Abstract
Purpose
The purpose of the present study was to compare the voice of choir singers before and after 60 min of singing and after an absolute rest.
Methods
Twenty-one female choir singers aged on average 26.59 years, with experience in choir singing of at least one year were instructed to emit the vowel /a/ before and after singing and after a vocal rest of 30 min for an analysis of acoustic measures, and for the evaluation of their tactile–kinesthetic self-perception. Vocal warm-up was performed for 10 min. The participants were instructed to sing the “Ave Verum” music continuously for 60 min.
Results
f0 (p = 0.0001) and Flo (p = 0.0002) increased after the singing test and were reduced after the vocal rest, in contrast to Fhi (p = 0.001), which continued to be increased compared to the pre-test measure even after the vocal rest. The vAm parameter (p = 0.05) was reduced after continuous singing and rest. All self-evaluation symptoms increased after the continuous singing task and were reduced after the 30 min rest, except for complaints of low voice, pain when swallowing and cough/throat clearing.
Conclusion
60 min of continuous use of the singing voice induced signs of vocal fatigue with an increase in f0, with improvement of symptoms and a reduction of f0 occurring after 30 min of vocal rest.
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All procedures in studies involving human participants were in accordance with the ethical standards of the national research committee and with the 1964 Helsinki.Declaration and its later amendments. This study was approved by the Research Ethics Committee of the Clinics Hospital of the School of Medicine of Ribeirão Preto of the University of São Paulo according to protocol number 9711/2008.
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Onofre, F., Ricz, H., de Almeida Prado, Y. et al. Vocal resistance among choir singers. Eur Arch Otorhinolaryngol 278, 159–165 (2021). https://doi.org/10.1007/s00405-020-06238-7
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DOI: https://doi.org/10.1007/s00405-020-06238-7