well.. I've never been on the pill.. but.. hmm....
(posted on vocalist)
Obstetrics & Gynecology 2003;101:773-777
© 2003 by The American College of Obstetricians and Gynecologists
ORIGINAL RESEARCH
Do Oral Contraceptives Improve Vocal Quality? Limited Trial on Low-
Dose Formulations
Ofer Amir, PhD, Tal Biron-Shental, MD, Chava Muchnik, PhD and Liat
Kishon-Rabin, PhD
From the Department of Communication Disorders, Sackler Medical
School, Tel-Aviv University, Tel-Aviv; and the Department of
Obstetrics and Gynecology, Sapir Medical Center, Kfar-Saba, Israel.
Address reprint requests to: Ofer Amir, PhD, Sheba Medical Center,
Department of Communication Disorders, Tel-Hashomer 52621, Israel; E-
mail: oferamir@post.tau.ac.il.
OBJECTIVE: To evaluate the effect of low-dose monophasic oral
contraceptives on female vocal quality.
METHODS: Acoustic voice parameters of six women who use oral
contraceptives and six women who do not were evaluated repeatedly
during the menstrual cycle. Frequency and amplitude variations were
measured using a computerized voice analysis program. Repeated-
measures analysis of variance was performed to test differences
between groups for each acoustic voice parameter.
RESULTS: Vocal stability among the women who use oral contraceptives
was significantly better than among those who did not use oral
contraceptives (P < .05). Specifically, amplitude and frequency
variations between successive vocal cycles were smaller in women
using oral contraceptives in comparison with the control group (.24
dB versus .37 dB and .86% versus 1.27% for amplitude and frequency
variations, respectively).
CONCLUSION: Contrary to the reports of adverse effects that high-dose
pills have on voice, low-dose oral contraceptives show a favorable
influence on voice in young women.
Obstetrics & Gynecology 2003;101:773-777
© 2003 by The American College of Obstetricians and Gynecologists
ORIGINAL RESEARCH
Do Oral Contraceptives Improve Vocal Quality? Limited Trial on Low-
Dose Formulations
Ofer Amir, PhD, Tal Biron-Shental, MD, Chava Muchnik, PhD and Liat
Kishon-Rabin, PhD
From the Department of Communication Disorders, Sackler Medical
School, Tel-Aviv University, Tel-Aviv; and the Department of
Obstetrics and Gynecology, Sapir Medical Center, Kfar-Saba, Israel.
Address reprint requests to: Ofer Amir, PhD, Sheba Medical Center,
Department of Communication Disorders, Tel-Hashomer 52621, Israel; E-
mail: oferamir@post.tau.ac.il.
OBJECTIVE: To evaluate the effect of low-dose monophasic oral
contraceptives on female vocal quality.
METHODS: Acoustic voice parameters of six women who use oral
contraceptives and six women who do not were evaluated repeatedly
during the menstrual cycle. Frequency and amplitude variations were
measured using a computerized voice analysis program. Repeated-
measures analysis of variance was performed to test differences
between groups for each acoustic voice parameter.
RESULTS: Vocal stability among the women who use oral contraceptives
was significantly better than among those who did not use oral
contraceptives (P < .05). Specifically, amplitude and frequency
variations between successive vocal cycles were smaller in women
using oral contraceptives in comparison with the control group (.24
dB versus .37 dB and .86% versus 1.27% for amplitude and frequency
variations, respectively).
CONCLUSION: Contrary to the reports of adverse effects that high-dose
pills have on voice, low-dose oral contraceptives show a favorable
influence on voice in young women.