Frame by frame analysis of glottic closure in fasting subjects

Abstract

Objective: The purpose of the study is to examine vocal fold closure in fasting subjects using frame by frame analysis. Subjects and Methods: Twenty-two male subjects were recruited for this study. All subjects were evaluated while fasting and non fasting. Frame by frame analysis of at least three glottic cycles was performed and reported as a mean closed quotient. The degree of phonatory effort and vocal fatigue was also reported. Results: The mean closed quotient for all subjects while non fasting was 0.427 ± 0.098 and while fasting 0.441 ± 0.073, with no significant difference between the two (p value 0.417). There was a significant increase in the phonatory effort while fasting (0.23 non fasting vs. 0.77 fasting, p value 0.036). Conclusion: There is no change in the mean closed quotient in male subjects while fasting. However, most subjects exhibit a significant increase in phonatory effort. © 2018 Lebanese Order of Physicians. All rights reserved.