Improving voice quality in adults with non-organic dysphonia

Resonance Tube Voice Therapy Versus Smith Accent Therapy in The Management of Non-Organic Dysphonia in Adults

Not applicable Interventional Sohag University · NCT06856785

This study is testing two different voice therapy techniques to see which one helps adults with voice problems feel and sound better.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages15 Years to 60 Years
SexAll
SponsorSohag University Academic / other
Locations1 site (Sohag)
Trial IDNCT06856785 on ClinicalTrials.gov

What this trial studies

This study aims to compare the effectiveness of two voice therapy techniques, Resonance Tube Voice Therapy and the Traditional Smith-accent Method, in enhancing voice quality for adults diagnosed with non-organic functional dysphonia. Participants aged 15 to 60 who are native Arabic speakers will be enrolled based on a clinical assessment by a phoniatrician. The interventions will involve training using a semi-occluded vocal tract approach in water. The outcomes will be measured to determine which method yields better results in voice quality improvement.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 15 to 60 with a diagnosis of non-organic functional dysphonia who are native Arabic speakers.

Not a fit: Patients with organic voice disorders or those experiencing severe respiratory allergies or other significant health issues may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide patients with effective therapeutic options to improve their voice quality and overall communication abilities.

How similar studies have performed: While there is limited information on the success of similar approaches, the study aims to explore the effectiveness of established voice therapy methods in a specific population.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients diagnosed with non-organic functional dysphonia with or without Minimally Associated Pathological lesions and referred for voice therapy. The diagnosis was based on the results of the routine clinical assessment of cases of voice disorders by a phoniatrician in the voice clinic.
* Patients 'ages between 15 - 60 years old.
* Native speakers of Arabic.
* Language comprehension adequate for the task.

Exclusion Criteria:

* Patients with organic voice disorders.
* Patients with aphonia or Phon asthenia.
* Females within the week of their menstrual cycle or menstruating at the time of data collection to control for the possible hormonal effects or premenstrual water retention on voice quality.
* History of severe respiratory allergies, thyroid pathologies, neuro-motor impairment, hearing impairment, psychiatric problems and physically limiting diseases that might interfere with study completion.
* Those on any regular medication that might affect voice quality.
* Speech disorders.
* Cigarette smoking, alcohol, or drug abuse for the past 5 years.
* Patients with previous micro laryngeal surgery.
* Patients with gastrointestinal reflux disease.

Where this trial is running

Sohag

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Functional DysphoniaResonance Tube Voice TherapySmith Accent Method Therapy
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.