Skip to content

Comparing effects of “laryngeal manipulation” and "breathing function intervention" on voice of traditional singers

Comparing immediate and long term effects of “laryngeal manipulation” and "breathing function intervention" alone and combined on acoustic features and voice quality of traditional singers with voice complains

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT2015102524686N1
Enrollment
48
Registered
2015-11-28
Start date
2016-10-22
Completion date
Unknown
Last updated
2018-02-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Condition 1: Dysphonia. Condition 2: Voice disturbances. Hoarseness Other and unspecified voice disturbances

Interventions

Intervention 1: Laryngeal manipulation (Manual Therapy): In this intervention we would try to eliminate excessive tension of intrinsic and extrinsic muscles of larynx. Intervention 2: Breathing functi
Rehabilitation
Laryngeal manipulation (Manual Therapy): In this intervention we would try to eliminate excessive tension of intrinsic and extrinsic muscles of larynx.
Breathing function intervention: We would try to increase breath taking speed and volume of singing/speech breath support, and to teach and help maintaining of diaphragmatic breathing and to help sing
Combined intervention (laryngeal manipulation plus breathing function intervention)

Sponsors

Vice Chancellor for Research and Technology, Iran University of Medical Science
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: Inclusion criteria: * Being an adult * Having at least 4 years of experience in professional traditional singing * Having healthy respiratory system in speech * Not having history respiratory, cardiac, musculoskeletal and allergy problems * Not having history of tobacco intake at least in 5 recent years * Not having history of trauma to neck, head and larynx * Not having history of laryngeal disease such as nodule and polyp and etc. * Having chronic voice disorders * Not having temporomandibular joint that cause sensory motor malfunction * Not having hearing problems or paralysis and paresis in oral structures Exclusion criteria : * Having cold during intervention or evaluation sessions * Sudden trauma to neck and head and larynx and stomach during study * Having heavy performs that damages the larynx structure during study * Not regularly attending treatment sessions or not following exercises at home * Missing client's recorded data

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

MeasureTime frame
Acoustic features of voice. Timepoint: Before intervention, after intervention, three months after intervention. Method of measurement: Acoustic analysis via Dr speech and Praat software.;Voice Quality. Timepoint: Before intervention, after intervention, three months after intervention. Method of measurement: "GRBAS Scale" and "Consensus Auditory-Perceptual Evaluation of Voice" (CAPE-V).;Patient perception of the severity of his/her voice disorder. Timepoint: Before intervention, after intervention, three months after intervention. Method of measurement: Singing Voice Handicap Index questionnaire.;Breathing function. Timepoint: Before intervention, after intervention, three months after intervention. Method of measurement: Researcher made questionnaire.;Tension of larynx muscles. Timepoint: Before intervention, after intervention, three months after intervention. Method of measurement: Researcher made questionnaire.

Secondary

MeasureTime frame
Larynx surficial features. Timepoint: Before intervention, after intervention, three months after intervention. Method of measurement: Researcher made questionnaire.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactDr Leila Ghelichi

Iran University of medical science and Health service, School of Rehabilitation School of Rehabilita

lghelichi@gmail.com+98 21 2222 8051

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 19, 2026