Deconstructing Voice Therapy: Towards Enhanced Communication Outcomes
Emory University
120 participants
Sep 3, 2025
INTERVENTIONAL
Conditions
Summary
This research study aims to evaluate the effect of treatment delivery method on voice outcomes over 12 months in people with a primary complaint of a voice problem, diagnosed with either non-phonotraumatic vocal hyperfunction, also known as primary muscle tension dysphonia (MTD) or phonotraumatic vocal hyperfunction, also known as benign vocal fold lesions (lesions). The secondary objectives are: * To evaluate acoustic correlates of clear speech and the relationship to vocal acoustic and patient-reported voice outcomes. * To determine the association between overall dysphonia outcomes and adoption of clear speech.
Eligibility
Inclusion Criteria7
- Non-smoking
- Diagnosis of either primary muscle tension dysphonia of the hyperadducted type or benign vocal fold lesions.
- No neuro-laryngologic or age-related vocal fold changes (e.g., atrophy)
- No history of voice therapy or voice surgery in the last year
- No history of other serious chronic medical conditions that may affect voice (per patient report), Normal hearing (determined by pure tone audiometry), stimulable and appropriate for behavioral voice intervention as determined by a voice-specialized speech-language pathologist and laryngologist,
- Willingness to attend all therapeutic interventions and follow-up sessions
- Willingness to use a smartphone to record practice
Exclusion Criteria10
- History of voice therapy or voice surgery in the last year
- Serious chronic medical condition that may affect voice (per patient report)
- Abnormal hearing ability (despite appropriate amplification)
- Other laryngeal disorders not attributed to primary MTD and benign vocal fold lesions,
- Not stimulable or inappropriate for behavioral voice intervention as determined by a voice-specialized speech-language pathologist and laryngologist
- Unwillingness to attend therapeutic intervention and follow-up sessions
- Unwillingness to use a smartphone to record practice
- Pregnant women
- Prisoners
- Cognitive impairment or impaired decision-making capacity
Interested in this trial?
Get notified about updates and connect with the research team.
Interventions
Participants in the hierarchical version of Conversation Training Therapy (CTTH) will receive four weekly sessions of voice therapy. This approach gradually increases the difficulty of speaking tasks-from simple sounds to full conversations-based on the participant's progress. The therapy begins with basic awareness and speech sounds (e.g., consonant-vowel pairs), then progresses through words, phrases, and sentences, culminating in natural conversation. Each level must be completed with at least 80% accuracy before proceeding to the next one. The structure is modeled after traditional voice therapies like resonant voice and aims to help participants succeed early and reduce mental fatigue. Daily homework includes seven short (2.5-minute) practice sessions, aligned with prior research showing this is a realistic and effective amount of practice.
The therapy includes four weekly sessions and several key techniques: Clear Speech: Speaking clearly, like leaving an important voicemail. Awareness Training: Paying attention to how the voice sounds and feels in the mouth and face. Negative Practice: Switching between their "bad" voice and "good" therapy voice to recognize and improve differences. Embedded Gestures: Briefly holding certain speech sounds to reduce vocal strain and boost clarity. Prosody and Projection: Working on pitch, rhythm, and speaking louder through better technique. Participants practice these skills throughout the day using a mobile app to track their progress and record a weekly sample. Unlike hierarchical models, components in CTT can be introduced in any order based on individual needs, making it flexible and personalized
Locations(1)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT07176988