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http://hdl.handle.net/10773/7065
Title: | Effects of the Menstrual Cycle and Oral Contraception on Singers' Pitch Control |
Author: | Lã, FMB Sundberg, J. Howard, D.M. Sá-Coutro, P. Freitas, A. |
Keywords: | Intonation Vibrato rate Vibrato extent Menstrual cycle Oral contraceptive pill |
Issue Date: | Dec-2012 |
Publisher: | American Speech-Language-Hearing Association |
Abstract: | Purpose: Difficulties with intonation and vibrato control during the menstrual cycle have been reported by singers; however, this phenomenon has not yet been systematically investigated. Method: A double-blind randomized placebo-controlled trial assessing effects of the menstrual cycle and use of a combined oral contraceptive pill (OCP) on pitch control in singing is presented. Audio-electrolaryngograph recordings were made and blood samples were taken from 9 singers in each of the 3 phases of the menstrual cycle both under the placebo and the OCP conditions for a total of 6 months. Participants sang an exercise consisting of an ascending octave followed by a descending major triad, starting on pitches F4 and B4. Pitch control was assessed in terms of the octave’s deviations from pure intonation and of the vibrato rate and extent. Results: Significant differences were found between the 3 phases of the cycle regarding octave size only for pitch F5 during OCP use. Significant vibrato rate differences between placebo and OCP conditions were found only for pitch F5. Conclusion: OCP use may have an effect on pitch control in singers. Possible explanations point to a complex interaction between hormonal milieu and pitch control, enhancing the need for longitudinal studies. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/7065 |
DOI: | 10.1044/1092-4388(2011/10-0348) |
ISSN: | 1558-9102 |
Appears in Collections: | INETmd - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Lã_et_al_2012_JSLHR.pdf | Documento principal | 593.84 kB | Adobe PDF |
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