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유재연,Yoo, Jae Yeon 대한후두음성언어의학회 2017 대한후두음성언어의학회지 Vol.28 No.1
This article addresses the roles of the speech language pathologist (SLP) for singers who require prompt and effective treatment when a voice problem arises. The causes of voice problem are often vocal abuse/misuse/overuse, muscle tension dysphonia and inappropriate singing technique. The SLP should conduct voice counseling and voice assessment for maintaining healthy voice of singer constantly.
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지방산으로 유발된 비알코올지방간질환 실험모델에 미치는 생간탕가미방(生肝湯加味方)의 효과
유재연,이장훈,Yoo, Jae-Yeon,Lee, Jang-Hoon 대한한방내과학회 2010 大韓韓方內科學會誌 Vol.31 No.2
Objectives : This study was designed to investigate the effects of Saenggantanggami-bang (SG) on nonalcoholic fatty liver disease. Methods : HepG2 cells were used in an in vitro model. HepG2 cells were divided into three groups. The Normal group was incubated with no fatty acid. The Control group was incubated with 1mM palmitic acid to introduce fat overloading. The PA-SG group was incubated with 1mM palmitic acid and various concentrations of Saenggantanggami-bang (SG). Cell viability and cytotoxicity were analyzed by MTT assay and LDH assay. Intracellular triglyceride (TG) levels, reactive oxygen species (ROS) levels, ATP amount, and GST activity were measured. Cell death pattern and protective effect of SG on cell death were studied by DNA fragmentation and caspase-3 intensity (western blot). Results : Compared with the Control group, cell viability of the PA-SG group significantly increased (P<0.01), cytotoxicity of the PA-SG group decreased (P<0.01), and intracellular TG levels and ROS levels of the PA-SG group decreased (P<0.05). In DNA fragmentation assay, necrotic pattern was observed and DNA fragment decreased in the PA-SG group. In western blot, apoptotic pattern was observed, caspase-3 intensity of the PA-SG group was reduced significantly, but there were no significant differences in intracellular ATP amount and GST activity between the control group and the PA-SG group. Conclusion : The results suggest that Saenggantanggami-bang can be a potential candidate for the clinical treatment of nonalcoholic fatty liver disease.
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성악전공 대학생과 일반 대학생의 /a/ 연장발성 시 음성특성 비교
유재연(Jae-Yeon Yoo),안종복(Jong-Bok Ahn),권도하(Do-Ha Kwon),정옥란(Ok-Ran Jeong) 한국언어청각임상학회 2002 Communication Sciences and Disorders Vol.7 No.2
본 연구는 65명의 성악전공 대학생(남자 27명, 여자 38명)과 80명의 일반 대학생(남자 30명, 여자 50명)을 대상으로 Dr. speech(version 4.0)를 이용하여 두 집단 간에 음향학적 측정치(Jitter, Shimmer, HNR, NNE)와 EGG 측정치(EGG Jitter, EGG Shimmer , EGG HNR, EEG NNE)에서 어떤 차이가 있는가를 알아보는 것을 목적으로 실시하였다. 그 결과 다음과 같은 연구 결과를 얻었다. 첫째, 성악전공 대학생들의 음향학적 측정치에서 Jitter치는 0.18 %, Shimmer치는 0.28 ± 0.66 %, HNR치는 27.05 ± 2.70 dB, NNE치는 - 15.51 ± 3.18 dB로 나타났고, EGG 측정에서는 EGG Jitter치는 0.19 %, EGG Shimmer치는 1.23 ± 0.78 %, EGG HNR치는 27.04 ± 2.68 dB, EGG NNE치는 - 24.17 ± 2.63 dB로 나타났다. 둘째, 일반 대학생들의 음향학적 측정치에서 Jitter치는 0.31 ± 0.11%, Shimmer치는 2.09 ± 0.74 %, HNR치는 28.81 ± 2.67 dB, NNE치는 - 11.73 ± 3.94 dB로 나타났고 EGG 측정에서는 EGG Jitter치는 0.37 ± 0.18 %, EGG Shimmer치는 1.32± 1.0 %, EGG HNR치는 32.87 ± 4.56 dB, EGG NNE치는 - 30.28 ± 4.62 dB으로 나타났다. 마지막으로, 두 집단 간에 Jitter , Shimmer , HNR, NNE, EGG Jitter , EGG HNR, EGG NNE 등에서 유의한 차이(p < .001)가 나타난 반면에, EGG Shimmer에서는 두 집단 간에 유의한 차이가 나타나지 않았다. 이상의 결과는 전문적으로 발성(가창) 훈련을 받아 온 성악 전공학생 들의 일반 대학생들에 비해 음질이 대체적으로 우수한 것을 나타내며, 더 나아가 직업적 음성 사용자 중 성악을 전공하는 사람들의 음성에 대한 규준치 확립의 필요성을 시사한다. The purposes of this study were (1) to obtain acoustic measurement s (Jitter , Shimmer, HNR, and NNE) and EGG measurement s (EGG Jitter , EGG Shimmer , EGG HNR, and EGG NNE) of 65 classical singing student s (27 males and 38 females ) and 80 ordinary college student s (30 males and 50 females ) and (2) to compare acou stic and EGG parameter s between the two groups. Dr . Speech was need to obtain acou stic measurement s and EGG measurement s, simultaneously . T he subject s sustained / a/ and acou stic and EGG measurement s were taken. T he result s were as follows : fir stly, the mean value of Jitter of clas sical singing student s was 0.18 %, that of Shimmer 1.28 ± 0.66 %, that of HNR 27.05 ± 2.70 dB, and that of NNE - 15.51 ± 3.18 dB. Secondly , the mean value of EGG Jitter of clas sical singing student s was 0.19 %, that of EGG Shimmer 1.23 ± 0.78 %, that of EGG HNR 27.04 ± 2.68 dB, and that of EGG NNE - 24.17 ± 2.63 dB. T hirdly , the mean value of Jitter of ordinary college student s was 0.31 ± 0.11 %, that of Shimmer 2.09 ± 0.74 %, that of HNR 28.81 ± 2.67 dB, and that of NNE - 11.73 ± 3.94 dB. Fourthly , the mean value of EGG Jitter of ordinary college student s was 0.37 ± 0.18 %, that of EGG Shimmer 1.32 ± 1.0 %, that of EGG HNR 32.87 ± 4.56 dB, and that of EGG NNE - 30.28 ± 4.62 dB. Finally , there was a significant difference between the two groups in Jitter , Shimmer , HNR, NNE, EGG Jitter , EGG HNR, EGG NNE (p < .001) while there was no significant difference between the two groups in EGG Shimmer.
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유재연(Yoo, Jae-Yeon),이하나(Lee, Ha-Na) 한국장애인재활협회 2018 재활복지 Vol.22 No.1
본 연구는 반폐쇄성도훈련에 기반을 둔 성대에어로빅치료(Vocal Aerobic Treatment: VAT)가 소프라노 성악가 음성개선에 미치는 영향을 알아보고자 하였다. 연구대상은 성대결절로 음성문제를 호소하는 소프라노 성악가 1명으로 연구를 진행하였다. 연구방법은 치료 전⋅후 음향학적평가와 주관적 음성평가를 실시하여 측정값을 비교하였으며, 성대에어로빅치료는 주 2회 총 32회기동안 진행하였다. 음향학적 평가는 MDVP (multi-dimensional voice program)와 VRP (voice range profile)를 사용하여 음도, 음질, 음역을 평가하였으며, 주관적 음성평가는 SVHI (singing voice handicap index)로 주관적인 음성만족도를 평가하였다. 음도 평가 결과 치료 후 소프라노 가수에 적절한 기본주파수(Fo)를 유지하였다. 음질평가 결과 주파수변동률(Jitter), 진폭변동률(Shimmer), 배음대소음비(NHR) 수치가 치료 전보다 감소하였다. 음역평가결과 음역의 범위가 넓어졌으며 반음의 개수가 30개에서 35개로 증가하였다. 주관적 음성평가는 설문 보고 후 획득한 총 점수를 문항수로 나눈 결과 3.6점에서 0.6점으로 감소하였으며, 본인이 느끼는 음성문제의 정도가 경미하다고 보고하였다. 이러한 결과를 정리해보면 성대에어로빅 치료는 성악가 음성개선에 효과적인 것으로 사료된다. 그러나 본 연구는 소프라노 성악가 1명을 대상으로 한 성대에어로빅치료의 치료 효과에 관한 사례연구로 향후 더 많은 성악가를 대상으로 효과에 대한 연구가 이루어져야 할 것이다. 또한 성악가뿐만 아니라 다양한 직업적 음성사용자를 위한 음성관리 및 음성치료프로그램에 관한 후속 연구가 필요할 것이다. The purpose of this study is to investigate the impact of semi-closed vocal training-based Vocal Aerobic Treatment on the voice improvement of soprano. Study subject was one soprano who appealed to the suffering of her voice problem due to vocal cord nodule. A study method of conducting pre/post acoustic evaluation and subjective voice evaluation to compare the measures was used; Vocal Aerobic Treatment was carried out twice a week for a total of 32 session. In the acoustic evaluation, MDVP (multi-dimensional voice program) and VRP (voice range profile) were used to evaluate the pitch, voice quality, and voice range; in the subjective voice evaluation, SVHI (singing voice handicap index) was used to assess voice satisfaction. As a result of the pitch evaluation, the soprano maintained a proper Fo. As a result of the voice quality evaluation, the jitter, shimmer, and the noise harmonic ratio numbers decreased compared to the numbers shown before the treatment. As a result of the voice range evaluation, the scope of the range was broadened, with the number of semitone increasing from 30 to 35. As for the subjective voice evaluation, the result of the total score obtained after the survey report divided by the number of questions showed a decrease from 3.6 to 0.6. The soprano herself reported of having a minor extent of a voice problem. The summary of the above results reflects that Vocal Aerobic Treatment is useful in the voice improvement of vocalists However, as this study is case research regarding the Vocal Aerobic Treatment effect on one soprano, further research on the treatment effect covering many other vocalists is necessary. Also, there is a need for follow-up studies regarding voice management and voice treatment program on not only the vocalists but also the voice users in many other professions.
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