The Shaker Exercise: Rationale and Results The rationale for the Shaker Exercise that was developed to augment upper esophageal sphincter (UES) opening is an example of scientific advancement through inter-disciplinary cooperation by research and clinical professionals interested in normal and aberrant deglutition. These professionals include scientists and clinicians from Radiology, Medicine, Speech-Language Pathology, Surgery, and ... Article
Article  |   March 01, 2002
The Shaker Exercise: Rationale and Results
Author Affiliations & Notes
  • Caryn Easterling
    Milwaukee, WI
Article Information
Swallowing, Dysphagia & Feeding Disorders / Articles
Article   |   March 01, 2002
The Shaker Exercise: Rationale and Results
SIG 13 Perspectives on Swallowing and Swallowing Disorders (Dysphagia), March 2002, Vol. 11, 11-13. doi:10.1044/sasd11.1.11
SIG 13 Perspectives on Swallowing and Swallowing Disorders (Dysphagia), March 2002, Vol. 11, 11-13. doi:10.1044/sasd11.1.11
The rationale for the Shaker Exercise that was developed to augment upper esophageal sphincter (UES) opening is an example of scientific advancement through inter-disciplinary cooperation by research and clinical professionals interested in normal and aberrant deglutition. These professionals include scientists and clinicians from Radiology, Medicine, Speech-Language Pathology, Surgery, and Biomechanics. The fundamental guiding principle for this research was the understanding that the UES opening is a mechanical event consisting of a series of forces applied externally to the UES combined with relaxation of the sphincter musculature. This understanding is evident even in early work from Barclay (Barclay, 1930) and others who studied the field of deglutition. The physiologic basis of the Shaker Exercise has two primary components: (a) increasing the distraction forces acting on the UES by the su-pra-hyoid muscle complex and (b) decreasing the hydrodynamic resistance to pharyngeal outflow by increasing the cross-sectional area of the pharyngo-esophageal junction.
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