Osteo Arthritis Knee and HipNCT07383740
Test-Retest Reliability of a Submaximal Exercise Test in Patients With Hip and Knee Osteoarthritis
A study testing Submaximal cycle ergometer test-retest in people with Osteo Arthritis Knee and Hip, run by Vastra Gotaland Region at 1 site in Sweden.
Trial summary
The aim is to evaluate the test-retest reliability of the primary care-adapted Ekblom-Bak submaximal ergometer bicycle test in patients with hip- and/or knee osteoarthritis (OA). Forty patients with hip- and/or knee OA eligible for the Swedish national OA treatment program in primary care are to be recruited. Read more about this study
- Who is it for?
- Ages 30 years and older
- Conditions the study is for
- Osteo Arthritis Knee and Hip
- What is being tested?
- Submaximal cycle ergometer test-retest
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteSweden
- Study dates
- 21 Apr 2026to 1 Oct 2027
- 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 30 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Currently listed on the waiting list for an osteoarthritis rehabilitation program due to clinically diagnosed hip and/or knee osteoarthritis.
Who cannot join
- Another primary cause of symptoms or disability, such as inflammatory joint disease or fracture.
- Another condition currently causing more symptoms than osteoarthritis, for example fibromyalgia.
- Insufficient understanding of written and spoken Swedish.
- Medication that affects heart rate.
- Contraindications for a submaximal ergometer bicycle test according to the screening protocol, such as heart disease.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Sweden1 site, 1 recruiting
- Recruiting
Närhälsan Gibraltar Rehab
Gothenburg
Daniel Karsberg Zotterman, +46702273688, daniel.karsberg.zotterman@vgregion.se
About this study
Official title: Test-Retest Reliability of a Submaximal Exercise Test in Patients With Hip- and/or Knee Osteoarthritis
The aim is to evaluate the test-retest reliability of the primary care-adapted Ekblom-Bak submaximal ergometer bicycle test in patients with hip- and/or knee osteoarthritis (OA).
Forty patients with hip- and/or knee OA eligible for the Swedish national OA treatment program in primary care are to be recruited. After screening for contraindications, participants will perform the aEB-test twice within 1-2 weeks.
Read more
The investigators hypothezise that the test will demonstrate acceptable test-retest reliability in patients with hip- and/or knee OA.
To establish reliability is essential for future studies using this test in this population and may support its integration into routine clinical assessment.
- Conditions
- Osteo Arthritis Knee and Hip
- Being tested
- Submaximal cycle ergometer test-retest
- Keywords
- Osteoarthritis, knee osteoarthritis, hip osteoarthritis, exercise test, reliability, cardiorespiratory fitness, test-retest
- Medical subject headings
- Osteoarthritis, Osteoarthritis, Knee, Osteoarthritis, Hip
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Submaximal cycle ergometer test-retestProcedure or surgery
Performing a submaximal cycle ergometer test twice
| Study group | Role | What they receive |
|---|---|---|
| Forty patients with osteoarthritis in hip or knee | Experimental | Forty patients with hip or knee osteoarthritis on the waiting list for usual rehabilitation care will be recruited. The patientes will be screened for contraindications, and, if eligible, will complete a submaximal cycle ergometer test twice within one week. Receives: Procedure: Submaximal cycle ergometer test-retest |
What is being measured
The primary outcome is the main question the study is designed to answer.
Estimated VO2-max value.
An estimated VO2-max value is obtained by performing the Ekblom Bak submaximal cycle ergometer test.
Measured: Time between first and second submaximal cycle ergometer test should be one week.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Feb 2026
- Study start21 Apr 2026
- Primary completion1 Sep 2027 (estimated)
- Study completion1 Oct 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Osteo Arthritis Knee and HipStudies of the same condition, open and under way.
- More trials run by Vastra Gotaland RegionThe 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
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- Test-retest reliability of a submaximal cycle ergometer test.
- Masking
- None (open label)
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Vastra Gotaland Region
- Sponsor type
- Other government
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07383740
- Sponsor's protocol ID
- Test-retest_adapted_EB
- Status last verified
- Jan 2026
- First submitted
- 19 Jan 2026
- Last updated
- 20 Aug 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 20 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Test-Retest Reliability of a Submaximal Exercise Test in Patients With Hip- and/or Knee Osteoarthritis
- ClinicalTrials.gov ID
- NCT07383740
- Acronym / sponsor ID
- Test-retest_adapted_EB
- Conditions
- Osteo Arthritis Knee and Hip
- Keywords
- Osteoarthritis, knee osteoarthritis, hip osteoarthritis, exercise test, reliability, cardiorespiratory fitness, test-retest
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Vastra Gotaland RegionOther government
- Study start
- 21 Apr 2026 (actual)
- Primary completion
- 1 Sep 2027 (estimated)
- Study completion
- 1 Oct 2027 (estimated)
- First posted
- 3 Feb 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.
The aim is to evaluate the test-retest reliability of the primary care-adapted Ekblom-Bak submaximal ergometer bicycle test in patients with hip- and/or knee osteoarthritis (OA).
Forty patients with hip- and/or knee OA eligible for the Swedish national OA treatment program in primary care are to be recruited. After screening for contraindications, participants will perform the aEB-test twice within 1-2 weeks.
The investigators hypothezise that the test will demonstrate acceptable test-retest reliability in patients with hip- and/or knee OA.
To establish reliability is essential for future studies using this test in this population and may support its integration into routine clinical assessment.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- Test-retest reliability of a submaximal cycle ergometer test.
| Arm | Type | Receives |
|---|---|---|
| Forty patients with osteoarthritis in hip or knee | Experimental | Procedure: Submaximal cycle ergometer test-retestForty patients with hip or knee osteoarthritis on the waiting list for usual rehabilitation care will be recruited. The patientes will be screened for contraindications, and, if eligible, will complete a submaximal cycle ergometer test twice within one week. |
Who may qualify
- Ages
- 30 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Currently listed on the waiting list for an osteoarthritis rehabilitation program due to clinically diagnosed hip and/or knee osteoarthritis.
Key exclusion criteria (5 listed)
- Another primary cause of symptoms or disability, such as inflammatory joint disease or fracture.
- Another condition currently causing more symptoms than osteoarthritis, for example fibromyalgia.
- Insufficient understanding of written and spoken Swedish.
- Medication that affects heart rate.
- Contraindications for a submaximal ergometer bicycle test according to the screening protocol, such as heart disease.
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 |
|---|---|---|
| Submaximal cycle ergometer test-retestPerforming a submaximal cycle ergometer test twice | Procedure or surgery | Forty patients with osteoarthritis in hip or knee |
Primary outcome
Estimated VO2-max value.
Time frame: Time between first and second submaximal cycle ergometer test should be one week.
An estimated VO2-max value is obtained by performing the Ekblom Bak submaximal cycle ergometer test.
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 20 Aug 2026.
- Related InfoLink provided by the sponsor.
- 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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Submaximal cycle ergometer test-retest in people with Osteo Arthritis Knee and Hip, run by Vastra Gotaland Region at 1 site in Sweden.
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 1 inclusion and 5 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: looking for participants now, as of the sponsor's last update on 20 Aug 2026. 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 Sweden. 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?
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 Daniel Karsberg Zotterman, MSc (+46739298119, daniel.karsberg.zotterman@vgregion.se), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Estimated VO2-max value. (time frame: Time between first and second submaximal cycle ergometer test should be one week.). 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 20 Aug 2026.