tested
- Strength-focused, Flexibility-focused
- Medical subject headings
- Hip Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Strength-focusedOther
Emphasizing specific joint stabilization and eccentric load tolerance, heavily utilizing the Copenhagen Adductor Exercise.
Flexibility-focusedOther
Targeting functional hip ROM through stretching and dynamic mobility under load.
| Study group | Role | What they receive |
|---|---|---|
| Strength-focused | Experimental | Emphasizing specific joint stabilization and eccentric load tolerance, heavily utilizing the Copenhagen Adductor Exercise. Receives: Other: Strength-focused |
| Flexibility-focused: | Experimental | Targeting functional hip ROM through stretching and dynamic mobility under load. Receives: Other: Flexibility-focused |
| Control | No intervention | Maintaining standard club warm-up and training regimens. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Hip and Groin Injury Incidence During the Competitive Season
The number of new hip and groin injuries occurring during the monitored competitive season among athletes participating in the different preseason intervention programs. Injury incidence will be recorded by team medical staff and expressed as the number of injuries per 1000 athlete-exposures.
Measured: Through the competitive season, up to 9 months
Secondary outcomes (6)
Hip and Groin Injury Severity
Severity of hip and groin injuries assessed as the number of days lost from training or competition following injury.
Measured: Through the competitive season, up to 9 months
Hip and Groin Injury Burden
Overall injury burden calculated as the product of injury incidence and injury severity across the study period.
Measured: Through the competitive season, up to 9 months
Change in Hip Range of Motion (ROM)
Passive hip range of motion assessed using standardized clinical ROM testing (Bent Knee Fall-Out test and passive hip flexion/abduction assessments) with a digital inclinometer.
Measured: Baseline (Day 1, preseason screening) and 8 weeks (end of preseason intervention)
Functional Lower Limb Performance
Functional performance of the lower extremity assessed through a standardized testing battery evaluating strength, mobility, and sport-specific functional performance.
Measured: Baseline (preseason) and post-intervention (end of preseason)
Hip Adduction and Abduction Strength
Hip adduction and abduction peak torque measured using isokinetic dynamometry (Humac Norm or Biodex system) during concentric and eccentric contractions at standardized angular velocities (30°/s, 120°/s).
Measured: Baseline (Day 1, preseason screening) and 8 weeks (end of preseason intervention)
Isometric Hip Strength
Isometric hip adduction strength measured using hand-held dynamometry (HHD) squeeze tests and fixed dynamometry systems such as ForceFrame/GroinBar at joint angles of 0°, 25°, and 50° hip abduction.
Measured: Baseline (Day 1, preseason screening) and 8 weeks (end of preseason intervention)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Apr 2026
- Study start1 Jan 2027 (estimated)
- Primary completion31 Dec 2031 (estimated)
- Study completion31 Dec 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hip InjuryStudies of the same condition, open and under way.
- More trials run by Charles University, Czech RepublicThe 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
- Crossover
- Masking
- None (open label)
- Enrolment
- 170 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Charles University, Czech Republic
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Anna Pisz, Charles University, Czech Republic
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07525154
- Sponsor's protocol ID
- PRIMUS008
- Status last verified
- Apr 2026
- First submitted
- 30 Mar 2026
- Last updated
- 13 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Development Of A Certified Testing Procedure For Hip And Groin Injuries In Athletes
- ClinicalTrials.gov ID
- NCT07525154
- Acronym / sponsor ID
- PRIMUS008
- Conditions
- Hip Injury
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 170 participants (estimated)
- Lead sponsor
- Charles University, Czech RepublicUniversity, hospital or other
- Study start
- 1 Jan 2027 (estimated)
- Primary completion
- 31 Dec 2031 (estimated)
- Study completion
- 31 Dec 2031 (estimated)
- First posted
- 13 Apr 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.
Hip and groin injuries affect approximately 21% of professional athletes annually, causing significant time loss. As roughly 48% of these cases result from non-contact mechanisms, they are potentially preventable through optimized diagnostic screening. Evidence strongly links restricted hip range of motion (ROM) and strength deficits to an increased injury risk. This project aims to (1) develop a rigorously validated diagnostic testing procedure by comparing different joint positions, movement velocities, and muscle contractions to establish a preventive "gold standard" screening battery. dditionally, (2) pilot targeted prevention interventions over a competitive season. Using a crossover design, the research evaluates three protocols: Strength-focused,Flexibility-focused:and control group. (3) Implement of a Centralized Injury Reporting System. Combining comprehensive diagnostic screening with these practical interventions will yield a powerful tool for clinicians and coaches to effectively reduce the incidence and burden of non-contact hip and groin injuries
Study design
- Primary purpose
- Screening
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Strength-focused | Experimental | Other: Strength-focusedEmphasizing specific joint stabilization and eccentric load tolerance, heavily utilizing the Copenhagen Adductor Exercise. |
| Flexibility-focused: | Experimental | Other: Flexibility-focusedTargeting functional hip ROM through stretching and dynamic mobility under load. |
| Control | No intervention | –Maintaining standard club warm-up and training regimens. |
Who may qualify
- Ages
- 14 to 20 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (7 listed)
- Male or female competitive team sports.
- Registered members of participating team sports.
- Age 14 to 20 years.
- Participation in regular team training and competition during the study period.
- Medically cleared for full participation in training and match play at study entry.
Key exclusion criteria (7 listed)
- Current hip or groin injury causing time loss or restricting full participation in training or competition at baseline.
- Lower extremity or lumbar spine injury at baseline that limits safe participation in testing or intervention exercises.
- Surgery involving the hip, groin, pelvis, lumbar spine, or lower extremity within the previous 6 months.
- Any neurological, musculoskeletal, cardiovascular, or other medical condition that would contraindicate participation in the intervention or testing procedures.
- Inability to complete baseline assessments.
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 |
|---|---|---|
| Strength-focusedEmphasizing specific joint stabilization and eccentric load tolerance, heavily utilizing the Copenhagen Adductor Exercise. | Other | Strength-focused |
| Flexibility-focusedTargeting functional hip ROM through stretching and dynamic mobility under load. | Other | Flexibility-focused: |
Primary outcome
Hip and Groin Injury Incidence During the Competitive Season
Time frame: Through the competitive season, up to 9 months
The number of new hip and groin injuries occurring during the monitored competitive season among athletes participating in the different preseason intervention programs. Injury incidence will be recorded by team medical staff and expressed as the number of injuries per 1000 athlete-exposures.
6 secondary outcomes
Hip and Groin Injury Severity
Time frame: Through the competitive season, up to 9 months
Hip and Groin Injury Burden
Time frame: Through the competitive season, up to 9 months
Change in Hip Range of Motion (ROM)
Time frame: Baseline (Day 1, preseason screening) and 8 weeks (end of preseason intervention)
Functional Lower Limb Performance
Time frame: Baseline (preseason) and post-intervention (end of preseason)
Hip Adduction and Abduction Strength
Time frame: Baseline (Day 1, preseason screening) and 8 weeks (end of preseason intervention)
Isometric Hip Strength
Time frame: Baseline (Day 1, preseason screening) and 8 weeks (end of preseason intervention)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Apr 2026.
- Individual participant dataSharing planned: No
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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.
Questions about this trial
What is this clinical trial studying?
A study testing Strength-focused and Flexibility-focused in people with Hip Injury, run by Charles University, Czech Republic.
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 7 inclusion and 7 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: opening soon, as of the sponsor's last update on 13 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Anna Pisz, PT, PhD (+420703952913, anna.pisz@ftvs.cuni.cz), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Hip and Groin Injury Incidence During the Competitive Season (time frame: Through the competitive season, up to 9 months). 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 13 Apr 2026.