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Purpose: The purpose of this study was to determine if a significant difference in labial strength exists between healthy controls, individuals who had experienced a stroke with no deficits, individuals who had experiencd a stroke and dysarthria, and in- dividuals who had experienced a stroke with dysar- thria and dysphagia. Method: Four groups participated in the study: a control group of healthy adults and 3 experimental groups of patients with a diagnosis of stroke. The experimental groups were characterized according to the following features: labial weakness only, dysar- thria, and dysarthria and dysphagia. All participants performed an oral motor evaluation, diadochoki- netic rates, clinical swallow evaluation, and bilateral measurements of labial strength using the Iowa Oral Performance Instrument (IOPI; Iowa Oral Performance Instrument Medical, 2010). Results: Significant differences in labial strength were S peech production and deglutition are complicated acts requiring precise, se- quenced movements involving the cen- tral nervous system, peripheral nervous system, and muscles. Recent clinical research on articulation and the oral preparatory and oral phases of the swallow has focused on the role of the tongue in speech pro- duction and deglutition (Goozee, Murdoch, & The- odoros, 2001; Neel & Palmer, 2012; Steele, Bailey, Molfenter, Yeates, & Grace-Martin, 2010; Stierwalt & |
