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Active, not recruitingNCT06277401HIPEr-KneeUpdated Sep 10, 2026

Exercise in Patients With Hypermobile Joints and Knee Pain

An interventional study of Neuromuscular training for the knee and High-load strength training for the knee in Hypermobility, Joint, Hypermobility Syndrome and Knee Discomfort, sponsored by University of Southern Denmark. Active, not recruiting at 2 sites in Denmark. Open to participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2026-09-10.

Sponsored by University of Southern Denmark · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

Pain associated with knee joint hypermobility is common in the adult population, but evidence on treatment is sparse. This study investigates if high-load resistance training is superior to usual care in improving activity-related pain in young patients (18-45 years) with hypermobile joints and knee pain.

Read the detailed description

Knee joint hypermobility is common in the adult population. Patients with knee joint hypermobility and knee pain are typically managed with low intensity resistance training and proprioceptive training to reduce knee pain and improve function, but many patients do not respond well to these treatment strategies. High-load resistance training offers additional benefits to low intensity resistance training, including marked increase in muscle cross-sectional area, neural drive, and increased tendon stiffness, all important components of acquiring active knee joint stability during movement tasks and daily life. Therefore, the primary aim of this randomised controlled trial (RCT) is to investigate if high-load resistance training is superior to usual care in reducing activity-related pain in young patients (18-45 years) with hypermobile joints and knee pain.

02

Conditions studied

  • Hypermobility, Joint
  • Hypermobility Syndrome
  • Knee Discomfort

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Keywords

  • Hypermobility
  • Knee pain
  • Treatment
  • Randomised controlled trial
03

In context

Joint Instability

115 studies on the registry are indexed under Joint Instability; 21 are open to participants now.

This study's enrollment of 80 is above the median of 46 across 58 interventional studies indexed under Joint Instability.

Browse Joint Instability studies →

Lead sponsor

University of Southern Denmark is the lead sponsor of 336 studies on the registry; 46 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  • Persistent knee pain for ≥ 3 months (self-reported)
  • Knee pain ≥ 30mm during the last week using a 0-100 mm visual analogue scale (VAS; 0=no pain and 100=worst imaginable pain) (self-reported)
  • Generalised joint hypermobility assessed with the Five-Part Hypermobility Questionnaire (positive ≥ 2/5) (self-reported)
  • Local knee joint hypermobility using the passive hyperextension of the knee in standing (positive > 10 degrees of hyperextension) and confirmed in supine lying (heel resting on 20 cm high block on the bench surface), with passive knee hyperextension (positive > 10 degrees) (objectively measured)

Exclusion criteria

Exclusion criteria

  • Diagnosed with patellar tendinopathy
  • Pregnancy or childbirth within the past year (due to increased levels of relaxin that could affect joint stability)
  • Knee surgery within the past year
  • Participation in regular structured resistance training within the past six months
  • Inability to speak and understand Danish.
  • All types of Ehlers-Danlos syndrome
  • Other heritable connective tissue disorders such as Marfan syndrome, osteogenesis imperfecta, Loeys-Dietz syndrome, Stickler syndrome, skeletal dysplasias
  • rheumatic connective tissue disorders such as lupus, rheumatoid arthritis; Chromosomal conditions such as Fragile X syndrome, Kabuki syndrome, Down syndrome
  • Neuromuscular disorders that can cause joints to become unstable, such as multiple sclerosis
Terms in these criteria, in plain language(1)

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.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
80 participants (actual)

Study arms

  • Experimental
    Intervention

    Progressive high-load resistance training program performed twice weekly for 12 weeks

    Other: High-load strength training for the knee

  • Active comparator
    Standard care

    The standard care group will receive instructions on a neuromuscular training program with focus on knee stability and function performed at low intensities to be conducted twice weekly for 12 weeks

    Other: Neuromuscular training for the knee

Interventions

  • OtherNeuromuscular training for the knee

    The exercise programme includes exercises identified in literature to target muscles around the knee.

  • OtherHigh-load strength training for the knee

    The exercise programme includes exercises identified in literature to target muscles around the knee.

06

What researchers measure

Primary outcomes

  1. Visual Analogue Scale Nominated Activity

    The primary outcome is the Self-reported knee pain during an activity nominated by patients to be the most aggravating for their present knee pain (VAS nominated activity - VASNA, 0-100, 100 = worse). The primary endpoint is at 12-week follow-up.

    Time frame: Baseline, 6 weeks, 12 weeks (primary endpoint), 12 months

Secondary outcomes

  1. Knee injury and Osteoarthritis Outcome Score (KOOS)

    Knee injury and Osteoarthritis Outcome Score is a validated knee-specific questionnaire used to assess patient-reported outcomes in the continuum from knee injury to osteoarthritis and is widely used for different types of knee pathology. (0-100, 100 = best)

    Time frame: Baseline, 12 weeks, 12 months

  2. Adverse events

    Adverse events will be defined as any unintended, negative findings, symptom, or illnesses that occur during the study assessments or interventions, whether attributable to the project or not.

    Time frame: Up to 12 months

  3. Dynamic knee strength

    Dynamic leg strength will be established by a 5-repetition maximum leg press (single leg) by a standardised protocol.

    Time frame: Baseline, 12 weeks

  4. Knee reposition sense

    Sitting active knee joint reposition (proprioception) test will be performed using a HALO Digital Goniometer, to assess mean absolute angle error (AAE)

    Time frame: Baseline, 12 weeks

  5. Single-Leg-Hop for Distance

    The patients will be instructed to hop forward as far as possible and land steadily and stand still for at least three seconds.

    Time frame: Baseline, 12 weeks

Other outcomes

  1. Knee pain past week

    Knee pain for the past week is measured using the Visual Analogue Scale (0-100, 100 = worse)

    Time frame: Baseline, 6 weeks, 12 weeks, 12 months

  2. Tampa scale of Kinesiophobia (TSK) 11 item

    Tampa scale of Kinesiophobia is used to measure impression of change in fear of movement from baseline to 16 weeks follow-up. It consists of an 11-item scale where each question is scored on a 4 point Likert scale, with 1 indicating, "strongly disagree" and 4 indicating, "strongly agree". The total scores range from 11-44, with higher scores representing increased fear of movement.

    Time frame: Baseline, 12 weeks, 12 months

  3. EQ-5D-5L

    the European Quality of life-5 Dimensions-5-Level measures change in health related quality of life and includes the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The EQ-5D descriptive system comprises five dimensions (mobility, Self-care, usual activities, pain/discomfort and anxiety/depression). Each dimension is rated using a five-level ordinal scale from no problems to extreme problems. It results in a preference based index that range from states worse than death (\<0), to 1 (full health), anchoring dead at 0. A score of one indicates that the participants perceived their health at the best possible state and a score below null that the participants perceived their health worse than death.

    Time frame: Baseline, 12 weeks, 12 months

  4. EQ VAS

    the European Quality of life-5 Dimensions-5-Level measures change in health related quality of life and includes the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The EQ VAS measures change in health related quality of life. It includes a visual analogue scale where own health 'today´ is rated on a scale from 0 (worst imaginable health) to 100 (best imaginable health).

    Time frame: Baseline, 12 weeks, 12 months

  5. Global perceived effect (GPE)

    To measure the patients self-rated impression of improvement at follow-up the GPE will be used related to knee problems. GPE measures self-rated impression of improvement since baseline assessment on a 7-point scale (1 "worse, an important worsening" to 7 "better, an important improvement)

    Time frame: 12 weeks, 12 months

  6. PASS

    Patient Acceptable Symptom State "When you think of your knee function, will you consider your current condition as satisfying? By knee function, you should take into account your activities of daily living, sport and recreational activities, your pain and other symptoms and your quality of life". Answered by "yes" or "no".

    Time frame: 12 weeks, 12 months

  7. TF

    Treatment Failure Only answered by patients answering "no" to PASS. "Would you consider your current state as being so unsatisfactory that you consider the treatment to have failed?". Answered by "yes" or "no".

    Time frame: 12 weeks, 12 months

  8. Clinical important difference

    American College of Rheumatology response criteria 20% and 50%

    Time frame: 12 weeks, 12 months

  9. Knee instability questions

    Within the last month, have you experienced that your knee was unstable or about to give out? To what extent has the experience of your knee feeling unstable or giving out affected your daily activity level within the last month?

    Time frame: Baseline, 12 weeks, 12 months

  10. Tendon stiffness

    Stiffness of the patellar tendon is assessed based on corresponding values of tendon force and tendon deformation (measured by use of B-mode ultrasonography). Subgroup of patients (n = 30)

    Time frame: Baseline, 12 weeks

  11. Quadriceps rate of torque development (RTD)

    Rate of torque development in the quadriceps muscle. Subgroup of patients (n = 30)

    Time frame: Baseline, 12 weeks

  12. Patella instability

    Moving patellar apprehension test will be used to assess patella instability. Subgroup of patients (n = 30)

    Time frame: Baseline, 12 weeks

  13. Quadriceps maximal voluntary isometric contraction

    Isometric maximal voluntary contraction in the quadriceps muscle. Subgroup of patients (n = 30)

    Time frame: Baseline, 12 weeks

07

Study locations

2 sites
08

References and documents

Publications

  • Liaghat B, Bojsen-Moller J, Juul-Kristensen B, Henriksen P, Mohammadnejad A, Heiberg BD, Thorlund JB. High-load strength training compared with standard care treatment in young adults with joint hypermobility and knee pain: study protocol for a randomised controlled trial (the HIPEr-Knee study). BMJ Open. 2024 Oct 16;14(10):e090812. doi: 10.1136/bmjopen-2024-090812. PubMed 39414294 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06277401
Collaborators
Independent Research Fund Denmark, Odense Patient Data Explorative Network
Responsible party
Behnam Liaghat (Assistant Professor, University of Southern Denmark) — Principal investigator
First posted
Feb 26, 2024
Start date
Feb 21, 2024
Primary completion
Sep 2026 (estimated)
Completion
May 2027 (estimated)
Last update
Sep 10, 2026

Study contacts

Behnam Liaghat, PhD
principal investigator · University of Southern Denmark
Jonas B Thorlund, PhD
study director · University of Southern Denmark

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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