| Enrolling By Invitation | Immersive Virtual Reality Meditation in Voice Therapy NCT07176013 | Icahn School of Medicine at Mount Sinai | N/A |
| Not Yet Recruiting | Investigating Muscle Training's Respiratory Outcomes and Voice Enhancement in Parkinson's Disease NCT06473428 | National Taiwan University Hospital | N/A |
| Recruiting | RCT Face-to-face Group Voice Therapy vs Telepractice Group Voice Therapy for Muscle Tension Dysphonia NCT06524193 | Chinese University of Hong Kong | N/A |
| Recruiting | Project 4: Ambulatory Biofeedback and Voice Therapy for Patients With Vocal Hyperfunction NCT05970562 | Massachusetts General Hospital | EARLY_Phase 1 |
| Completed | DaxibotulinumtoxinA Injection for Treatment of Adductor Spasmodic Dysphonia NCT05158166 | University of California, San Francisco | Phase 1 / Phase 2 |
| Recruiting | Brain and Voice Signatures in Teachers NCT06126627 | University Hospital, Bonn | N/A |
| Recruiting | Improving Efficacy of Voice Therapy Concepts Via Telepractice and Mobile App Technology NCT05220982 | West Chester University of Pennsylvania | N/A |
| Not Yet Recruiting | Multimodal Analysis of Structural Voice Disorders Based on Speech and Stroboscopic Laryngoscope Video NCT05348031 | Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University | — |
| Unknown | Assessment of Multidimensional Voice Program (MDVP) Parameters in Workers NCT05215301 | Fakultas Kedokteran Universitas Indonesia | — |
| Active Not Recruiting | Straw Phonation Exercise Program for Pitch Extension NCT05357222 | University of Utah | N/A |
| Completed | Voice Therapy With a Semi-occluded Vocal Tract NCT06137131 | University Ghent | N/A |
| Unknown | Voice Analysis in Patients With Neurologic Diseases NCT04846413 | Neuromed IRCCS | — |
| Completed | Assessment of Laryngopharyngeal Sensation in Adductor Spasmodic Dysphonia NCT05158179 | University of California, San Francisco | N/A |
| Completed | The Effect of Combined Speech and Music-therapy on the Speech Characteristics of People With Parkinson's Disea NCT04966689 | Iran University of Medical Sciences | N/A |
| Unknown | Effect of Anti-adhesion Barrier on the Voice Quality After Thyroidectomy. NCT04853680 | Inha University Hospital | N/A |
| Completed | Correlation Between Montreal Cognitive Assessment and Voice Therapy Outcomes in the Aging Treatment- Seeking P NCT05187910 | University of California, San Francisco | N/A |
| Completed | A Study to Evaluate Effects of Gargle Phonation in Voice NCT04766658 | Mayo Clinic | N/A |
| Completed | Personal Protective Equipment Effects NCT05369663 | Istanbul Medeniyet University | — |
| Unknown | Comparison of BL and KTP Laser for Treatment of Benign Vocal Fold Lesions NCT04513392 | University of Toronto | N/A |
| Completed | Dysphagia and Dysphonia Outcomes in SARS CoV-2 (COVID-19) Infection (DYADS Study) NCT04584658 | Cambridge University Hospitals NHS Foundation Trust | — |
| Completed | Virtual Reality in Teachers' Vocal Motor Behavior Acquisition (VirtuVox) NCT04096352 | University of Liege | N/A |
| Completed | Testing a Smart Phone App to Enhance Voice Therapy Adherence NCT04002336 | Vrushali Angadi | N/A |
| Terminated | Development of Imaging Biomarkers for Voice After Pediatric Airway Reconstruction NCT03076931 | Children's Hospital Medical Center, Cincinnati | N/A |
| Completed | Efficacy of Conversation Training Therapy (CTT) NCT02441348 | University of Pittsburgh | — |
| Completed | Dysphonia, Distress, and Perceived Control: Technology Based Assessment and Intervention NCT03576365 | University of Minnesota | N/A |
| Completed | Phonosurgical Augmentation After Laser Resection of Early Glottic Carcinoma NCT04525066 | Ayhman Al Afif | Phase 2 |
| Completed | Vocal Warm-up and Respiratory Muscle Training NCT02102399 | Federal University of Bahia | N/A |
| Completed | Vocal Demands Among Classroom Teachers NCT01625728 | Southern Illinois University Carbondale | — |
| Completed | Interaction of Caffeine and Hydration on Voice NCT01435837 | Southern Illinois University Carbondale | EARLY_Phase 1 |
| Completed | Effectiveness of Two Therapeutic Approaches in Female Teachers With Voice Disorders NCT01196611 | Federal University of São Paulo | N/A |
| Completed | Swallowing Training in Parkinson's Disease NCT01131494 | Federal University of Bahia | N/A |
| Completed | Immediate Effect Analysis of Vocal Techniques NCT00961818 | Tuiuti University of Paraná | — |
| Completed | Study to Assess the Incidence of Local Oropharyngeal and Laryngeal Adverse Effects of Advair DISKUS 250/50 mcg NCT00235053 | Allergy & Asthma Medical Group & Research Center | Phase 4 |
| Completed | Neuropathology of Spasmodic Dysphonia NCT00118586 | National Institute of Neurological Disorders and Stroke (NINDS) | — |
| Terminated | Quantifying Effects of Treatment of Pediatric Dysphonia NCT00237679 | University of Wisconsin, Madison | N/A |
| Completed | Brain Mapping of Voice Control NCT00066911 | National Institute of Neurological Disorders and Stroke (NINDS) | — |
| Completed | Dextromethorphan to Treat Patients With Voice Spasms NCT00055549 | National Institute of Neurological Disorders and Stroke (NINDS) | Phase 1 |