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Blood Plasma Hormone-Level Influence on Vocal Function.

Laura W Plexico1, Mary J Sandage1, Heidi A Kluess1

  • 1Auburn University, AL.

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|May 14, 2020
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Summary
This summary is machine-generated.

Hormone levels and speaking fundamental frequency (Sf0) differed significantly between reproductive and postmenopausal women. Acoustic measures did not reveal significant vocal function changes across menstrual cycle phases in reproductive women.

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Area of Science:

  • Otolaryngology
  • Speech and Hearing Science
  • Reproductive Endocrinology

Background:

  • Hormonal fluctuations during the menstrual cycle and menopause can influence physiological functions.
  • Vocal function, including acoustic parameters, may be affected by these hormonal changes.
  • Previous research has yielded inconsistent findings regarding hormone-voice interactions.

Purpose of the Study:

  • To investigate the impact of menstrual cycle phase and hormone levels on vocal function in reproductive and postmenopausal females.
  • To compare acoustic measurements of voice between reproductive and postmenopausal women.
  • To test hypotheses regarding lower speaking fundamental frequency (Sf0) and cepstral peak prominence (CPP) during specific menstrual phases and in postmenopausal women.

Main Methods:

  • A mixed factorial analysis of variance was employed to compare reproductive (n=15) and postmenopausal (n=13) women across four menstrual cycle phases.
  • Acoustic measures including mean fundamental frequency (f0), speaking fundamental frequency (Sf0), and cepstral peak prominence (CPP) were analyzed.
  • Blood assays measured estrogen, progesterone, testosterone, and neuropeptide Y levels at four time points.

Main Results:

  • Postmenopausal women exhibited significantly lower hormone levels and significantly lower Sf0 compared to reproductive women across all phases.
  • No significant differences in CPP or Sf0 were found across menstrual cycle phases within the reproductive group.
  • Higher estrogen levels were observed during ovulation, and higher progesterone levels during the luteal phase in reproductive women.

Conclusions:

  • Significant differences in hormone levels and Sf0 exist between reproductive and postmenopausal women.
  • The acoustic measures used were not sensitive enough to detect hormonally mediated vocal function changes within the menstrual cycle.
  • Participant selection criteria, excluding certain health conditions and medications, may have influenced the findings.