]>
IRCT20151025024686N2 IRCT 2020-10-04 Iran University of Medical Sciences glottal closure improvement in Muscle Tension dysphonia Investigating the effect of voice therapy based on glottal closure improvement in singers with Muscle Tension dysphonia 2020-10-05 anticipated 20 Complete https://irct.ir/trial/43548 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Permuted block randomization method with two blocks will be used. Considering sample size of 20 subjects, 10 double blocks will be generated using www.sealedenvelope.com website. Concealing of randomization will be performed using secret codes in a pocket. Subject will receive a pocket when entering the study and based on the code in the pocket will be divided to certain group, Blinding description: Therapists and subjects will be blind to the grouping of subjects. Pocket concealment was used to make participants and therapist blind to the grouping. Judges will also be blind to the grouping of subjects and also will not be aware of the phases that the voice and video samples belong to (before or after treatment). For this purpose the assessment results including voice and the video samples of participants' performance played for judges without name, study phase and grouping. 3 Condition 1: Dysphonia. Condition 2: Voice disturbances. Intervention 1: Intervention group: This group will receive laryngeal manual therapy performed by Mathieson LMT method. Also exercises of "voice therapy based on glottal closure improvement" is provided to these participants.َ Assessment and treatment is continued for nine weeks and participants will have two 30-minutes sessions each week. Vocal assessments are performed before, after and two weeks after treatment ending. Totally participants will have 3 assessment sessions and 10 treatment sessions. Intervention 2: Control group: This group will receive laryngeal manual therapy plus sham therapy for ten sessions. Laryngeal manual therapy is performed with Mathieson LMT method. In Sham therapy some information about larynx structure, voicing mechanism and laryngeal pathologies is provided. Assessment and treatment is continued for nine weeks and participants will have two 30-minutes sessions each week. Vocal assessments are performed before, after and two weeks after treatment ending. Totally participants will have 3 assessment sessions and 10 treatment sessions. No - There is not a plan to make this available Justification or reason for not sharing IPD is No more information.
public Nassim Ahmadi
Iran University of Medical Science, School of Rehabilitation, Nezam Street, Shahid Shah Nazari Street, Madar Square, Mirdamad Blv.
Tehran Iran (Islamic Republic of) 1545913487 +98 21 2222 8051 nassim.slp@gmail.com Iran University of Medical Sciences scientific Dr Farhad Torabinejad
Iran University of Medical Science, School of Rehabilitation, Nezam Street, Shahid Shah Nazari Street, Madar Square, Mirdamad Blv, Tehran
Tehran Iran (Islamic Republic of) 1545913487 +98 21 2222 8051 rehab@iums.ac.ir Iran University of Medical Sciences Iran (Islamic Republic of) Iran (Islamic Republic of) at least 4 years of professional singing experience history of voice disorder during last month diagnosed with primary muscle tension dysphonia (MTD) 18 years 45 years Male history of allergy, laryngeal blunt trauma, head injury and phonosurgery hearing impairment being smoker R49.0 R49.8 Dysphonia Other and unspecified voice disturbances Rehabilitation Placebo Intervention group: This group will receive laryngeal manual therapy performed by Mathieson LMT method. Also exercises of "voice therapy based on glottal closure improvement" is provided to these participants.َ Assessment and treatment is continued for nine weeks and participants will have two 30-minutes sessions each week. Vocal assessments are performed before, after and two weeks after treatment ending. Totally participants will have 3 assessment sessions and 10 treatment sessions. Control group: This group will receive laryngeal manual therapy plus sham therapy for ten sessions. Laryngeal manual therapy is performed with Mathieson LMT method. In Sham therapy some information about larynx structure, voicing mechanism and laryngeal pathologies is provided. Assessment and treatment is continued for nine weeks and participants will have two 30-minutes sessions each week. Vocal assessments are performed before, after and two weeks after treatment ending. Totally participants will have 3 assessment sessions and 10 treatment sessions. Acoustic measures. Timepoint: Before intervention, after intervention, two weeks after intervention. Method of measurement: Acoustic analysis using Praat software. Vocal fold closed quotient. Timepoint: Before intervention, after intervention, two weeks after intervention. Method of measurement: Electroglottography. Voice Quality. Timepoint: Before intervention, after intervention, two weeks after intervention. Method of measurement: Auditory-Perceptual Rating Instrument for the Operatic Singing Voice( EAI scale). Singing voice handicap. Timepoint: Before intervention, after intervention, two weeks after intervention. Method of measurement: Persian version of Singing voice handicap index. Stroboscopic observational indices. Timepoint: Before intervention, after intervention, two weeks after intervention. Method of measurement: Voice-Vibratory Assessment With Laryngeal Imaging (VALI) Form. Iran University of Medical Sciences Approved 2019-11-04 Ethnic committee of Iran University of medical science Iran University of Medical Science,Hemmat highway, Tehran, Iran. تهران Tehran Iran (Islamic Republic of)