Redução da autopercepção de esforço vocal em um grupo de mulheres sem queixas vocais após fotobiomodulação: uma comunicação breve
Reduction in self-perceived vocal effort after photobiomodulation in a group of women without vocal problems: a brief communication
Rafaela Lombas de Resende; Maria Vitória Leão Ferreira; Beatriz dos Anjos Bergamasco; Ana Carolina Constantini
Resumo
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Abstract
Purpose: To present initial results of an ongoing research about the effects of photobiomodulation (PBM) and inactive laser (placebo) on self-perception of vocal effort in women without voice complaints.
Methods: The participants were randomly divided in two groups: CG (Control Group - inactive laser); EG (Experimental Group - application of 9J per point of low-intensity laser in infrared wavelength). Vocal samples were recorded according to the CAPE-V protocol, numbers (1-20) and months of the year. During these tasks, the participants were guided to realize their self-perception of vocal effort, that was measured using the Borg CR10-BR Scale adapted for vocal effort applied before and after each intervention. Descriptive and inferential statistics were performed. The Shapiro-Wilk test didn't confirm the normality of the data, so the Wilcoxon test was used for intra and inter group comparisons (p-value<0.05).
Results: The total sample was composed of 20 women (18-45 years old), without voice complaints, with mean age of 28,6 years (SD=6,71) in the CG and 27,1 (SD=6,57) in the EG. CG showed a significant mean reduction in BORG scale scores (p=0.031) between pre and post intervention, as did EG (p=0.020). There was no statistically significant difference in the comparison between the two groups.
Conclusion: There was a general reduction in the self-perceived vocal effort in the pre and post intervention for both groups. A placebo effect was observed in the CG. No one reported a worsening of self-perceived vocal effort after PBM.
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Referências
1 Crow JA, Stauffer JW, Levine D, Dale D, Borsa PA. Therapeutic photobiomodulation before strenuous exercise attenuates shoulder muscle fatigue. J Athl Train. 2024;59(7):724-30.
2 Kagan LS, Heaton JT. The effectiveness of low-level light therapy in attenuating vocal fatigue. J Voice. 2017 Maio;31(3):384.e15-23.
3 Batista DJ, Lopes LW, Almeida AA, Siqueira LTD, Ribeiro VV. What factors determine the use of volitional and non-volitional devices in vocal interventions performed by Brazilian Speech-Language Pathologists? J Voice. 2023. No prelo. PMid:37957072.
4 Vasquez-Bonilla A, Yáñez-Sepúlveda R, Tuesta M, Martín E, Monsalves-Álvarez M, Olivares-Arancibía J, et al. Acute fatigue impairs heart rate variability and resting muscle oxygen consumption kinetics. Appl Sci. 2024;14(20):9166.
5 Balata PMM, Bastos RSA, Cunha MD, Silva HJ. Fotobiomodulação na clínica vocal. In: Mouffron V, Alves GA, Motta AR, Silva HJ, editores. Fotobiomodulação aplicada à fonoaudiologia. Carapicuíba: Pró Fono; 2022. p. 284-98.
6 Hunter E, Maxfield L, Graetzer S. The effect of pulmonary function on the incidence of vocal fatigue among teachers. J Voice. 2020;34(4):539-46.
7 Azari S, Shavaki YA, Ghelichi L, Moossavi A, Saneii S. Voice handicap index in Iranian rehabilitation professors with and without vocal complaints. Middle East J Rehabil Health Stud. 2022 Jul;9(3):e121048.
8 Pontes ES, Vaiano TG, Bastos RSA, Lopes LW. Opinião de fonoaudiólogos sobre uso da fotobiomodulação na clínica vocal. CoDAS. 2023;35(6):e20220060.
9 Pontes ES, Vaiano TG, Bastos RSA, Duarte JMT, Santana ER, Lopes LW. Fotobiomodulação na habilitação e reabilitação vocal: consenso Delphi baseado em especialistas. CoDAS. 2025;37(2):e20230356.
10 Schulz KF, Altman DG, Moher D. CONSORT 2010 statement: updated guidelines for reporting parallel group randomised trials. BMJ. 2010 Mar 23;340:c332.
11 Camargo MRMC, Zambon F, Moreti F, Behlau M. Tradução e adaptação cultural e linguística da Adapted Borg CR10 for Vocal Effort Ratings para o português brasileiro. CoDAS. 2019;31(5):e20180112.
12 ASHA: American Speech-Language-Hearing Association. Consensus auditory-perceptual evaluation of voice (CAPE-V). Rockville: ASHA; 2002.
13 Berkhout C, Berbra O, Favre J, Collins C, Calafiore M, Paremans L, et al. Defining and evaluating the Hawthorne effect in primary care, a systematic review and meta-analysis. Front Med. 2022 Nov 8;9:1033486.
14 Anderson S, Stebbins GT. Determinants of placebo effects. Int Rev Neurobiol. 2020;153:27-47.
15 SBFA: Sociedade Brasileira de Fonoaudiologia. Parecer: o uso da fotobiomodulação em Fonoaudiologia. São Paulo: SBFA; 2020.
Submetido em:
13/02/2025
Aceito em:
05/05/2025
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