The influence of bolus volume and viscosity on the distribution of anterior lingual force during the oral stage of swallowing was investigated using a new force transducer technology. The maximum force amplitudes from five normal adults were measured at anterior, right and left lateral tongue margins during ten volitional swallows of 5-, 10-, and 20-ml volumes of water, applesauce, and pudding. Results indicated significant increases in peak force amplitude as viscosity increased. Volume did not significantly influence maximum lingual force amplitudes. Individual subjects demonstrated consistent patterns of asymmetrical force distribution across the lingual margins tested. The results suggest bolus-specific properties influence the mechanics of oral stage lingual functioning. This finding has important clinical implications in the assessment and treatment of dysphagic individuals. Applications of the force transducer array in future research are addressed.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.68222 |
| Date | January 1993 |
| Creators | Miller, Jeri L. |
| Contributors | Watkin, Kenneth L. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (School of Communication Sciences and Disorders.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001397535, proquestno: AAIMM94480, Theses scanned by UMI/ProQuest. |
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