Vocal Economy in Vocally Trained and Untrained Female Subjects

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dc.contributor.authorMaster, Suely
dc.contributor.authorGuzman, Marco
dc.contributor.authorDowdall, Jayme
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:30:08Z
dc.date.available2014-05-27T11:30:08Z
dc.date.issued2013-08-08
dc.description.abstractObjectives: Vocally trained actresses are expected to have more vocal economy than nonactresses. Therefore, we hypothesize that there will be differences in the electroglottogram-based voice economy parameter quasi-output cost ratio (QOCR) between actresses and nonactresses. This difference should remain across different levels of intensity. Methods: A total of 30 actresses and 30 nonactresses were recruited for this study. Participants from both groups were required to sustain the vowels /a/, /i/, and /u/, in habitual, moderate, and high intensity levels. Acoustic variables such as sound pressure level (SPL), fundamental frequency (F0), and glottal contact quotient (CQ) were obtained. The QOCR was then calculated. Results: There were no significant differences among the groups for QOCR. Positive correlations were observed for QOCR versus SPL and QOCR versus F0 in all intensity levels. Negative correlation was found between QOCR and CQ in all intensity levels. Considering the differences among intensity levels, from habitual to moderate and from moderate to loud, only the CQ did not differ significantly. The QOCR, SPL, and F0 presented significant differences throughout the different intensity levels. Conclusion: The QOCR did not reflect the level of vocal training when comparing trained and nontrained female subjects in the present study. Both groups demonstrated more vocal economy in moderate and high intensity levels owing to more voice output without an increase in glottal adduction. © 2013 The Voice Foundation.en
dc.identifierhttp://dx.doi.org/10.1016/j.jvoice.2013.05.005
dc.identifier.citationJournal of Voice.
dc.identifier.doi10.1016/j.jvoice.2013.05.005
dc.identifier.issn0892-1997
dc.identifier.issn1873-4588
dc.identifier.scopus2-s2.0-84880995687
dc.identifier.urihttp://hdl.handle.net/11449/76240
dc.identifier.wosWOS:000327146200006
dc.language.isoeng
dc.relation.ispartofJournal of Voice
dc.relation.ispartofsjr0,735
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectActors
dc.subjectContact quotient
dc.subjectImpact stress
dc.subjectVocal economy
dc.subjectVocal loading
dc.titleVocal Economy in Vocally Trained and Untrained Female Subjectsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.orcid0000-0001-8428-7501[1]

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