Examinando por Materia "Voice Quality"

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    Effective interventions to improve voice quality in teachers.
    (Universidad Privada Norbert Wiener, 2018-01-27) Ramirez Yalán, Rosario Isabel; Pretell Aguilar, Rosa Maria
    Objective: To analyze and systematize the available evidence on effective interventions to improve voice quality in teachers. Materials and Methods: The study type is qualitative, and the design used was a systematic review, which aims to answer specific questions through the search for articles. The search was conducted in Pubmed, Medline, ElServier, Scielo, Portal Regional BVS, Trip, Cochrane Plus, Lilacs, EBSCO, Epistemonikos, SCOPUS. The quality of the articles was analyzed using the GRADE system, a method for evaluating the quality of evidence and the strength of recommendations. Results: The sample consisted of 14 articles, with 29% from Brazil, 22% from Germany, 14% each from Italy and Belgium, and 7% from Spain, Iran, and Finland. The study designs were 36% quasi-experimental and case-control each, 14% clinical trial, and 7% controlled randomized study and cross-sectional study. Conclusions: It is concluded that 93% of the studies show that effective interventions improve the quality of teachers' voices because of easier phonation, better vocal well-being, positive impact on vocal capacity, increased subjective vocal tension, better perceptual voice quality, perceived frequency and intensity of voice, and vocal performance. The remaining 7% found that the intervention was ineffective and emphasized the need for deeper studies with a larger sample size.