Combined SOVT and Respiratory Exercises: Effects on MPT and Respiratory Function

NCT07677501 | Completed

• 1 other identifier: HasanKU-FTR-RGA-01
• Study Type: interventional
• Target: 91
• Locations: 1 country
• Sites: 1

Brief 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. H2: Combined SOVT and breathing exercises improve spirometric parameters (FEV₁, FVC, FEV₁/FVC, and PEF).

Conditions

Respiratory Function; Vocal Performance; Voice

Keywords

Semi-Occluded Vocal Tract Exercises; Spirometry; Maximum Phonation Time; Conservatory Students; Breathing Exercises; Voice Training; Respiratory Function

Outcome Measures

Primary Outcomes (1)

• 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.

  6 weeks

Secondary Outcomes (1)

• Maximum Phonation Time (MPT)

  6 weeks

Other Outcomes (4)

• Forced Vital Capacity (FVC)

  6 weeks

• Forced Expiratory Volume in 1 Second (FEV₁)

  6 weeks

• FEV₁/FVC Ratio

  6 weeks

Study Arms (2)

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.

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.

Interventions

combined soft and breathing exercises OTHER

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.

SOVT-Breathing Group

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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

You may not qualify if:

• 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

Sponsors & Collaborators

• Hasan Kalyoncu University: lead

Study Sites (1)

Hasan Kalyoncu University

Gaziantep, 27000, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Respiratory Aspiration

Interventions

Breathing Exercises

Condition Hierarchy (Ancestors)

Respiration Disorders; Respiratory Tract Diseases; Pathologic Processes; Pathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Mind-Body Therapies; Complementary Therapies; Therapeutics; Exercise Movement Techniques; Physical Therapy Modalities

Study Officials

• ELIF DOKUNLU DINLER, Asst. Prof.

  Hasan Kalyoncu University

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Physiotherapist

Study Record Dates

• First Submitted: June 15, 2026
• First Posted: June 30, 2026
• Study Start: July 21, 2025
• Primary Completion: November 25, 2025
• Study Completion: May 30, 2026
• Last Updated: June 30, 2026

Record last verified: 2026-06

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)