Evaluation of Phonatory Function in the Elderly
This chapter summarizes how aging affects vocal function. First, the changes in voice pitch vary according to gender. Elderly men tend to speak at a higher pitch than younger men, whereas postmenopausal women speak at a lower pitch than younger women. Second, maximum phonation time is not a useful tool for assessing the healthy elderly, but it can be used for patients with age-related vocal fold atrophy. Third, aging has no impact on the mean airflow rate, but it affects airway resistance. The elderly tend to have lower airway resistance than younger people. However, no consensus exists on whether aging has an impact on expiratory pressure and sound pressure level. Finally, the elderly tend to have a weaker ability to regulate the larynx than the young.
KeywordsSound Pressure Level Airway Resistance Vocal Fold Costal Cartilage Aerodynamic Parameter
- 18.Sawashima M. Honda: an airway interruption method for estimating expiratory air pressure during phonation. In: Baer T, Sasaki C, Harris KS, editors. Laryngeal function in phonation and respiration. Boston: College-Hill; 1987. p. 439–47.Google Scholar
- 19.Jacobs-Condit L, et al. Physical changes in aging. In: Jacobs-Condit L, editor. Gerontology and communication disorders. ASHA: Rockville; 1984. p. 26–72.Google Scholar
- 20.Kahane JC. Anatomic and physiologic changes in the aging peripheral speech mechanism. In: Beasley DS, Davis A, editors. Aging: communications processes and disorders. New York: Grune and Stratton; 1981. p. 21–45.Google Scholar