Respiratory FunctionNCT07677501
Combined SOVT and Respiratory Exercises: Effects on MPT and Respiratory Function
A study testing combined soft and breathing exercises in people with Respiratory Function and Vocal Performance, run by Hasan Kalyoncu University at 1 site in Turkey (Türkiye).
Trial summary
This study aims to investigate the effects of combined SOVT and breathing exercises, administered twice weekly for six weeks to conservatory students, through a randomized controlled trial. The study has two hypotheses: H1: Combined SOVT and breathing exercises increase the maximum phonation duration. Read more about this study
- Who is it for?
- Ages 18 to 35 yearsHealthy volunteers can take part
- Conditions the study is for
- Respiratory Function, Vocal Performance, Voice
- What is being tested?
- combined soft and breathing exercises
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 91 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 21 Jul 2025to 30 May 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 35 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Being between 18 and 35 years of age
- Being an undergraduate student studying vocal training at a state conservatory
- Volunteering to actively participate in the research process and signing the written consent form
Who cannot join
- • Having been diagnosed with any voice disorder (e.g., nodule, polyp, laryngitis, dysphonia, etc.)
- Having received voice therapy, voice surgery, or respiratory physiotherapy in the past
- Having an acute or chronic respiratory disease (e.g., asthma, COPD, bronchitis)
- Participants who have had an upper respiratory tract infection in the last two weeks
- Participants with a neurological, psychiatric, or cardiopulmonary system diagnosis
- Participants who declare that they cannot regularly attend the exercise protocol
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effects of Combined Semi-Occluded Vocal Tract (SOVT) and Respiratory Exercises on Maximum Phonation Time (MPT) and Respiratory Function in Conservatory Students Across Different Academic Years
This study aims to investigate the effects of combined SOVT and breathing exercises, administered twice weekly for six weeks to conservatory students, through a randomized controlled trial. The study has two hypotheses: H1: Combined SOVT and breathing exercises increase the maximum phonation duration. H2: Combined SOVT and breathing exercises improve spirometric parameters (FEV₁, FVC, FEV₁/FVC, and PEF).
Read the detailed description
This study aims to investigate the effects of combined SOVT and breathing exercises, applied twice a week for 6 weeks, on conservatory students at Gaziantep University through a randomized controlled trial. The study has two hypotheses: H1: Combined SOVT and breathing exercises increase maximum phonation duration. H2: Combined SOVT and breathing exercises improve spirometric parameters (FEV₁, FVC, FEV₁/FVC, and PEF). In the intervention group, phonation exercises using a pipette were taught and practiced as part of the SOVT exercise. Simultaneously, pursed-lip breathing, segmental breathing, and diaphragmatic breathing exercises were taught and practiced as breathing exercises. At the end of 6 weeks, the maximum phonation duration of all participants was measured with a stopwatch. Additionally, spirometric parameters were measured using a spirometer.
- Conditions
- Respiratory Function, Vocal Performance, Voice
- Being tested
- combined soft and breathing exercises
- Keywords
- Semi-Occluded Vocal Tract Exercises, Spirometry, Maximum Phonation Time, Conservatory Students, Breathing Exercises, Voice Training, Respiratory Function
- Medical subject headings
- Respiratory Aspiration
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
combined soft and breathing exercisesOther
The intervention group underwent combined sovt and breathing exercises. Sovt exercises consisted of phonation exercises using a pipette. Breathing exercises consisted of pursed-lip breathing, segmental breathing, and diaphragmatic breathing exercises.
| Study group | Role | What they receive |
|---|---|---|
| SOVT-Breathing Group | Experimental | The exercises, which included combined sovt and breathing exercises, were performed twice a week for 6 weeks. The first measurement was taken in the first week, and the final measurement was taken after 6 weeks. Receives: Other: combined soft and breathing exercises |
| Control Group | No intervention | The first measurement was taken in the first week, and the final measurement was taken after 6 weeks and no intervention was applied. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Voice Handicap Index (VHI-10)
The Voice Handicap Index (VHI) will be used to assess participants' self-perceived voice-related handicap. The questionnaire consists of items evaluating the functional, physical, and emotional impact of voice problems. Total scores range from 0 to 40, with higher scores indicating greater perceived voice handicap.
Measured: 6 weeks
Secondary outcomes (1)
Maximum Phonation Time (MPT)
Maximum Phonation Time (MPT) will be assessed by asking participants to sustain the vowel /a/ after a maximal inhalation at a comfortable pitch and loudness. Three trials will be performed with adequate rest between trials, and the longest duration recorded in seconds will be used for analysis.
Measured: 6 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Jun 2026
- Study start21 Jul 2025
- Primary completion25 Nov 2025
- Study completion30 May 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Respiratory FunctionStudies 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 91 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hasan Kalyoncu University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Rukiye Gülcan ANDEROĞLU, Hasan Kalyoncu University
- Investigators
- ELIF DOKUNLU DINLER, Asst. Prof., Study director, Hasan Kalyoncu University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07677501
- Sponsor's protocol ID
- HasanKU-FTR-RGA-01
- Status last verified
- Jun 2026
- First submitted
- 15 Jun 2026
- Last updated
- 30 Jun 2026
- Results posted
- 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 30 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Combined Semi-Occluded Vocal Tract (SOVT) and Respiratory Exercises on Maximum Phonation Time (MPT) and Respiratory Function in Conservatory Students Across Different Academic Years
- ClinicalTrials.gov ID
- NCT07677501
- Acronym / sponsor ID
- HasanKU-FTR-RGA-01
- Conditions
- Respiratory Function, Vocal Performance, Voice
- Keywords
- Semi-Occluded Vocal Tract Exercises, Spirometry, Maximum Phonation Time, Conservatory Students, Breathing Exercises, Voice Training, Respiratory Function
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 91 participants (actual)
- Lead sponsor
- Hasan Kalyoncu UniversityUniversity, hospital or other
- Study start
- 21 Jul 2025 (actual)
- Primary completion
- 25 Nov 2025 (actual)
- Study completion
- 30 May 2026 (actual)
- First posted
- 30 Jun 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.
This study aims to investigate the effects of combined SOVT and breathing exercises, administered twice weekly for six weeks to conservatory students, through a randomized controlled trial. The study has two hypotheses: H1: Combined SOVT and breathing exercises increase the maximum phonation duration. H2: Combined SOVT and breathing exercises improve spirometric parameters (FEV₁, FVC, FEV₁/FVC, and PEF).
Detailed description
This study aims to investigate the effects of combined SOVT and breathing exercises, applied twice a week for 6 weeks, on conservatory students at Gaziantep University through a randomized controlled trial. The study has two hypotheses: H1: Combined SOVT and breathing exercises increase maximum phonation duration. H2: Combined SOVT and breathing exercises improve spirometric parameters (FEV₁, FVC, FEV₁/FVC, and PEF). In the intervention group, phonation exercises using a pipette were taught and practiced as part of the SOVT exercise. Simultaneously, pursed-lip breathing, segmental breathing, and diaphragmatic breathing exercises were taught and practiced as breathing exercises. At the end of 6 weeks, the maximum phonation duration of all participants was measured with a stopwatch. Additionally, spirometric parameters were measured using a spirometer.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| SOVT-Breathing Group | Experimental | Other: combined soft and breathing exercisesThe exercises, which included combined sovt and breathing exercises, were performed twice a week for 6 weeks. The first measurement was taken in the first week, and the final measurement was taken after 6 weeks. |
| Control Group | No intervention | –The first measurement was taken in the first week, and the final measurement was taken after 6 weeks and no intervention was applied. |
Who may qualify
- Ages
- 18 to 35 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Being between 18 and 35 years of age
Key exclusion criteria (6 listed)
- • Having been diagnosed with any voice disorder (e.g., nodule, polyp, laryngitis, dysphonia, etc.)
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 |
|---|---|---|
| combined soft and breathing exercisesThe intervention group underwent combined sovt and breathing exercises. Sovt exercises consisted of phonation exercises using a pipette. Breathing exercises consisted of pursed-lip breathing, segmental breathing, and diaphragmatic breathing exercises. | Other | SOVT-Breathing Group |
Primary outcome
Voice Handicap Index (VHI-10)
Time frame: 6 weeks
The Voice Handicap Index (VHI) will be used to assess participants' self-perceived voice-related handicap. The questionnaire consists of items evaluating the functional, physical, and emotional impact of voice problems. Total scores range from 0 to 40, with higher scores indicating greater perceived voice handicap.
1 secondary outcome
Maximum Phonation Time (MPT)
Time frame: 6 weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Jun 2026.
- 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. This study is not recruiting at the moment.
ELIF DOKUNLU DINLER, Asst. Prof. study director
Hasan Kalyoncu University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing combined soft and breathing exercises in people with Respiratory Function and Vocal Performance, run by Hasan Kalyoncu 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 6 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: finished, as of the sponsor's last update on 30 Jun 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Voice Handicap Index (VHI-10) (time frame: 6 weeks). 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 30 Jun 2026.