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New study aims to predict breathing muscle strength without fancy gear

NCT ID NCT07598292

Knowledge-focused Sponsor: Hitit University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed observational study included 123 adults with COPD or asthma. Researchers measured breathing muscle strength using a special device and then tried to predict those results from simpler tests like spirometry and body composition. The goal was to see if doctors could estimate muscle strength without needing expensive equipment.

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 could help doctors estimate breathing muscle strength in COPD and asthma patients without needing special devices.
What could go wrong
This is an observational study, not a treatment trial. The prediction models may not be accurate enough for routine use and need further validation.

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

123 people

The number who actually took part.

Started

Feb 2026

Finished

Mar 2026

Lead sponsor

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 adult male patients with a clinical diagnosis of chronic obstructive pulmonary disease or asthma who were recruited from clinical units of Çorum Erol Olçok Training and Research Hospital, Hitit University, Türkiye. Eligible patients were enrolled during the study period if they were able to perform the respiratory muscle and pulmonary function measurements with correct technique and provided written informed consent.

Ages

18 years and older

Sex

Male participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show 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: * Being 18 years of age or older * Having a clinical diagnosis of chronic obstructive pulmonary disease or asthma * Being able to perform fixed-pressure inspiratory muscle loading and S-Index measurements in accordance with the instructions and with correct technique * Having experienced no additional clinical condition within the previous 12 weeks, apart from the existing chronic respiratory disease, that could acutely affect respiratory function * Having signed the informed consent form approved by the ethics committee Exclusion Criteria: * Smoking * Inability to perform fixed-pressure inspiratory muscle loading or dynamic respiratory muscle strength assessment according to the technical requirements of the measurement protocols * Inability to obtain reliable data due to insufficient coordination, motivation, or volitional effort * Presence of a musculoskeletal injury or surgical history affecting the diaphragm, thorax, spine, or abdominal region that could significantly impair respiratory mechanics * Presence of neurological conditions that may affect respiratory muscle function, such as neuromuscular diseases, peripheral nerve damage, or central nervous system disorders

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Conditions

The condition(s) this trial relates to.

asthma chronic obstructive pulmonary disease

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Asthma Chronic obstructive pulmonary disease (COPD)

Contacts and locations

Locations

  • Hitit University Çorum Erol Olçok Training and Research Hospital

    Çorum, Turkey (Türkiye)

More trials for these conditions

Other studies related to the condition(s) this trial covers.