Sip-Sizing Behaviors in Natural Drinking Conditions Compared to Instructed Experimental Conditions

Authors: Bennett, Janice¹; Lieshout, Pascal¹; Pelletier, Cathy²; Steele, Catriona³

Source: Dysphagia, Volume 24, Number 2, June 2009 , pp. 152-158(7)

Publisher: Springer

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Abstract:

To understand disordered physiology, it is first necessary to determine what constitutes normal function. Liquid sip size during swallowing in healthy individuals has been investigated with varied results. Bolus size is a variable that is manipulated in both research studies and clinical swallowing assessments, so defining normal sip size has relevance in both domains. This study looked at sip size under instruction in experimental tasks and compared it to sip size in free drinking while participants were unaware that drinking was being observed. A statistically significant difference was found in water sip volume between natural drinking (mean = 16 ml) and instructed experimental drinking tasks (mean = 6.6-6.8 ml). This difference far exceeded the magnitude of sip-size variation observed between instructed drinking tasks using different stimuli and as a function of participant's gender or age group.

Keywords: Swallowing; Sip size; Dysphagia; Deglutition; Deglutition disorders

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s00455-008-9183-y

Affiliations: 1: Swallowing Rehabilitation Research Laboratory, Toronto Rehabilitation Institute, 550 University Avenue, Room 12030, Toronto, ON, Canada, M5G 2A2 2: University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA 3: Swallowing Rehabilitation Research Laboratory, Toronto Rehabilitation Institute, 550 University Avenue, Room 12030, Toronto, ON, Canada, M5G 2A2, Email: steele.catriona@torontorehab.on.ca

Publication date: 2009-06-01