Date of Award
Master of Science (MS)
Communication Disorders, Special Education & Disability Services
Lori E. Lombard, Ph.D., CCC-SLP
David W. Stein, Ph.D., CCC-SLP
Lisa Hammett Price, Ph.D., CCC-SLP
Laryngeal diadochokinesis (L-DDK) is a measurement used by speech-language pathologists to identify and assess laryngeal function. The current research on L-DDK, however, is lacking normative data to make it clinically useful for evaluations. There are also several inconsistencies found in the current research that limit the reliability of L-DDK measures. This research study aims to bridge this gap in the research by establishing normative data on L-DDK strength measurements in the geriatric population (60-90 years of age). Twenty participants (10 male and 10 female) produced two laryngeal tasks for a period of seven seconds for three trials each. Normative L-DDK data including mean, standard deviation, and range were collected for two different strength measurements, rise time and average amplitude. Results revealed no statistically significant differences in L-DDK strength values between the adductory task and the abductory task, nor between male and female participants.
Yates, Lauren E., "Laryngeal Diadochokinetic Strength in the Geriatric Population" (2015). Theses and Dissertations. 1302.