PURPOSE: The goals of this study were to determine if there were significant differences between singers and nonsingers in the morphology of vocal nodules and the associated impact on vocal function. METHOD: Participants were 10 professionally trained singers with nodules, eight nonsingers with nodules, and 10 individuals with healthy normal voice (controls). Surface electromyography (sEMG) from three anterior neck locations and acoustic rise times for vowels /a/ and /i/ were measured in all the participants. In individuals with nodules, dB SPL/cm H(2)O, glottal airflow, and nodule location and size were also measured. RESULTS: There were no significant differences between singers and nonsingers with nodules in terms of airflow, dB SPL/cm H(2)O, nodule size, or nodule location. In nonsingers with nodules, airflow and nodule size were significantly correlated, but were not significantly correlated in singers. Vowel rise times and sEMG during vocal tasks did not differentiate among nodule and control groups. Sternocleidomastoid sEMG during initiation of the vowel /a/ was statistically significantly stronger in nonsingers with nodules relative to singers with nodules and controls. CONCLUSIONS: Nodule morphology did not differ between singers and nonsingers, although some behavioral aspects of phonation differed between the groups.
PURPOSE: The goals of this study were to determine if there were significant differences between singers and nonsingers in the morphology of vocal nodules and the associated impact on vocal function. METHOD:Participants were 10 professionally trained singers with nodules, eight nonsingers with nodules, and 10 individuals with healthy normal voice (controls). Surface electromyography (sEMG) from three anterior neck locations and acoustic rise times for vowels /a/ and /i/ were measured in all the participants. In individuals with nodules, dB SPL/cm H(2)O, glottal airflow, and nodule location and size were also measured. RESULTS: There were no significant differences between singers and nonsingers with nodules in terms of airflow, dB SPL/cm H(2)O, nodule size, or nodule location. In nonsingers with nodules, airflow and nodule size were significantly correlated, but were not significantly correlated in singers. Vowel rise times and sEMG during vocal tasks did not differentiate among nodule and control groups. Sternocleidomastoid sEMG during initiation of the vowel /a/ was statistically significantly stronger in nonsingers with nodules relative to singers with nodules and controls. CONCLUSIONS: Nodule morphology did not differ between singers and nonsingers, although some behavioral aspects of phonation differed between the groups.
Authors: Gail B Kempster; Bruce R Gerratt; Katherine Verdolini Abbott; Julie Barkmeier-Kraemer; Robert E Hillman Journal: Am J Speech Lang Pathol Date: 2008-10-16 Impact factor: 2.408
Authors: Elizabeth S Heller Murray; Roxanne K Segina; Geralyn Harvey Woodnorth; Cara E Stepp Journal: J Speech Lang Hear Res Date: 2020-02-14 Impact factor: 2.297
Authors: Victoria S McKenna; Manuel E Diaz-Cadiz; Adrianna C Shembel; Nicole M Enos; Cara E Stepp Journal: J Speech Lang Hear Res Date: 2019-04-15 Impact factor: 2.297
Authors: Milan R Amin; Stratos Achlatis; Shirley Gherson; Yixin Fang; Binhuan Wang; Hayley Born; Ryan C Branski; Aaron M Johnson Journal: Otolaryngol Head Neck Surg Date: 2018-10-16 Impact factor: 3.497
Authors: Victoria S McKenna; Andres F Llico; Daryush D Mehta; Joseph S Perkell; Cara E Stepp Journal: J Speech Lang Hear Res Date: 2017-12-20 Impact factor: 2.297
Authors: Patricia Maria Mendes Balata; Hilton Justino da Silva; Kyvia Juliana Rocha de Moraes; Leandro de Araújo Pernambuco; Sílvia Regina Arruda de Moraes Journal: Int Arch Otorhinolaryngol Date: 2013-07