Voice QualityLVRTVOICENCT06712979
Addiction of Lung Volume Recruitment Technique in Lee Silverman Protocol for Voice Professionals
A study testing Adapted Lee Silverman Method and Lung volume recruitment technique - LVRT in people with Voice Quality and Singing, run by Escola Superior de Ciencias da Saude at 1 site in Brazil.
Trial summary
The goal of this clinical trial in voice professionals with both genders aimed to verify the changes in the vocal range profile and the changes in the glottic and vocal tract configuration for more efficient phonation after applying the adapted Lee Silverman Method and the addiction of lung volume recruitment… Read more about this study
- Who is it for?
- Ages 20 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Voice Quality, Singing
- What is being tested?
- Adapted Lee Silverman Method and Lung volume recruitment technique - LVRT
- Type of treatment
- Medical device, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteBrazil
- Study dates
- 23 May 2026to 31 Jul 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 20 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Voice professionals with no voice disease
Who cannot join
- smokers
- Glottis paralysis and dysfunction
- dental problems
- Mental and cognitive disorders
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Brazil1 site, 1 recruiting
- Recruiting
Unievangelica
Anápolis, Goiás, 700000
Janaina P Janaina Pimenta, Msc, +55 31 99497-3245, janaina@espacodavoz.com.br
About this study
Official title: Comparison Between Lee- Silverman Method and Lung Volume Recruitment Tecnhique in Voice Professionals
The goal of this clinical trial in voice professionals with both genders aimed to verify the changes in the vocal range profile and the changes in the glottic and vocal tract configuration for more efficient phonation after applying the adapted Lee Silverman Method and the addiction of lung volume recruitment technique in acoustic and structural analysis.
Read the detailed description
A cross-over randomized trial with two arms-the Lee Silverman Method and the addiction of lung volume recruitment technique (LVRT)-will be conducted with voice professionals to assess the effects of both interventions on the acoustic, perceptive, and visual aspects of voice and their impact on respiratory muscle strength.
- Conditions
- Voice Quality, Singing
- Being tested
- Adapted Lee Silverman Method, Lung volume recruitment technique - LVRT
- Keywords
- voice training, acoustic, respiratory therapy
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Adapted Lee Silverman MethodProcedure or surgery
Exercise protocol with 6 steps that the voice professionals adapted from Lee Silverman Method
Lung volume recruitment technique - LVRTDevice
The adapted Lee Silverman Method will have a addiction of LVRT technique. Lung inflation begins, reaching an optimal inspiratory peak of 30 cmH2O. From this point, the sound /HA/ begins to be emitted until the most comfortable low sound, where the emission should be maintained for as long as possible, making sure that this time is not less than 12 seconds, trying to emit a high and comfortable vocal intensity. When performing the emissions, the mouth should be kept wide open with the tongue, jaw and neck relaxed, repeating 5 emissions in 3 series. Between series, the participant will be instructed to drink 50 ml of water exactly as in the previous emissions.
| Study group | Role | What they receive |
|---|---|---|
| adapted Lee Silverman Method | Active comparator | The individuals will perform the Lee Silverman methods adapted to voice professionals. They will do a 14-day protocol, with three sets of 5 repetitions daily. Receives: Procedure: Adapted Lee Silverman Method |
| Lung volume recruitment Technique - LVRT | Experimental | In the LVRT intervention, the same exercises as in the adapted LEE Silverman intervention will be performed, however, a bag-mask ventilation system (Lumiar, Brazil) will be attached during the emission with an inflated oro-nasal mask (Lumiar, Brazil) connected to a pressure gauge (Illife device, Brazil) that will monitor the inspiratory pressure level between 30 and 40 cmH2O during phonatory emissions. it will be performed 3 sets with 5 repetitions. Receives: Device: Lung volume recruitment technique - LVRT |
What is being measured
The primary outcome is the main question the study is designed to answer.
Vocal Range Profile
Minimum fundamental frequency - f0; Maximum f0; Extension f0; Extension in Semitone; Minimum intensity; Maximum intensity and Area
Measured: 30 days
Secondary outcomes (2)
functional laryngeal assessment
The Colton and Casper protocol will assess phonatory function using an endoscopic evaluation with a flexible fiberoptic endoscope.
Measured: 30 days
Respiratory muscle strength
Dynamic inspiratory muscle strength (S-index) will be obtained using the KH5 device of the POWERbreathe®.
Measured: 30 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Dec 2024
- Study start23 May 2026
- Primary completion23 May 2026
- Study completion31 Jul 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Voice QualityStudies 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
- Crossover
- Model description
- all participants will perform adapted Lee Silverman Method (Adapt Lee) and Lung volume recruitment technique plus Adapt Lee during 2 weeks, with washout period of 6 weeks.
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Escola Superior de Ciencias da Saude
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Vinicius Zacarias Maldaner da silva, Escola Superior de Ciencias da Saude
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06712979
- Sponsor's protocol ID
- LVRT VOICE TRAINING
- Acronym
- LVRTVOICE
- Status last verified
- May 2026
- First submitted
- 25 Nov 2024
- Last updated
- 28 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: a one center trial study without another institution linked with it
Study at a glance
From the registry record, last updated by the sponsor on 28 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison Between Lee- Silverman Method and Lung Volume Recruitment Tecnhique in Voice Professionals
- ClinicalTrials.gov ID
- NCT06712979
- Acronym / sponsor ID
- LVRTVOICE / LVRT VOICE TRAINING
- Conditions
- Voice Quality, Singing
- Keywords
- voice training, acoustic, respiratory therapy
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- Escola Superior de Ciencias da SaudeUniversity, hospital or other
- Study start
- 23 May 2026 (actual)
- Primary completion
- 23 May 2026 (actual)
- Study completion
- 31 Jul 2026 (estimated)
- First posted
- 3 Dec 2024 (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.
The goal of this clinical trial in voice professionals with both genders aimed to verify the changes in the vocal range profile and the changes in the glottic and vocal tract configuration for more efficient phonation after applying the adapted Lee Silverman Method and the addiction of lung volume recruitment technique in acoustic and structural analysis.
Detailed description
A cross-over randomized trial with two arms-the Lee Silverman Method and the addiction of lung volume recruitment technique (LVRT)-will be conducted with voice professionals to assess the effects of both interventions on the acoustic, perceptive, and visual aspects of voice and their impact on respiratory muscle strength.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
- Model description
- all participants will perform adapted Lee Silverman Method (Adapt Lee) and Lung volume recruitment technique plus Adapt Lee during 2 weeks, with washout period of 6 weeks.
| Arm | Type | Receives |
|---|---|---|
| adapted Lee Silverman Method | Active comparator | Procedure: Adapted Lee Silverman MethodThe individuals will perform the Lee Silverman methods adapted to voice professionals. They will do a 14-day protocol, with three sets of 5 repetitions daily. |
| Lung volume recruitment Technique - LVRT | Experimental | Device: Lung volume recruitment technique - LVRTIn the LVRT intervention, the same exercises as in the adapted LEE Silverman intervention will be performed, however, a bag-mask ventilation system (Lumiar, Brazil) will be attached during the emission with an inflated oro-nasal mask (Lumiar, Brazil) connected to a pressure gauge (Illife device, Brazil) that will monitor the inspiratory pressure level between 30 and 40 cmH2O during phonatory emissions. it will be performed 3 sets with 5 repetitions. |
Who may qualify
- Ages
- 20 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Voice professionals with no voice disease
Key exclusion criteria (4 listed)
- smokers
- Glottis paralysis and dysfunction
- dental problems
- Mental and cognitive disorders
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 |
|---|---|---|
| Adapted Lee Silverman MethodExercise protocol with 6 steps that the voice professionals adapted from Lee Silverman Method | Procedure or surgery | adapted Lee Silverman Method |
| Lung volume recruitment technique - LVRTThe adapted Lee Silverman Method will have a addiction of LVRT technique. Lung inflation begins, reaching an optimal inspiratory peak of 30 cmH2O. From this point, the sound /HA/ begins to be emitted until the most comfortable low sound, where the emission should be maintained for as long as possible, making sure that this time is not less than 12 seconds, trying to emit a high and comfortable vocal intensity. When performing the emissions, the mouth should be kept wide open with the tongue, jaw and neck relaxed, repeating 5 emissions in 3 series. Between series, the participant will be instructed to drink 50 ml of water exactly as in the previous emissions. | Device | Lung volume recruitment Technique - LVRT |
Primary outcome
Vocal Range Profile
Time frame: 30 days
Minimum fundamental frequency - f0; Maximum f0; Extension f0; Extension in Semitone; Minimum intensity; Maximum intensity and Area
2 secondary outcomes
functional laryngeal assessment
Time frame: 30 days
Respiratory muscle strength
Time frame: 30 days
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 May 2026.
- Individual participant dataSharing planned: No. a one center trial study without another institution linked with it
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Adapted Lee Silverman Method and Lung volume recruitment technique - LVRT in people with Voice Quality and Singing, run by Escola Superior de Ciencias da Saude at 1 site in Brazil.
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 1 inclusion and 4 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: looking for participants now, as of the sponsor's last update on 28 May 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 Brazil. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Janaina P Janaina Pimenta, Msc (+ 55 31994979352, janaina@espacodavoz.com.br), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Vocal Range Profile (time frame: 30 days). 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 28 May 2026.