{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,12]],"date-time":"2025-09-12T18:13:06Z","timestamp":1757700786995},"reference-count":51,"publisher":"Universidad Nacional de Colombia","issue":"3","license":[{"start":{"date-parts":[[2018,7,1]],"date-time":"2018-07-01T00:00:00Z","timestamp":1530403200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. Fac. Med."],"abstract":"<jats:p>Introducci\u00f3n.\u00a0La amplificaci\u00f3n vocal se ha utilizado como una herramienta para prevenir des\u00f3rdenes de voz en profesores.Objetivos. Conocer los cambios reportados sobre el comportamiento vocal cuando los profesores utilizan sistemas de amplificaci\u00f3n vocal y hacer una comparaci\u00f3n entre el antes y el despu\u00e9s de su uso.Materiales\u00a0y m\u00e9todos.\u00a0Se realiz\u00f3 una revisi\u00f3n de art\u00edculos en cuatro bases de datos y se seleccionaron 11 bajo criterios de inclusi\u00f3n y exclusi\u00f3n: 3 presentaron un nivel de evidencia IIb, mientras que 8, IV. Se analiz\u00f3 la informaci\u00f3n de los art\u00edculos para recolectar datos sobre los efectos en el comportamiento vocal a nivel perceptivo y ac\u00fastico frente al uso de amplificaci\u00f3n vocal.Resultados.\u00a0Los participantes tuvieron una reducci\u00f3n en la intensidad y en la frecuencia fundamental con mayores efectos en la poblaci\u00f3n sin desorden de voz. Hubo una disminuci\u00f3n significativa de la dosis de distancia a diferencia de la dosis de ciclo. En los cuestionarios se infiri\u00f3 un descenso en s\u00edntomas, reducci\u00f3n de la carga vocal y mejora en la comunicaci\u00f3n.Conclusi\u00f3n.\u00a0Los amplificadores de voz sirven para prevenir trastornos de la voz. Investigaciones futuras deber\u00e1n manejar un rigor investigativo en los niveles de evidencia y un dise\u00f1o de estudio que permita obtener resultados consistentes en diferentes usuarios de la voz.<\/jats:p>","DOI":"10.15446\/revfacmed.v66n3.58517","type":"journal-article","created":{"date-parts":[[2018,10,1]],"date-time":"2018-10-01T19:40:36Z","timestamp":1538422836000},"page":"485-493","source":"Crossref","is-referenced-by-count":4,"title":["Amplificaci\u00f3n vocal en el \u00e1mbito ocupacional educativo: una revisi\u00f3n de la literatura"],"prefix":"10.15446","volume":"66","author":[{"given":"\u00c1ngela Patricia","family":"Atar\u00e1-Paraquive","sequence":"first","affiliation":[]},{"given":"Luisa Fernanda","family":"\u00c1ngel-Gordillo","sequence":"additional","affiliation":[]}],"member":"6146","published-online":{"date-parts":[[2018,7,1]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","unstructured":"Williams NR. 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