An Examination of Elicitation Method on Fundamental Frequency and Repeatability of Average Airflow Measures in Children Age 4:0-5:11 Years

作者：Brehm Susan Baker^*; Weinrich Barbara D; Sprouse Dana C; May Shelley K; Hughes Michael R

来源：Journal of Voice, 2012, 26(6): 721-725.

DOI：10.1016/j.jvoice.2012.03.012

• Voice
• Voice measurement
• Acoustic measures
• Aerodynamic measures
• Children

Objective. The purpose of this study was to determine the effect of task type on fundamental frequency (F-0) and the short-term repeatability of average airflow values in preschool/kindergarten-age children. %26lt;br%26gt;Study Design. Prospective, experimental. %26lt;br%26gt;Methods. Thirty healthy children (age 4.0-5.11 years) were included in this study. Participants completed three tasks (sustained vowel, counting, and storytelling) used to elicit measurements of F-0. With a 10-minute interval, participants also completed two trials of sustained /a/ at a comfortable pitch and loudness level for the measurement of average airflow rate. F-0 and intensity of the vowel production were recorded for both trials. %26lt;br%26gt;Results. A repeated measures analysis of variance revealed a significant main effect for task type elicitation on F-0 values (P = 0.0003). A significant difference between elicitation tasks for (F0) was observed in the comparison of the counting and storytelling task (P %26lt; 0.0001). A paired t test revealed no significant difference in average airflow rate across two trials (P = 0.872). The change in F-0 and intensity was measured across the trials, and separate analyses of covariance revealed that these changes did not significantly influence average airflow values, (P = 0.809) and (P = 0.365), respectively. %26lt;br%26gt;Conclusions. The results of this study demonstrated that F0 may be influenced by task type in young children. Average airflow values appear to be stable over a short time period. This information is important in determining methods of evaluation and the reliability of instrumental measures in young children with voice disorders.

• 出版日期2012-11