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Neck Circumference and Vocal Parameters in Women Before and After Bariatric Surgery.
Obes Surg. 2016 Mar;26(3):576-80
Authors: de Souza LB, Pernambuco Lde A, dos Santos MM, Pereira RM
Abstract
BACKGROUND: Morbidly obese patients may suffer from vocal disorders, as vocal production is directly related to the volume of the vocal tract, and the large-scale accumulation of fat in this region may interfere with voice production. The aim of this study was to analyze the neck circumference, fundamental frequency, and maximum phonation time of a group of morbidly obese women before and after bariatric surgery.
METHODS: An observational, longitudinal, and descriptive study was performed with patients of the Obesity and Related Diseases Surgery Unit of a university hospital. A total of 21 morbidly obese women aged 28-68 years, with a mean age of 41.33 years, participated in the study. Neck circumference was measured using a tape measure. To obtain fundamental frequency values, the patient was asked to produce the vowel [a] at normal intensity and pitch for an average period of 3 s. After recording, the participants were asked to produce the sustained vowels [a], [i], and [u] at normal intensity and pitch, with a stopwatch used to measure maximum phonation time. Eight months after surgery, patients were reassessed using the same data collecting procedures as were carried out prior to surgery.
RESULTS: After surgery, there was an increase in the average value of fundamental frequency and maximum phonation time for all the vowels and a reduction in neck circumference. The differences were statistically significant.
CONCLUSIONS: Weight reduction and a consequent decrease in neck circumference affected the changes in maximum phonation time and fundamental frequency values in the voices of these patients, after weight loss.
PMID: 26156306 [PubMed - indexed for MEDLINE]
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