Analysis of the Effects of Vocal Conditioning Through Semi-occluded Vocal Tract Exercises in Choir Singers

Not Applicable

• Conditions: Voice
• Interventions: Other: Staw phonation; Other: Finnish tube

• Registration Number: NCT03101449
• Lead Sponsor: Federal University of Health Science of Porto Alegre

Brief Summary

This research aims to evaluate the effects of vocal conditioning through two semioccluded vocal tract exercises (SOVTE) in choir singers.

Detailed Description

This research aims to evaluate the effects of vocal conditioning through two semioccluded vocal tract exercises (SOVTE) - Finnish tube and phonation in high strength straw - in vocal parameters, vocal extension profile and maximum phonation time for a period of four months in a group of singers. acoustic analysis will be performed of the average parameters of the fundamental frequency (F0), jitter, shimmer and glottal to Noise Excitation (GNE) by VoxMetria program and perceptual analysis through Consensus Assessment Perceptual Hearing the Voice Protocol (CAPE-V) three times: before the vocal conditioning, after the last meeting of the technical realization and a week after the vocal conditioning period.

Study Timeline

• Study Start: 2016-03
• Study First Submitted: 2016-10-26
• Status Verified: 2017-03
• Study First Submitted QC: 2017-03-30
• Last Update Submitted: 2017-03-30
• Primary Completion: 2017-04
• Study First Posted: 2017-04-05
• Last Update Posted: 2017-04-05
• Study Completion: 2017-07

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• signing of the Informed Consent (IC).

Exclusion Criteria

• voice disorders diagnosed by otolaryngologist physician;
• smokers;
• presence below 75% in the meetings.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Group 2	Staw phonation	20 individuals of Coral UFCSPA without voice problems carry out the exercise straw phonation before choir practice once a week for a period of 14 weeks. The exercise will be carried out with blowing set to sound at regular frequency, with frequency variation and with the melody of "Happy Birthday"; each sequence will be held for 2 minutes with 1 minute interval between them.
Group 1	Finnish tube	20 individuals of Coral UFCSPA without voice problems carry out the exercise with Finnish tube before choir practice once a week for a period of 14 weeks. The exercise will be carried out with blowing set to sound at regular frequency, with frequency variation and with the melody of "Happy Birthday"; each sequence will be held for 2 minutes with 1 minute interval between them.

Primary Outcome Measures

Name	Time	Method
Voice quality	3 months	Improved singing voice quality standard demonstrated by the perceptual analysis of voice with CAPE- V, in which there is a decrease in score value pre and post intervention.

Secondary Outcome Measures

Name	Time	Method
Mean fundamental frequency	3 months	Improvement of acoustic parameters, demonstrated by VoxMetria software.
Glottal to Noise Excitation (GNE)	3 months	Improvement of acoustic parameters, demonstrated by VoxMetria software.
Profile vocal range	3 months	Improved profile vocal range, shown by Vocalgrama software.
Maximun phonation time	3 months	Improvement of maximum phonation time, demonstrated by measuring the maximum times of sustaining vowels and phonemes /s/ and /z/.
Jitter	3 months	Improvement of acoustic parameters, demonstrated by VoxMetria software.
Shimmer	3 months	Improvement of acoustic parameters, demonstrated by VoxMetria software.

Trial Locations

Locations (1)

Federal University of Health Science of Porto Alegre; 🇧🇷 Porto Alegre, Rio Grande do Sul, Brazil