Subjective voice change was associated with appendicular skeletal muscle mass in elderly men, but not in women: A cross-sectional study.

Abstract

To investigate the relationship between subjective voice changes and appendicular skeletal muscle in the elderly in Korea. Retrospective cross-sectional study. Population-based survey data were collected by the Korean National Health and Nutrition Examination Survey between January 2009 and December 2011. A total of 2611 participants (1081 men and 1530 women) aged 65 to 80 years were enrolled in the Korean National Health and Nutrition Examination Survey from 2009 to 2011. A 70-degree laryngeal endoscopy was performed to check for abnormalities in the larynx, while dual-energy x-ray absorptiometry was utilised to measure appendicular skeletal muscle mass. The correlation between subjective voice change and appendicular skeletal muscle index (ASMI) was analysed using a linear-by-linear association test and logistic regression analysis. When comparing ASMI according to the presence or absence of subjective voice change, elderly men showed significantly lower ASMI values when subjective voice change was present (p=.021). However, in women, the ASMI was not significantly lower in the presence of subjective voice changes (p=.365). We confirmed that subjective voice change was significantly lower in the highest quintile of ASMI compared to lowest quintile of ASMI in the men using logistic regression analysis (B 0.281, 95% confident interval 0.082-0.964, p < .044). This study has shown that in Korean men aged >65 years, subjective voice abnormality significantly increased as skeletal muscle mass decreased. Further longitudinal studies are needed to determine whether a correlation exists between objective voice test results and ASMI.