Test-Retest Reliability of a Submaximal Exercise Test in Patients With Hip and Knee Osteoarthritis

February 3, 2026 updated by: Vastra Gotaland Region

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.

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 Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Currently listed on the waiting list for an osteoarthritis rehabilitation program due to clinically diagnosed hip and/or knee osteoarthritis.

Exclusion Criteria:

  • 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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Forty patients with osteoarthritis in hip or knee
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.
Procedure: Submaximal cycle ergometer test-retest
Performing a submaximal cycle ergometer test twice

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
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.
Time between first and second submaximal cycle ergometer test should be one week.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Vastra Gotaland Region

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

March 1, 2026

Primary Completion (Estimated)

September 1, 2027

Study Completion (Estimated)

October 1, 2027

Study Registration Dates

First Submitted

January 19, 2026

First Submitted That Met QC Criteria

January 26, 2026

First Posted (Actual)

February 3, 2026

Study Record Updates

Last Update Posted (Actual)

February 6, 2026

Last Update Submitted That Met QC Criteria

February 3, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Test-retest_adapted_EB

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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