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:: Volume 22, Issue 3 (10-2013) ::
aud 2013, 22(3): 52-62 Back to browse issues page
Voice-based laryngeal manual therapy in treatment of hyperfunctional voice disorders: A preliminary study
Abolfazl Salehi 1, Farzad Izadi2, Laya Gholami Tehrani1, Mehdi Rahgozar3
1- Department of Speech therapy, University of Social Welfare and Rehabilitation, Tehran, Iran
2- Ear, Nose, Throat, Head & Neck Research Center, Hazrate Rassul-e-Akram Hospital, Tehran University of Medical Sciences, Tehran, Iran
3- Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Abstract:   (7882 Views)

Background and Aim: An imbalance between phonatory subsystems may lead to disturbing phonatory muscular balance and consequently voice disorders. Based on theoretical issues, criterion-based laryngeal manual therapy, as a novel treatment method which is supported by classical laryngeal manual therapy, can improve voice quality using manual maneuvers combined with phonatory tasks. The present study aimed to report the treating effects of this method on hyperfunctional voice disorders.

Methods: Twenty adult participants with hyperfunctional voice disorders by the least three months history of voice disorder were selected. The participant’s voices were assessed multidimensionally using acoustic, audio-pecreptual and stroboscopic assessments before and after treatment.

Results: There were a decrease in jitter (p=0.003) and shimmer (p<0.001) and also, increase in harmonic-to-noise ratio (HNR) (p<0.001) of vowel /a/ after treatment. Besides, there was an increase in harmony to noise ratio (p=0.009) and decrease in jitter (p=0.020) of vowel /i/, too. There were not significant changes in shimmer amount of vowel /i/ (p=0.170) after treatment. There were highly significant changes in all aspects of audio-perceptual (p<0.001) and videostroboscopic (p<0.001) parameters.

Conclusion: Using voice-based laryngeal manual therapy can be a treatment method in handling hyperfunctional voice disorders.
Keywords: Criterion-based laryngeal manual therapy, hyperfunctional voice disorders, audio-perceptual assessment, acoustic, stroboscopy
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Type of Study: Research |
Received: 2012/08/11 | Accepted: 2012/10/10 | Published: 2013/10/12
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Volume 22, Issue 3 (10-2013) Back to browse issues page
شنوایی شناسی - دانشگاه علوم پزشکی تهران Bimonthly Audiology - Tehran University of Medical Sciences
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