Σάββατο 4 Νοεμβρίου 2017

Effects of Vocal Function Exercises: A Systematic Review

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Publication date: Available online 3 November 2017
Source:Journal of Voice
Author(s): Vrushali Angadi, Daniel Croake, Joseph Stemple
ObjectivesThe purpose of the present review was to systematically analyze the evidence for the effectiveness of vocal function exercises (VFEs) in improving voice production.MethodsA systematic literature search was performed by two independent reviewers using PubMed and EBSCOHost to access relevant databases and to locate outcome studies that used VFEs as an intervention. Articles that met inclusion criteria were appraised based on the American Speech-Language and Hearing Association's levels of evidence. Effect sizes for outcomes were calculated using Hedge's g. Voice outcomes were categorized according to the five domains of voice assessment: visual perceptual analysis, acoustic analysis, aerodynamic analysis, auditory-perceptual analysis, and patient self-report measures.ResultsTwenty-one articles were included for the final appraisal. All studies demonstrated positive effects of VFEs as demonstrated by effect sizes across selected voice parameters. Effect sizes across parameters ranged from −0.59 to 1.55. None of the included studies reported adverse voice outcomes as a result of VFEs.ConclusionsOutcome studies demonstrate that VFEs are efficacious in enhancing vocal function in individuals with normal and disordered voices, presbylaryngeus, and professional voice users. The available research suggests moderate to strong evidence to support the use of VFEs for a variety of voice disorders.



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