Semi-Occluded Vocal Tract Exercises: Understanding the Prevalence and Purposes within the Collegiate Voice Instructor Population

Abstract

Semi-occluded vocal tract exercises (SOVTEs) have been a topic of research and interest among voice specialists for over three decades. An SOVTE is "any exercise in which the vocal tract is made partially closed at or near the lips." When this kind of occlusion occurs there are numerous consequences that follow, but of primary interest is a beneficial change of impedance. These beneficial changes are still being studied, but efficiency in phonation, as well as a shift in the configuration of the vocal folds during phonation are two significant findings thus far. Efficiency in vocal production is paramount to a performer's vocal health. Therefore, a dissipating impedance or a hindering reactance would be undesirable. Research over the last three decades has largely addressed the degree of reactive inertance possible through such impedance and its health benefits on the speaking and singing voice. The performing arts health aspects of these benefits are increasingly relevant to professional voice users. Although research on SOVTEs has become plentiful and widely available to voice teachers, it is unknown how or if this population is digesting the current performing arts health research and implementing it within their vocal instruction. Understanding the extent to which SOVTE science is known and implemented by the current voice-teaching population could inform the current and future voice-science community on how to best alter the dissemination of upcoming research.