New breathing test studied in spine arthritis patients
NCT ID NCT07515131
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at chest expansion, lung function, and a new measure of breathing muscle strength called the S-index in 52 people with radiographic axial spondyloarthritis and healthy controls. The goal was to see if these measures differ between the two groups and if the S-index could be useful for assessing lung health in this condition. The study is complete and did not test any treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could show that the S-index is a useful new way to monitor breathing muscle strength in people with axial spondyloarthritis.
- What could go wrong
- This is a small, observational study with only 52 participants. It does not test any treatment, so it cannot directly improve patient care.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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52 people
The number who actually took part.
- Started
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Jan 2025
- Finished
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Oct 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The study population consisted of patients diagnosed with radiographic axial spondyloarthritis who were followed at the Department of Physical Medicine and Rehabilitation at Gazi University, and healthy volunteers recruited from the same institution.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Willingness to participate in the study and provide informed consent * Age ≥18 years * Absence of any known chronic disease (for the healthy control group) * Diagnosis of radiographic axial spondyloarthritis according to the Assessment of SpondyloArthritis international Society (ASAS) criteria and absence of any additional chronic disease (for the r-axSpA group) Exclusion Criteria: * Presence of known cardiopulmonary disease * Presence of any rheumatologic disease other than radiographic axial spondyloarthritis (r-axSpA) * Inability to cooperate with testing procedures * Presence of chest wall or spinal deformities that may restrict lung capacity (e.g., pectus carinatum, pectus excavatum, scoliosis) * Professional athletes
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Gazi University Hospital, Department of Physical Medicine and Rehabilitation
Ankara, 06560, Turkey (Türkiye)
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