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|title: ||Oral contraceptive pill containing drospirenone and the professional voice: An electrolaryngographic analysis|
|authors: ||Lã, FMB|
Howard, D. M.
Davidson, J. W.
Jones, G. L.
|keywords: ||Combined oral contraceptive pill|
sex steroid hormones
|issue date: ||Jan-2009|
|publisher: ||Informa Healthcare|
|abstract: ||Few studies have been concerned with the effects of combined oral contraceptive pills (OCP) on those who use their voices
as a tool of trade. A cohort study involving 20 female professional voice users was carried out assessing irregularity of vocal
fold vibration, based on: 1) period-to-period frequency peaks (CFx), and 2) period-to-period amplitude peaks (CAx) in the
cycle-to-cycle excitation of the vocal tract. These vocal measures and blood samples were collected at three points of the
menstrual cycle, for both natural and OCP cycles. No significant differences were found in vocal parameters assessed
between the natural and OCP cycles. The intake of this OCP was not found to have a systematic effect on the vocal
parameters studied. Based on these results the modern OCP preparations can be considered safe medications which do not
have a negative effect on voice quality in professional voice users.|
|publisher version/DOI: ||http://dx.doi.org/10.1080/14015430802538879|
|source: ||Logopedics Phoniatrics Vocology|
|appears in collections||INETmd - Artigos|
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