Elementary School Teachers' Vocal Dose: Muscle Bioenergetics and Training Implications

Smith, A. L.; Sandage, Mary J.; Pascoe, David D.; Plexico, Laura W.; Lima, Italo R.; Cao, Guanqun

doi:10.1044/2016_jslhr-s-16-0193

Cited by 14 publications

(2 citation statements)

References 25 publications

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“…4 There is an emerging body of work that has applied the temporal constructs of bioenergetic substrate utilization to known voicing "on" and "off" intervals in physical education teachers and classroom teachers. [5][6][7] Given that voiced intervals during connected speech in ecologically valid contexts, as determined via voice dosimetry, were overwhelmingly less than 3 seconds in length, 5 it has been hypothesized that the intrinsic laryngeal skeletal muscles engaged for phonation are largely reliant on anaerobic metabolism. This observation would be consistent with the limited cadaver muscle fiber typing evidence indicating a higher percentage of Type II muscle fibers in the all of the intrinsic laryngeal skeletal muscles except for the PCA.…”

Section: Bioenergetic Profilesmentioning

confidence: 99%

Exercise Science and the Vocalist

Johnson

Sandage

2021

Journal of Voice

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The application of exercise science training knowledge has been of growing interest to voice professionals. This tutorial, derived from the authors' invited presentations from the "Exercise and the Voice" Special Session at the 2018 Voice Foundation Symposium, proposes a foundational theoretical structure based in exercise science, clarifies the wide range of variables that may influence voice training, and summarizes our present understanding of voice physiology from the perspective of muscle training. The body of literature on voice exercise was then analyzed from the perspective of this framework, identifying what we currently know and what we still have yet to learn.

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Section: Bioenergetic Profilesmentioning

confidence: 99%

Exercise Science and the Vocalist

Johnson

Sandage

2021

Journal of Voice

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“…Las IIb son las más veloces pero son menos eficientes debido a la cantidad de energía necesaria por unidad motora y al metabolismo que emplean para conseguirla. Mientras tanto, aquellas tipo IIa se encuentran en una posición intermedia entre las tipo I y las tipo IIb y se adaptan positivamente ante el entrenamiento; aumentando su capacidad oxidativa [14]. Sin duda alguna, los músculos que participan en los procesos de respiración, fonación y resonancia pueden ser examinados teniendo en cuenta el tipo de fibras que los componen [15][16][17][18][19][20].…”

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Fisiología del ejercicio en la práctica de la vocología colombiana

Aguirre

2020

Rev. Investig. Innov. Cienc. Salud

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En los últimos años, la vocología ha prestado un interés particular a la investigación y aplicación clínica de principios –basados en la ciencia– que permitan maximizar el aprendizaje y el control motor asociados al funcionamiento de la voz. El proceso de producción vocal ocurre gracias a la acción coordinada de los subsistemas de respiración, fonación y resonancia. Estos, a su vez, deben su operatividad a la activación de diversos músculos que parecen comportarse de forma similar a aquellos que componen las extremidades. Teniendo esto en cuenta, los principios del ejercicio que han demostrado efectividad para mejorar la fuerza y resistencia de la musculatura de las extremidades podrían aplicarse al entrenamiento de la voz. En primer lugar, en este documento se presentan algunos aspectos funcionales del tejido muscular, describiendo las fibras musculares tipo I y II y puntualizando en la distribución de dichas fibras en la musculatura que hace parte de los subsistemas de la función vocal. En segundo lugar, se exponen las adaptaciones fisiológicas derivadas del ejercicio (acondicionamiento) así como de la degeneración propia de la inactividad (desacondicionamiento). Posteriormente, se hace una explicación el enfoque de ejercitación de resistencia progresiva junto a los cinco principios que lo definen, concentrada en su aplicación a la vocología. Finalmente, se argumenta la necesidad de incluir la ciencia del ejercicio en la práctica e investigación en vocología en el contexto colombiano a la luz de algunos reportes nacionales disponibles hasta la fecha.

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Which teachers are most at risk for voice disorders? Individual factors predicting vocal acoustic parameters monitored in situ during a workweek

Remacle

Lefèvre

2021

Int Arch Occup Environ Health

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Purpose: To identify the factors affecting teachers' vocal acoustic parameters, with the aim of detecting individuals at risk of phonotrauma. Method:The voicing time, voice sound pressure level [SPL] and fundamental frequency [fo] of 87 teachers were measured during one workweek using a voice dosimeter. We retrospectively investigated the impact of 10 factors (gender, age, teaching experience, teaching level, tobacco, gastro-esophageal problems, nonoccupational voice activity, voice education, past voice problems, and biopsychosocial impact of voice problems measured using the Voice Handicap Index [VHI]) on each voice parameter.Results: None of the above factors affected voicing time or SPL. fo depended significantly on gender, teaching level, nonoccupational voice activity and VHI score. Specifically, fo was higher in women (Δ = 69 Hz), in individuals without nonoccupational voice activities (Δ = 11 Hz), and in individuals with a lower VHI score (increase of 0.7 Hz for each additional point). For females, post hoc comparisons revealed a substantial impact of teaching level on fo: university instructors had deeper voices than kindergarten (Δ = 66 Hz), elementary (Δ = 52 Hz), or secondary teachers (Δ = 41 Hz).Conclusions: Since higher fo increases the mechanical stress related to vocal fold vibration, the screening and prevention of phonotrauma should focus primarily on women, particularly those who teach at lower levels, and teachers with more self-rated voice problems. The lower fo of teachers who engage in nonprofessional voice activities may suggest acute inflammation or muscle fatigue due to voice overload.

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Elementary School Teachers' Vocal Dose: Muscle Bioenergetics and Training Implications

Abstract: Knowledge of probable intrinsic laryngeal skeletal-muscle bioenergetics requirements could inform new interdisciplinary considerations for voice habilitation and rehabilitation.

Cited by 14 publications

References 25 publications

Exercise Science and the Vocalist

Exercise Science and the Vocalist

Fisiología del ejercicio en la práctica de la vocología colombiana

Which teachers are most at risk for voice disorders? Individual factors predicting vocal acoustic parameters monitored in situ during a workweek

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