Effect of caffeine on the vocal folds: a pilot study

1999 ◽  
Vol 113 (4) ◽  
pp. 341-345 ◽  
Author(s):  
S. Akhtar ◽  
G. Wood ◽  
J. S. Rubin ◽  
P. E. O'Flynn ◽  
P. Ratcliffe
Keyword(s):  
Pilot Study ◽  
Scientific Evidence ◽  
Voice Quality ◽  
Voice Disorders ◽  
Vocal Folds ◽  
Medical Personnel ◽  
Blood Levels ◽  
Full Study ◽  
Professional Voice Users

AbstractCaffeine is considered to be a dehydrating agent with detrimental effects on the quality of voice of persons ingesting it. This has led medical personnel dealing with voice disorders, especially in the case of professional voice users, to give advice against the use of caffeine. Yet this is an anecdotal truth as an extensive Medline literature search did not reveal any scientific evidence of caffeine being proven to have adverse effects on the vocal folds. We, therefore, initiated this pilot study to ascertain the connection between caffeine and voice quality on a laboratory basis. Two hundred and fifty mg of caffeine were provided to eight volunteers in tablet form, and blood levels along with laryngograph readings were recorded to document the changes produced. Analysing the irregularities of frequencies in a) free speech b) a reading passage and c) singing ‘Happy Birthday’, substantial changes were seen to authenticate the fact that caffeine does produce alterations in voice quality but these alterations have considerable intrasubject variability. A full study with wider parameters is to be performed on this subject as we consider it to be of importance in the management of voice disorders.

Interaction of Speech Coders and Atypical Speech II

2002 ◽  
Vol 45 (4) ◽  
pp. 689-699 ◽  
Author(s):  
Donald G. Jamieson ◽  
Vijay Parsa ◽  
Moneca C. Price ◽  
James Till
Keyword(s):  
Communication Systems ◽  
Speech Rate ◽  
Voice Quality ◽  
Voice Disorders ◽  
Normal Hearing ◽  
Speech Quality ◽  
Degraded Speech ◽  
Before And After ◽  
Subband Processing

We investigated how standard speech coders, currently used in modern communication systems, affect the quality of the speech of persons who have common speech and voice disorders. Three standardized speech coders (GSM 6.10 RPELTP, FS1016 CELP, and FS1015 LPC) and two speech coders based on subband processing were evaluated for their performance. Coder effects were assessed by measuring the quality of speech samples both before and after processing by the speech coders. Speech quality was rated by 10 listeners with normal hearing on 28 different scales representing pitch and loudness changes, speech rate, laryngeal and resonatory dysfunction, and coder-induced distortions. Results showed that (a) nine scale items were consistently and reliably rated by the listeners; (b) all coders degraded speech quality on these nine scales, with the GSM and CELP coders providing the better quality speech; and (c) interactions between coders and individual voices did occur on several voice quality scales.

scholarly journals Impact of subclinical mental disorders of voice function and quality of life in voice-speaking professions during the COVID-2019 pandemic

2021 ◽  
pp. 47-53
Author(s):  
Iryna O. Sinaiko ◽  
Vasyl I. Troyan ◽  
Elena V. Lobova ◽  
Veronica M. Kryshtal
Keyword(s):  
Quality Of Life ◽  
Mental Disorders ◽  
Positive Relationship ◽  
Depression Scale ◽  
Voice Disorders ◽  
Vocal Folds ◽  
Anxiety And Depression ◽  
Perceptual Assessment ◽  
The Voice

Objective: To investigate the risk of mental distress during the COVID-19 pandemic in individuals of the voice-speech professions and the possibility of its impact on voice function and quality of life. Materials and Methods: The study involved 33 people of voice-speech professions who were treated at the University Clinic of Zaporizhzhia State Medical University in 2020. The presence of mental disorders was determined by questionnaires using the hospital anxiety and depression scale (HADS). The patients were divided into 2 groups, depending on the absence and presence of significantly expressed symptoms. A specialized phoniatric examination using functional loads (measuring the time of maximum phonation (PMF), perceptual assessment of the voice according to the GRBAS scale), videostroboscopy of the larynx were carried out. The assessment of the mental impact of voice disorders on the quality of life was carried out according to the Voice Handicap Index (VHI) questionnaire. The statistical significance of the comparative indicators and the connection of their changes were established using the Spearman's rank correlation coefficient. Results: It was found that among the surveyed 33 people, 22 patients (group 1) had subclinical anxiety and depression, and 11 (group 2) had no significant symptoms. Patients with subclinically severe mental disorders (n = 22) showed a significant increase in the emotional indicator by 85.37% (p≤0.01). A high positive relationship was found between subclinical levels of anxiety and depression and disturbances in the phonatory cycle of the larynx. When conducting a Spearman correlation analysis between the data of perceptual assessment of the voice according to the GRBAS system, data of video stroboscopy of the larynx, indicators of anxiety and depression, and the results of the VHI questionnaire, a positive relationship of a high degree was established between the level of anxiety and vibratory insufficiency of the vocal folds (rs=0.95; p≤0.05), negative with the Navy (rs=-0.59; p≤0.05), as well as physical (rs=0.75; p≤0.05) and emotional (rs=0.79; p≤0.05) components of average quality of life. The data obtained indicate a significant effect of subclinical disorders of the mental state on impaired voice function and the emotional component of the quality of life in persons of vocal-speech professions. Conclusions: Screening of mental health in persons of voice-speech professions together with a baseline assessment of voice function and quality of life are important steps for monitoring potential voice disorders and the formation of risk groups in order to carry out preventive and therapeutic measures for voice disorders.

scholarly journals A Comparison of Quality of Life in Adults With Voice Disorders Before and After Voice Therapy

2019 ◽  
Vol 42 (2) ◽  
pp. 30-37
Author(s):  
Tipwaree Aueworakhunanan ◽  
Kalyanee Makarabhirom ◽  
Dechavudh Nityasuddhi
Keyword(s):  
Quality Of Life ◽  
Acoustic Analysis ◽  
Voice Quality ◽  
Voice Disorders ◽  
Voice Handicap Index ◽  
Voice Therapy ◽  
Therapy Program ◽  
Before And After ◽  
The Voice

Background: Previous studies have documented the effectiveness of voice therapy in terms of voice quality outcomes rather than quality of life outcomes. Objective: To compare the quality of life among patients with voice disorders, before and after voice therapy. Methods: Thirty-six patients with voice disorders who visited the Speech Clinic at Ramathibodi Hospital from March 2013 to January 2015 were enrolled. Thirty minutes per session within 10 weeks period of voice therapy program were used. The voice therapy approaches included direct and indirect therapy. The outcomes of this study were measured using Dr. Speech software version 5 for acoustic analysis and the Voice Handicap Index in Thai version for quality of life. Data was analyzed by descriptive and inferential statistics (Paired t test). Results: The total participants were 36 patients with a mean age of 51.31 years. They were divided to 4 groups according to the causes of voice disorders that were 18 patients for structural cause, 8 patients for functional cause, 6 patients for neurological cause, and 4 patients for inflammatory cause. The results for both voice quality and quality of life after voice therapy improved and showed statistically significant differences (P < .05). The patients with all causes of voice disorders were statistically significant differences in total the Voice Handicap Index scores (P < .05). Moreover the structural causes group exhibited statistically significant differences in all subscales (P < .05) but the others causes groups were not statistically significant differences in emotional subscale for functional causes, physical subscale for neurological causes, and functional subscale for inflammatory cause (P > .05) Conclusions: Voice therapy might be an effective treatment to decrease the severity of voice disorders in role of voice quality and quality of life, especially voice disorders from structural causes.

Correlation of the Iranian Voice Quality of Life Profile (IVQLP) with Acoustic Measurements across Three Common Voice Disorders

2018 ◽  
Vol 32 (4) ◽  
pp. 514.e7-514.e11 ◽  
Author(s):  
Ali Dehqan ◽  
Ronald C. Scherer ◽  
Fariba Yadegari ◽  
Gholamali Dashti
Keyword(s):  
Quality Of Life ◽  
Voice Quality ◽  
Voice Disorders ◽  
Acoustic Measurements

scholarly journals 3D-FV-FE Aeroacoustic Larynx Model for Investigation of Functional Based Voice Disorders

2021 ◽  
Vol 12 ◽  
Author(s):  
Sebastian Falk ◽  
Stefan Kniesburges ◽  
Stefan Schoder ◽  
Bernhard Jakubaß ◽  
Paul Maurerlehner ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Vocal Tract ◽  
Voice Disorders ◽  
Vocal Folds ◽  
Clinical Analysis ◽  
Sound Signal ◽  
Glottal Insufficiency ◽  
Underlying Mechanisms ◽  
High Level

For the clinical analysis of underlying mechanisms of voice disorders, we developed a numerical aeroacoustic larynx model, called simVoice, that mimics commonly observed functional laryngeal disorders as glottal insufficiency and vibrational left-right asymmetries. The model is a combination of the Finite Volume (FV) CFD solver Star-CCM+ and the Finite Element (FE) aeroacoustic solver CFS++. simVoice models turbulence using Large Eddy Simulations (LES) and the acoustic wave propagation with the perturbed convective wave equation (PCWE). Its geometry corresponds to a simplified larynx and a vocal tract model representing the vowel /a/. The oscillations of the vocal folds are externally driven. In total, 10 configurations with different degrees of functional-based disorders were simulated and analyzed. The energy transfer between the glottal airflow and the vocal folds decreases with an increasing glottal insufficiency and potentially reflects the higher effort during speech for patients being concerned. This loss of energy transfer may also have an essential influence on the quality of the sound signal as expressed by decreasing sound pressure level (SPL), Cepstral Peak Prominence (CPP), and Vocal Efficiency (VE). Asymmetry in the vocal fold oscillations also reduces the quality of the sound signal. However, simVoice confirmed previous clinical and experimental observations that a high level of glottal insufficiency worsens the acoustic signal quality more than oscillatory left-right asymmetry. Both symptoms in combination will further reduce the quality of the sound signal. In summary, simVoice allows for detailed analysis of the origins of disordered voice production and hence fosters the further understanding of laryngeal physiology, including occurring dependencies. A current walltime of 10 h/cycle is, with a prospective increase in computing power, auspicious for a future clinical use of simVoice.

Using Photovoice as a method for assessing the quality of life of individuals impacted by gynecologic malignancies: A pilot study

2010 ◽  
Author(s):  
Megan Lipe ◽  
Deidre Pereira ◽  
Stacy Dodd ◽  
Tim Sannes ◽  
Michelle Bishop ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Pilot Study ◽  
Gynecologic Malignancies

HOW STUDENTS DEFINE THEIR SUCCESS: A RESEARCH STUDY

2020 ◽  
Author(s):  
Max Ullrich ◽  
David S. Strong
Keyword(s):  
Pilot Study ◽  
Engineering Students ◽  
Research Study ◽  
Survey Instrument ◽  
Undergraduate Engineering ◽  
Diversity And Inclusion ◽  
Full Study ◽  
Definition Of Success ◽  
Definition Of ◽  
Diverse Groups

How undergraduate engineering students define their success and plan for their future differs notably amongst students. With a push for greater diversity and inclusion in engineering schools, it is valuable to also better understand the differences in these areas among different students to allow institutions to better serve the needs of these diverse groups.  The purpose of this research study is to explore students’ definition of success both in the present and projecting forward 5 to 10 years, as well as to understand to what level students reflect on, and plan for, the future. The proposed survey instrument for the pilot stage of this research includes 56 closed-ended questions and 3 open-ended questions. Evidence for the validity of the research instrument is established through a mixed-method pilot study. This paper will discuss the survey instrument, the pilot study, and outline plans for the full study.

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