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Maximum phonation time in the pulmonary function assessment

2021; CEFAC Saúde e Educação; Volume: 23; Issue: 4 Linguagem: Inglês

10.1590/1982-0216/20212349720

1982-0216

Edvania Gomes Henrique Moreno, Bianca Teixeira Calassa, Daniela Vitoria Silva Oliveira, Maylanne Iris Nascimento Silva, Laienne Carla Barbosa De Barros Albuquerque, Ricardo de Freitas Dias, Bruno Rafael Vieira Souza Silva, Rodrigo Cappato de Araújo, Eduarda Lubambo Costa, Emília Chagas Costa, Marco Aurélio de Valois Correia,

Ultrasound in Clinical Applications

ABSTRACT Purpose: to evaluate the reliability of the maximum phonation time (MPT) and Vital Capacity intra and inter-examiner, by means of the single-breath counting test (CT) and the sustained /a/ phoneme, and the slow vital capacity (SVC). Methods: a reliability study carried out in three groups of healthy individuals, each group with 30 volunteers, allocated according to age. SVC was measured using a spirometer, while the MPT was assessed by the phoneme /a/ and CT. The data were analyzed using SPSS version 20.0. Initially, descriptive statistics were used and for data reliability, the intraclass correlation coefficient (ICC). Results: the Intraclass Correlation Coefficients (ICC) were considered excellent, with significant results above 0.92 for SVC and greater than 0.79 for CT and phoneme /a/. Regarding the inter-examiner evaluation, the ICCs were also significant for both SVC with values greater than 0.96, and for CT and the phoneme /a/ with values greater than 0.85. The error inherent in the technique was assessed using the standard error of the measurement for intra and inter-examiner analyses with values ranging from 1.79 to 3.29 for phoneme /a/, 3.20 to 6.58 for CT and 65, 05 to 206.73 for SVCml. Conclusion: phonation techniques with the phoneme /a/ and CT, as well as SVC, have an excellent reliability, due to intra and inter-examiner agreement measures.