Objective measurement of vocal parameters in older people with and without Parkinson's disease in their natural environments: a pilot study
Contemporary Issues in Communication Science and Disorders
Medical Subject Headings
Phonation; Parkinson's Disease; Humans; Aged
Purpose: The purpose of this study was to explore whether significant differences existed in mean amplitude and total phonation time between a group of older individuals with idiopathic Parkinson’s disease (PD) and an age- and gender-matched control group (NO PD) in their natural environments, based on data collected by the ambulatory phonation monitor (APM; KayPENTAX).
Method: In this prospective, between-groups study, 5 individuals with PD and 5 NO PD controls wore the APM on 3 typical 8-hr days. The dependent variables included mean amplitude and total phonation time as measured by the APM. All of the participants also completed a self-estimated talk time log and an APM- use questionnaire. Data analysis included descriptive statistics and a repeated measures analysis of variance.
Results: The NO PD group exhibited significantly higher mean amplitudes than the group with PD. The 2 groups did not differ in total phonation time. The group with PD significantly overestimated talk time compared to the NO PD group.
Conclusion: These preliminary data suggest that the APM may be used to objectively measure specific vocal parameters in a person’s natural communica- tion environment. However, larger sample sizes are needed to better understand the device’s usefulness.
Donovan, Neila J., Boudreaux, Danielle M. and Savage, Megan C. (2015). Objective measurement of vocal parameters in older people with and without Parkinson's disease in their natural environments: A pilot study. Contemporary Issues in Communication Science and Disorders, 42(2), 100-109. https://www.asha.org/uploadedFiles/ASHA/Publications/cicsd/2015S-Objective-Measurement-of-Vocal-Parameters.pdf