An interventional study of Progressive resistance training and Waiting time in External Snapping Hip and Coxa Saltans External, sponsored by Aarhus University Hospital. Recruiting at 13 sites in Denmark. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2026-10-07.
Sponsored by Aarhus University Hospital · Not applicable, Interventional, and Treatment
Among 286 studies in Motor Activity with a site in Denmark — 52 open to participants now, 66 under way, none of them phase 3. Motor Activity · Denmark.
Among the 286 studies in Motor Activity with a site in Denmark, this one is the 89th largest by planned enrollment of the 234 interventional ones, is one of 14 that started in 2025, is one of 200 with no phase, reaches primary completion later than 38 of the 65 other live ones, and was the 258th registered.
9,798 studies on the registry are indexed under Motor Activity; 1,910 are open to participants now.
This study's planned enrollment of 100 is above the median of 60 across 8,388 interventional studies indexed under Motor Activity.
Browse Motor Activity studies →52 of the 286 studies in Motor Activity with a site in Denmark are open now, in 12 countries. Each count lists the studies.
Of the 1,201 Motor Activity studies recruiting now, 517 (43%) set no upper age limit and 535 (45%) stop at 75 or younger; 180 take children under 18; 420 take healthy volunteers.
This study: 18 Years to 40 Years · all sexes · no healthy volunteers.
The full table on the hub →286 studies; the count open now beside each. This study's row is marked.
First in 1983; this study’s year is marked. 14 started in 2025.
Median enrollment 67 across the 234 interventional studies, 117 across the 52 observational. Of the 179 that completed or were terminated, 5 (3%) have results posted.
5 of 286 have an industry lead sponsor. The 10 most frequent:
Aarhus University Hospital is the lead sponsor of 298 studies on the registry; 80 are open to participants now.
Aarhus University Hospital has 3 studies filed under Motor Activity — fewer than ten, so there is no comparison to draw.
22 of the studies in Motor Activity with a site in Denmark that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07378735Rigshospitalet, DenmarkBack to Life - Early Rehabilitation Therapy for Patients Undergoing Lumbar Spinal Fusion | 2026-11 |
| NCT07341438Julie MidtgaardPhysical Activity in the Management of Personality Disorders | 2026-11-01 |
| NCT06418217Jeppe LangeExercise and Patient Education for Patients With Lateral Hip Pain | 2026-11-01 |
| NCT06776003Spine Centre of Southern DenmarkContinuous Mobility and Physical Activity in Vertebroplasty vs Sham for Osteoporotic Vertebral Fracture | 2026-12 |
| NCT04672681Rigshospitalet, DenmarkRehabilitation Including Structured Active Play for Preschoolers With Cancer. | 2026-12-30 |
Among the 286 studies in Motor Activity with a site in Denmark, from their registry updates:
External snapping hip is characterised by an audible and painful snap during hip movement among physical active people around 15-40 years old. Progressive resistance training has been suggested as a new potential treatment path in treating patients with external snapping hip. The investigators conducted a feasibility study and found that patients reported less pain and improved their physical function, quality of life and muscle strength after 12 weeks of progressive resistance training. The overall aim of the project is to compare hip pain in patients with external snapping hip treated with progressive resistance training to a wait-and-see approach, in a randomised controlled trial. This study has the potential to establish a new and specific treatment option for patients with external snapping hip, to be used nationally and internationally.
This trial is an international multicentre randomised controlled trial, following the CONSORT guidelines. The intervention is a 12-week progressive resistance training programme, and the trial is designed with three follow-up time points. After the baseline test, the patients will be randomised in a 1:1 ratio to either the intervention or the control group using the Research Electronic Data Capture (REDCap) source hosted at Aarhus University. For both groups, the first test will be the baseline test, conducted before the randomisation. The second test will be conducted 6 weeks after randomisation, the third test will be conducted 12 weeks after randomisation and the fourth and last test will be conducted 24 weeks after randomisation. The primary outcome will be the change from baseline to the third follow-up, and the trial will be powered based on this period. The lasting effect of the intervention will be evaluated from baseline to the fourth follow-up test for the intervention group.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The control group are randomized to 12 weeks of waiting time followed by 12 weeks of progressive resistance training.
Other: Progressive resistance training · Behavioral: Waiting time
The intervention group are randomized to 12 weeks of progressive resistance training followed by 12 weeks of self guided exercise
Other: Progressive resistance training · Behavioral: Self guided exercise
The progressive resistance program consist of a five-minute aerobic warm-up on either an ergometer bike, treadmill or rowing machine followed by six resistance training exercises: landmine twist, walking lunges, leg press, hip abduction, hip adduction and hip flexion. All training sessions (three per week) will be supervised for the first two weeks. After that, there will be one weekly supervised training session and two self-directed sessions. The subjects will be scheduled for 36 training sessions over 12 weeks, of which 16 will be supervised. Each training session is designed based on the findings from the feasibility study and is expected to last approximately one hour. If a subject cannot perform all scheduled sessions in a week, additional sessions will be planned for the following week to obtain the 16 supervised sessions.
Also known as: Exercise therapy
12 weeks of waiting time
Also known as: Waitlist, Wait
12 weeks of self guided exercise
Also known as: Wait, Self training
HAGOS Pain
The HAGOS is a patient-reported questionnaire consisting of six different subscales. The pain subscale consists of 10 questions, which are all answered using standardised answer options following a 0-4-point Likert Scale. The scores are transformed into a subscale score ranging from 0 (worst) to 100 (best). A minimal clinically relevant difference of the HAGOS pain subscale has been reported to be 9.7 points among a group of patients undergoing hip arthroscopy for femoroacetabular impingement.
Time frame: Baseline, week 6, week 12 and week 24
HAGOS
The remaining five subscales of HAGOS: symptoms, function in daily living (ADL), function in sport and recreation (Sports/Rec), participation in physical activities (PA) and hip and/or groin-related quality of life (QOL). The scores are transformed into a subscale score ranging from 0 (worst) to 100 (best).
Time frame: Baseline, week 6, week 12 and week 24
UCLA-AS
The patient-reported questionnaire: the University of California Los Angeles Activity Scale. There is only one question with 10 answers, ranging from 1 (worst) to 10 (best).
Time frame: Baseline, week 12 and week 24
GPE
The patient-reported questionnaire: the Global Perceived Effect, where the participant answers four questions about the effect of the treatment received. Each question has 7 possible answers, ranging from 1 (best) to 7 (worst).
Time frame: Baseline, week 12 and week 24
Single leg hop test
The objective measures include the single-leg hop for a distance test to test hip function. The hop distance is measured in cm.
Time frame: Baseline, week 12 and week 24
30 second unilateral sit-to-stand test
The unilateral 30 second Sit to Stand test (unilateral 30STS) is a clinical test of lower extremity function. The unilateral 30STS tests how many correct repetitions of a sit to stand from a chair, a participant can complete in 30 seconds.
Time frame: Baseline, week 12 and week 24
Number of training sessions the participant participated in
Adherence to the exercise protocol will be evaluated based on information from the physiotherapists and a self-reported training diary. Good adherence will be defined as participation in more than ≥70% of all training sessions (both supervised and self-training).
Time frame: Throughout the study, summed in week 24
Adverse events
The physiotherapist will record any adverse events occurring during the study period.
Time frame: Throughout the study, summed in week 24
EQ-5D-5L
The patient-reported questionnaire: the European Quality of life 5 Dimensions with 5 Levels (EQ-5D-5L) where the participant answers six questions in relation to health-related quality of life
Time frame: Baseline, week 12 and week 24
iPCQ
The patient-reported questionnaire: the Productivity Costs Questionnaire, where information on productivity is collected .
Time frame: Baseline, week 12 and week 24
HUQ
Health Utilisation Questionnaire (HUQ) where information on healthcare and medicine is collected.
Time frame: Baseline, week 12 and week 24
Usage of analgesics due to hip-related pain
The participants will be asked if they take any analgesics due to hip-related pain. If yes, they will be further asked what type of medicine (Paracetamol/NSAID/Morfin/Other) and how often (Never/Monthly/Weekly/Daily).
Time frame: Baseline, week 12 and week 24
PDFs hosted by the registry, ClinicalTrials.gov.
Plan to share: Yes — Anonymized patient-level data will be made available if required by the scientific journal, in which the results of the trial are published. Additionally, researchers presenting a justified cause for receiving the data can obtain it after a data access agreement has been signed.
Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Analytic code
Time frame: Data will be available after publication of the trial upon reasonably request.
Access criteria: Applications for data access will be reviewed by the author group. The applicant will be required to sign a data access agreement.
Started Jul 2025 (actual). Primary completion is estimated for Apr 2027, 21 months after the start.
Of 5,147 non-industry interventional studies with no phase under Motor Activity, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 36. This study's planned 21 months is above that.
Counting every sponsor, half of 5,207 studies reached it within 17 months; a quarter within 7 and three quarters within 36.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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