Vocal Warm-up and Respiratory Muscle Training

NCT02102399 | Completed Results

• 1 other identifier: U1111-1152-9129
• Study Type: interventional
• Target: 41
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to verify the effects of two speech-pathology interventions: vocal warm-up and respiratory training in teachers who work in a public school of the city of Salvador-Bahia, with or without complaints of vocal disorders. It is a preventive study and the hypothesis is that both approaches can produce positive voice changes, but the Vocal Warm-up will produce the most significant changes.

Conditions

Voice Disorders

Keywords

Voice training; Education; Voice; Faculty

Outcome Measures

Primary Outcomes (18)

• Voice Handicap Index (VHI-10)

  The voice handicap index (VHI) is a self-assessment questionnaire which quantifies the functional, physical and emotional impacts of a voice disorder on the quality of life. The VHI-10 is a reduced version and it consists of 10 questions about the severity of the voice problem perceived by the subject. It is presented as an ordinal scale (range 0-4) that indicates how frequently the subject has experienced the same situation (0 = never; 1 = almost never; 2 = sometimes; 3= almost always; 4 = always). Total VHI Score ranges from 0 (never) to 40 (always). Higher scores indicate greater voice handicap. Abnormal values \> 11.

  Baseline, 6 weeks

• Acoustic Analysis (Fundamental Frequency)

  The measurement of fundamental frequency directly reflects the rate of vibration of the vocal folds. The fundamental frequency term refers to the frequency of more occurrence of vocal fold vibration, featuring a certain production.

  Baseline, 6 weeks

• Acoustic Analysis (Jitter)

  Jitter is the perturbation cycle-to-cycle of the fundamental frequency. High levels of jitter are normally associated with pathological voice. The instability of the fundamental frequency can be attributed to changes in size, shape or firmness of the vocal folds. Normal values must be \< 0.6%.

  Baseline, 6 weeks

• Acoustic Analysis (Shimmer)

  The shimmer measures the amplitude's disturbance, e. g. how fast the amplitude changes on a sustained vowel for a few seconds. Shimmer high levels are normally associated with pathological voice. This can be attributed due to changes in size, shape or firmness of the vocal folds. Normal values \< 6.5%.

  Baseline, 6 weeks

• Acoustic Analysis (Noise)

  Noise is the analysis of aperiodic components of the sound's signal. It is an important correlate of that the human ear considers voice disorders. Normal levels \< 2.5 dB

  Baseline, 6 weeks

• Acoustic Analysis (GNE)

  Glottal to Noise Excitation ratio (GNE) is an acoustic measurement to calculate the noise in a series of pulses produced by the oscillation of the vocal folds. This parameter is based on the hypothesis that resulting pulses of vocal fold collision generate a synchronous excitation of different frequency bands. Moreover, the noise produced by the vocal folds compressed generates uncorrelated excitations. Normal levels \> 0.5 dB

  Baseline, 6 weeks

• Voice Handicap Index (VHI-10) 2

  The voice handicap index (VHI) is a self-assessment questionnaire which quantifies the functional, physical and emotional impacts of a voice disorder on the quality of life. The VHI-10 is a reduced version and it consists of 10 questions about the severity of the voice problem perceived by the subject. It is presented as an ordinal scale (range 0-4) that indicates how frequently the subject has experienced the same situation (0 = never; 1 = almost never; 2 = sometimes; 3= almost always; 4 = always). Total VHI Score ranges from 0 (never) to 40 (always). Higher scores indicate greater voice handicap. Abnormal values \> 11.

  Baseline, 6 weeks

• Acoustic Analysis (Fundamental Frequency) 2

  The measurement of fundamental frequency directly reflects the rate of vibration of the vocal folds. The fundamental frequency term refers to the frequency of more occurrence of vocal fold vibration, featuring a certain production.

  Baseline, 6 weeks

• Acoustic Analysis (Jitter) 2

  Jitter is the perturbation cycle-to-cycle of the fundamental frequency. High levels of jitter are normally associated with pathological voice. The instability of the fundamental frequency can be attributed to changes in size, shape or firmness of the vocal folds. Normal values must be \< 0.6%.

  Baseline, 6 weeks

• Acoustic Analysis (Shimmer) 2

  The shimmer measures the amplitude's disturbance, e. g. how fast the amplitude changes on a sustained vowel for a few seconds. Shimmer high levels are normally associated with pathological voice. This can be attributed due to changes in size, shape or firmness of the vocal folds. Normal values \< 6.5%.

  Baseline, 6 weeks

• Acoustic Analysis (Noise) 2

  Noise is the analysis of aperiodic components of the sound's signal. It is an important correlate of that the human ear considers voice disorders. Normal levels \< 2.5 dB

  Baseline, 6 weeks

• Acoustic Analysis (GNE) 2

  Glottal to Noise Excitation ratio (GNE) is an acoustic measurement to calculate the noise in a series of pulses produced by the oscillation of the vocal folds. This parameter is based on the hypothesis that resulting pulses of vocal fold collision generate a synchronous excitation of different frequency bands. Moreover, the noise produced by the vocal folds compressed generates uncorrelated excitations. Normal levels \> 0.5 dB

  Baseline, 6 weeks

• Change in Voice Handicap Index (VHI-10)

  The voice handicap index (VHI) is a self-assessment questionnaire which quantifies the functional, physical and emotional impacts of a voice disorder on the quality of life. The VHI-10 is a reduced version and it consists of 10 questions about the severity of the voice problem perceived by the subject. It is presented as an ordinal scale (range 0-4) that indicates how frequently the subject has experienced the same situation (0 = never; 1 = almost never; 2 = sometimes; 3= almost always; 4 = always). Total VHI Score ranges from 0 (never) to 40 (always). Higher scores indicate greater voice handicap. Abnormal values \> 11.

  Baseline, 6 weeks

• Change in Fundamental Frequency

  The measurement of fundamental frequency directly reflects the rate of vibration of the vocal folds. The fundamental frequency term refers to the frequency of more occurrence of vocal fold vibration, featuring a certain production.

  Baseline, 6 weeks

• Change in Jitter

  Jitter is the perturbation cycle-to-cycle of the fundamental frequency. High levels of jitter are normally associated with pathological voice. The instability of the fundamental frequency can be attributed to changes in size, shape or firmness of the vocal folds. Normal values must be \< 0.6%.

  Baseline, 6 weeks

• Change in Shimmer

  Shimmer measures the amplitude perturbations, e. g. how fast the amplitude changes on a sustained vowel for a few seconds. Shimmer high levels are normally associated with pathological voice. This can be attributed due to changes in size, shape or firmness of the vocal folds. Normal values \< 6.5%

  Baseline, 6 weeks

• Change in Noise

  Noise is the analysis of aperiodic components of the sound's signal. It is an important correlate of that the human ear considers voice disorders. Normal levels \< 2.5 dB

  Baseline, 6 weeks

• Change in GNE

  Glottal to Noise Excitation ratio (GNE) is an acoustic measurement to calculate the noise in a series of pulses produced by the oscillation of the vocal folds. This parameter is based on the hypothesis that resulting pulses of vocal fold collision generate a synchronous excitation of different frequency bands. Moreover, the noise produced by the vocal folds compressed generates uncorrelated excitations. Normal levels \> 0.5 dB

  Baseline, 6 weeks

Secondary Outcomes (4)

• Post-treatment Questionnaire (Voice Symptoms Improvement)

  After 6 weeks of intervention

• Post-treatment Questionnaire (Voice Clearer)

  After 6 weeks of intervention

• Post-treatment Questionnaire (Easier to Talk)

  After 6 weeks of intervention

• Post-treatment Questionnaire (Compliance With Intervention)

  After 6 weeks of intervention

Study Arms (2)

Vocal Warm-up

EXPERIMENTAL

Vocal Warm-up group performed 13 minutes of vocal warm-up exercises everyday before teaching over a course of 6 weeks, with one session exercise per day.

Behavioral: Vocal Warm-up

Respiratory Muscle Training

EXPERIMENTAL

Respiratory Muscle Training group performed 13 minutes of Respiratory Muscle Training everyday before teaching over a course of 6 weeks, with one session exercise per day.

Behavioral: Respiratory Muscle Training

Interventions

Vocal Warm-up BEHAVIORAL

Vocal Warm-up group performed 13 minutes of vocal warm-up exercises everyday before teaching over a course of 6 weeks, with one session exercise per day.

Vocal Warm-up

Respiratory Muscle Training BEHAVIORAL

Respiratory Muscle Training group performed 13 minutes of Respiratory Muscle Training everyday before teaching over a course of 6 weeks, with one session exercise per day.

Respiratory Muscle Training

Eligibility Criteria

• Age: 20 Years - 60 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Age between 20-60.
• No occurence of speech therapy simultaneously to the intervention

You may not qualify if:

• Professional voice use in another activity;
• Frequent use of alcohol and tobacco;
• Influenza and/or upper respiratory tract infections (eg, rhinitis, sinusitis, pharyngitis) during the period of participation in the research.

Sponsors & Collaborators

• Federal University of Bahia: lead
• Bahia State Secretariat of Education, Brazil: collaborator

Study Sites (1)

Federal University of Bahia

Salvador, Estado de Bahia, 40.026-010, Brazil

Location

Related Publications (1)

• Pereira LP, Masson ML, Carvalho FM. Vocal warm-up and breathing training for teachers: randomized clinical trial. Rev Saude Publica. 2015;49:67. doi: 10.1590/S0034-8910.2015049005716. Epub 2015 Oct 9.

  PMID: 26465664 DERIVED

MeSH Terms

Conditions

Voice Disorders

Interventions

Breathing Exercises

Condition Hierarchy (Ancestors)

Laryngeal Diseases; Respiratory Tract Diseases; Otorhinolaryngologic Diseases; Neurologic Manifestations; Nervous System Diseases; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Mind-Body Therapies; Complementary Therapies; Therapeutics; Exercise Movement Techniques; Physical Therapy Modalities

Limitations and Caveats

Small and not probabilistic sample; type I error; type II error; strike in the last week of the study; healthy worker effect.

Results Point of Contact

• Title: Lilian Paternostro
• Organization: Federal University of Bahia

lilian_fono@hotmail.com

+55 (71) 8191-9730

Study Officials

• Maria Lucia V Masson, PhD

  Federal University of Bahia

  PRINCIPAL INVESTIGATOR

• Lilian Paternostro, MS

  Federal University of Bahia

  STUDY CHAIR

• Fernando M Carvalho, PhD

  Federal University of Bahia

  STUDY DIRECTOR

Publication Agreements

• PI is Sponsor Employee: Yes
• Restrictive Agreement: No

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Maria Lucia Vaz Masson

Study Record Dates

• First Submitted: March 30, 2014
• First Posted: April 2, 2014
• Study Start: July 1, 2013
• Primary Completion: September 1, 2013
• Study Completion: September 1, 2013
• Last Updated: October 8, 2015
• Results First Posted: September 17, 2015

Record last verified: 2015-09

Locations

BR (1)