Obstructive Sleep Apnea (OSAS)NCT07743892
Obstructive Sleep Apnea and Body Awareness
An observational study of Obstructive Sleep Apnea (OSAS), run by Karabuk University at 1 site in Turkey (Türkiye).
Trial summary
Obstructive Sleep Apnea Syndrome (OSAS) is a chronic disease characterized by intermittent hypoxia and sleep fragmentation resulting from recurrent upper airway obstructions. The physiological and neurocognitive changes caused by the disease can affect how individuals perceive and interpret bodily sensations. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Obstructive Sleep Apnea (OSAS)
- How many people
- 47 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 21 May 2026to 30 Jun 2027
- Phase
- Observational
- 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 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Patients with obstructive sleep apnea syndrome
Who may be able to join
- Receiving a diagnosis of OSA after polysomnography,
- Having an Apnea-Hypopnea Index ≥5 for OSA,
- Volunteering to participate in the study.
Who cannot join
- Having severe orthopedic, neurological, or cardiac diseases,
- Having a diagnosed lung disease,
- Having a previous or current history of psychiatric or neurological disorders,
- Not voluntarily participating in the study.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Karabük Training and Research Hospital
Karabük
Musa Güneş, PhD, +90 370 418 9081, musagunes@karabuk.edu.tr
About this study
Official title: The Relationship Between Body Awareness and Clinical Parameters in Patients With Obstructive Sleep Apnea
Obstructive Sleep Apnea Syndrome (OSAS) is a chronic disease characterized by intermittent hypoxia and sleep fragmentation resulting from recurrent upper airway obstructions. The physiological and neurocognitive changes caused by the disease can affect how individuals perceive and interpret bodily sensations. Although body awareness plays a significant role in the perception and management of symptoms, its relationship with clinical parameters in individuals with OSAS has not been sufficiently investigated. Therefore, the aim of our study is to examine the relationship between body awareness and respiratory function, disease severity, fatigue, shortness of breath, and sleep quality in OSAS patients.
- Conditions
- Obstructive Sleep Apnea (OSAS)
- Medical subject headings
- Sleep Apnea, Obstructive
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Obstructive Sleep Apnea Syndrome Group | Patients diagnosed with Obstructive Sleep Apnea Syndrome |
What is being measured
The primary outcome is the main question the study is designed to answer.
Body awareness
The Body Awareness Questionnaire (BAQ) will be used to assess individuals' body awareness. The scale score ranges from 18 to 26, with higher scores indicating higher awareness.
Measured: Baseline
Dyspnea
Dyspnea is assessed with the modified Medical Research Council (mMRC) dyspnea scale. As the score increases, shortness of breath increases.
Measured: Baseline
Disease severity
The evaluation will be based on the Apnea/Hypopnea index measured by polysomnography. An Apnea-Hypopnea Index >5 indicates Obstructive Sleep Apnea Syndrome.
Measured: Baseline
Fatigue severity
Fatigue will be assessed using the Fatigue Severity Scale. A score of 36 or higher indicates severe fatigue.
Measured: Baseline
Sleep quality
Sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PUKI). The total score ranges from 0 to 21, and a score above 5 indicates poor sleep quality.
Measured: Baseline
Pulmonary function (Forced vital capacity (FVC)
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Forced vital capacity (FVC) will be measured.
Measured: Baseline
Pulmonary function (Forced expiratory volume in the first second (FEV1)
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Forced expiratory volume in the first second (FEV1) will be measured.
Measured: Baseline
Pulmonary function (FEV1 / FVC)
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. FEV1 / FVC will be measured.
Measured: Baseline
Pulmonary function (Flow rate 25-75% of forced expiratory volume (FEF 25-75%))
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Flow rate 25-75% of forced expiratory volume (FEF 25-75%) will be measured.
Measured: Baseline
Pulmonary function (Peak flow rate (PEF))
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Peak flow rate (PEF) will be measured.
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Aug 2026
- Study start21 May 2026
- Primary completion21 May 2027 (estimated)
- Study completion30 Jun 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Obstructive Sleep Apnea (OSAS)Studies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Case only
- Time perspective
- Cross-sectional
- Enrolment
- 47 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Karabuk University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Musa Güneş, Karabuk University
- Investigators
- Musa Güneş, PhD, Principal investigator, Karabuk University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07743892
- Sponsor's protocol ID
- Karabuk_005
- Status last verified
- Jul 2026
- First submitted
- 28 Jul 2026
- Last updated
- 4 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 4 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Relationship Between Body Awareness and Clinical Parameters in Patients With Obstructive Sleep Apnea
- ClinicalTrials.gov ID
- NCT07743892
- Acronym / sponsor ID
- Karabuk_005
- Conditions
- Obstructive Sleep Apnea (OSAS)
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 47 participants (estimated)
- Lead sponsor
- Karabuk UniversityUniversity, hospital or other
- Study start
- 21 May 2026 (actual)
- Primary completion
- 21 May 2027 (estimated)
- Study completion
- 30 Jun 2027 (estimated)
- First posted
- 4 Aug 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.
Obstructive Sleep Apnea Syndrome (OSAS) is a chronic disease characterized by intermittent hypoxia and sleep fragmentation resulting from recurrent upper airway obstructions. The physiological and neurocognitive changes caused by the disease can affect how individuals perceive and interpret bodily sensations. Although body awareness plays a significant role in the perception and management of symptoms, its relationship with clinical parameters in individuals with OSAS has not been sufficiently investigated. Therefore, the aim of our study is to examine the relationship between body awareness and respiratory function, disease severity, fatigue, shortness of breath, and sleep quality in OSAS patients.
Study design
- Observational model
- Case only
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Obstructive Sleep Apnea Syndrome Group | – | –Patients diagnosed with Obstructive Sleep Apnea Syndrome |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Patients with obstructive sleep apnea syndrome
Key inclusion criteria (3 listed)
- Receiving a diagnosis of OSA after polysomnography,
- Having an Apnea-Hypopnea Index ≥5 for OSA,
- Volunteering to participate in the study.
Key exclusion criteria (4 listed)
- Having severe orthopedic, neurological, or cardiac diseases,
- Having a diagnosed lung disease,
- Having a previous or current history of psychiatric or neurological disorders,
- Not voluntarily participating in the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Body awareness
Time frame: Baseline
The Body Awareness Questionnaire (BAQ) will be used to assess individuals' body awareness. The scale score ranges from 18 to 26, with higher scores indicating higher awareness.
Dyspnea
Time frame: Baseline
Dyspnea is assessed with the modified Medical Research Council (mMRC) dyspnea scale. As the score increases, shortness of breath increases.
Disease severity
Time frame: Baseline
The evaluation will be based on the Apnea/Hypopnea index measured by polysomnography. An Apnea-Hypopnea Index >5 indicates Obstructive Sleep Apnea Syndrome.
Fatigue severity
Time frame: Baseline
Fatigue will be assessed using the Fatigue Severity Scale. A score of 36 or higher indicates severe fatigue.
Sleep quality
Time frame: Baseline
Sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PUKI). The total score ranges from 0 to 21, and a score above 5 indicates poor sleep quality.
Pulmonary function (Forced vital capacity (FVC)
Time frame: Baseline
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Forced vital capacity (FVC) will be measured.
Pulmonary function (Forced expiratory volume in the first second (FEV1)
Time frame: Baseline
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Forced expiratory volume in the first second (FEV1) will be measured.
Pulmonary function (FEV1 / FVC)
Time frame: Baseline
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. FEV1 / FVC will be measured.
Pulmonary function (Flow rate 25-75% of forced expiratory volume (FEF 25-75%))
Time frame: Baseline
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Flow rate 25-75% of forced expiratory volume (FEF 25-75%) will be measured.
Pulmonary function (Peak flow rate (PEF))
Time frame: Baseline
Pulmonary function will be evaluated using the spirometry, according to American Thoracic Society and European Respiratory Society criteria. Peak flow rate (PEF) will be measured.
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 4 Aug 2026.
- Individual participant dataSharing planned: No
Related trials for Obstructive Sleep Apnea (OSAS)
Recruiting
The Effects of Successful OSA Treatment on Memory and AD Biomarkers in Older Adults Study
Obstructive Sleep Apnea, Cognitive Decline
RecruitingObservational study
Prevalence, Phenotypes, Predictors and Prognostic Implication of Obstructive Sleep Apnea in Pulmonary Hypertension
Sleep Apnea, Obstructive Sleep Apnea
Recruiting
Effect of Transcutaneous Electrical Stimulation on Polysomnographic Parameters in Patients With Obstructive Sleep Apnea
Obstructive Sleep Apnea
Not yet recruiting
Physical Activity, Sleep Quality, and Respiratory Function in Obstructive Sleep Apnea
Obstructive Sleep Apnea, Sleep Quality
RecruitingPhase 4
Impact GLP-1 Agonists Following Bariatric
Morbid Obesity, Metabolic Syndrome
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.
Musa Güneş, PhD principal investigator
Karabuk University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Obstructive Sleep Apnea (OSAS), run by Karabuk University at 1 site in Turkey (Türkiye).
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 3 inclusion and 4 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 4 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 Turkey (Türkiye). 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 Musa Güneş, PhD (+90 370 418 9081, musagunes@karabuk.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Body awareness (time frame: Baseline). The study lists 10 primary outcomes in all. 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 4 Aug 2026.