Journal
DYSPHAGIA
Volume 16, Issue 2, Pages 128-135Publisher
SPRINGER-VERLAG
DOI: 10.1007/s004550011001
Keywords
normal swallowing; respiration; apnea; deglutition; duration; deglutition disorders
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The effects of age, gender, bolus volume, and trial on swallowing apnea duration (SAD) and swallow/respiratory phase relationships were examined. Sixty adults, composed of ten males and tell females in each of three age groups (i.e., 20-39, 40-59, and 60-83 years), participated. SAD was assessed via nasal airflow during saliva swallows and 10-, 15-, 20-, 25-mL bolus volumes across three trials. Results revealed SAD is consistent across trial (p > 0.05). Significant main effects of age, gender, and bolus volume were found (p < 0.05), i.e., elderly adults had longer SAD than young and middle-aged adults; women had longer SAD than men; and SAD increased as bolus volume increased. With respect to saliva swallows, a significant interaction of age by gender was found (p < 0.05), i.e., males exhibited a decrease in SAD with increasing age while females exhibited an increase in SAD with increasing age. Concerning swallow/respiratory phase relationships, the pattern of exhale-swallow-exhale was evident during 62% of participants' swallows. Furthermore, age, gender, or bolus volume did not predict the pattern of exhale-swallow-exhale (p > 0.05).
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