Addiction of Lung Volume Recruitment Technique in Lee Silverman Protocol for Voice Professionals (LVRTVOICE)

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.

Study Overview

• Status: Recruiting
• Conditions: Voice Quality; Singing
• Intervention / Treatment: Procedure: Adapted Lee Silverman Method; Device: Lung volume recruitment technique - LVRT

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 Type: Interventional
• Enrollment (Estimated): 20
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Janaina P Janaina Pimenta, Msc; Phone Number: + 55 31994979352; Email: janaina@espacodavoz.com.br

Study Locations

• Brazil
  • Goiás
    • Anápolis, Goiás, Brazil, 700000
      • Recruiting
      • Unievangelica
      • Contact: Janaina P Janaina Pimenta, Msc; Phone Number: +55 31 99497-3245; Email: janaina@espacodavoz.com.br

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Voice professionals with no voice disease

Exclusion Criteria:

• smokers
• Glottis paralysis and dysfunction
• dental problems
• Mental and cognitive disorders

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: adapted Lee Silverman Method; 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.	Procedure: Adapted Lee Silverman Method; Exercise protocol with 6 steps that the voice professionals adapted from Lee Silverman Method
Experimental: Lung volume recruitment Technique - LVRT; 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.	Device: Lung volume recruitment technique - LVRT; 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.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Vocal Range Profile	Minimum fundamental frequency - f0; Maximum f0; Extension f0; Extension in Semitone; Minimum intensity; Maximum intensity and Area	30 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
functional laryngeal assessment	The Colton and Casper protocol will assess phonatory function using an endoscopic evaluation with a flexible fiberoptic endoscope.	30 days
Respiratory muscle strength	Dynamic inspiratory muscle strength (S-index) will be obtained using the KH5 device of the POWERbreathe®.	30 days

Collaborators and Investigators

• Sponsor: Escola Superior de Ciencias da Saude

Study record dates

Study Major Dates

• Study Start (Actual): May 23, 2026
• Primary Completion (Actual): May 23, 2026
• Study Completion (Estimated): July 31, 2026

Study Registration Dates

• First Submitted: November 25, 2024
• First Submitted That Met QC Criteria: November 30, 2024
• First Posted (Actual): December 3, 2024

Study Record Updates

• Last Update Posted (Actual): May 28, 2026
• Last Update Submitted That Met QC Criteria: May 23, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: respiratory therapy; acoustic; voice training
• Other Study ID Numbers: LVRT VOICE TRAINING

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: a one center trial study without another institution linked with it

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No