Banca de DEFESA: Karen Maria de Paula

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : Karen Maria de Paula
DATE: 04/08/2023
TIME: 08:00
LOCAL: Plataforma Zoom
TITLE:

Effects of low intensity laser photobiomodulation in the vocal performance of singers: Randomized clinical trial

 

KEY WORDS:

Low-intensity light therapy. Vocal fatigue. Singing. Vocal hyperfunction. Voice. Protocols.

PAGES: 100
BIG AREA: Ciências da Saúde
AREA: Fonoaudiologia
SUMMARY:

Introduction: the impact of voice problems in singers will be completely different from that to individuals with low vocal demand. For artistic voices, association between quality and demand is the most important aspect for a long-lasting career. Singers can be exposed to periods of long physical and vocal effort, increasing the risk of fatigue. Objective: The aim of this study is to contribute to the analysis of the relationship between low-level laser use and vocal fatigue. Methodology: 33 individuals took part in the study, 15 female and 18 male professional singers aged between 22 and 58. The participants did not have any self-reported vocal pathologies or injuries detected in otorhinolaryngological examination. In addition, they did not have any contraindications for laser therapy. Before singing, participants were randomly divided into three groups: the first was submitted to low-power laser, with red and infrared wavelengths, with a dose of 5J in 5 points of the larynx; the second was submitted to placebo laser therapy, and the third received no laser therapy. All participants answered the vocal self-assessment protocols: Modern Singing Handicap Index (IDCM) and Vocal Fatigue Index (IFV). Within 60min, they sang at high intensity in three moments of 15 minutes each, with a 5-minute break between them. After singing, they responded to the EASE-BR protocol at three times for 24 hours. Results: Participants who received laser had a lower EASE-BR score and an increase in maximum phonation time (MPT) in comparison with the groups that received placebo and no-laser therapy. No statistically relevant differences were found in the IFV and IDCM questionnaires. Conclusion: The study showed that the low-power laser had beneficial results regarding vocal fatigue, since the participants who received the laser obtained immediate post-performance results superior to those from groups that did not receive it, based on the analysis of the EASE-BR and MPT. However, the application of the laser in higher doses is suggested for comparison purposes, and in order to obtain ideal dosimetry.

COMMITTEE MEMBERS:
Externa à Instituição - LARISSA VILELA PEREIRA - USP
Externa à Instituição - MARCIA HELENA MOREIRA MENEZES
Presidente - 2528668 - PAULA ELAINE DINIZ DOS REIS
Externa à Instituição - VALÉRIA GOMES DA SILVA
Externa ao Programa - 1162102 - VANESSA VEIS RIBEIRO - UnB