Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics (대한후두음성언어의학회지)

The Korean Society of Laryngology, Phoniatrics and Logopedics. (대한후두음성언어의학회)
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Effects of Semi-Occluded Vocal Tract Exercise in Patients with Functional Aphonia

반폐쇄성도훈련이 기능적 실성증 환자의 음성 개선에 미치는 효과

  • Chae, Hye Rim (Graduate School of Daegu Catholic University) ;
  • Kim, Ji sung (Graduate School of Daegu Catholic University) ;
  • Lee, Dong Wook (Department of Otorhinolaryngology-Head and Neck Surgery, Chungbuk National University College of Medicine) ;
  • Choi, Soeng Hee (Graduate School of Daegu Catholic University)
  • 채혜림 (대구가톨릭대학교 일반대학원) ;
  • 김지성 (대구가톨릭대학교 일반대학원) ;
  • 이동욱 (충북대학교 의과대학 이비인후과교실) ;
  • 최성희 (대구가톨릭대학교 일반대학원)
  • Received : 2019.05.17
  • Accepted : 2019.06.18
  • Published : 2019.06.30
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Abstract

Background and Objectives : Functional aphonia is characterized by incomplete closure of the vocal folds. Semi-occluded vocal tract exercise (SOVTE) allows smoothly vocal folds collision without damage to the vocal folds tissues to produce normal vocal intensity. The purpose of this study is to report the effect of SOVTE in patients with functional aphonia. Materials and Method : Seven patients diagnosed with functional aphonia were treated with 1-3 voice therapy sessions using voiced lip-trill, humming, Lax Vox in SOVTE. To assess the effectiveness of semi-occluded vocal tract exercise, cepstral analysis and auditory perceptual assessment were performed before and after voice therapy. Results : F0 (fundamental frequency), CPP (cepstral peak prominence) and L/H ratio (low/high spectral ratio) were significantly increased, while CPP Standard deviation, L/H ratio Standard deviation were decreased. In addition, 'Grade', 'Breathiness' and 'Asthenia' were significantly decreased in the GRBAS scale after SOVTE (p<0.05). Conclusion : In our study, SOVTE seemed to be effective to elicit voice quickly and promote vocal folds vibration without muscular effort in patients with functional aphonia.

Keywords

References

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