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These subtle and subclinical age\u2010related changes make older adults more vulnerable to dysphagia during disease insults. However, there are limited studies of the swallowing process in older adults, because measurements are typically invasive or require exposure to <jats:styled-content style=\"fixed-case\">X<\/jats:styled-content>\u2010rays. In the present study, we used integrated non\u2010invasive measurements to determine aging\u2010related changes of swallowing, and in the coordination of swallowing and respiration for a population of healthy participants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The non\u2010invasive system provided measurements of larynx movement with piezoelectric sensors, submental muscle activity with surface electromyography and respiration\u2013swallowing coordination by measurement of nasal airflow. We recruited 112 healthy participants from the community, 35 in a young\u2010age group (age 20\u201330\u2009years), 38 in a middle\u2010age group (age 31\u201350\u2009years) and 39 in an old\u2010age group (age 51\u201370\u2009years).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The oropharyngeal swallowing parameters of the old\u2010age group had delayed onset latency and longer swallowing apnea duration relative to the other groups, and these differences were greater for larger boluses. The middle\u2010 and old\u2010age groups had less expiratory\u2013expiratory respiratory phase pattern than the young\u2010age group. The probability of piecemeal deglutition was highest in the old\u2010age group and lowest in the young\u2010age group. These results show that the phases of oropharyngeal swallowing and the coordination of swallowing with respiration gradually change with aging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>We used integrated non\u2010invasive measurements to document age\u2010related changes in swallowing, and in the coordination of swallowing and respiration in healthy adults. <jats:bold>Geriatr Gerontol Int 2015; 15: 736\u2013744.<\/jats:bold><\/jats:p><\/jats:sec>","DOI":"10.1111\/ggi.12343","type":"journal-article","created":{"date-parts":[[2014,9,26]],"date-time":"2014-09-26T05:29:26Z","timestamp":1411709366000},"page":"736-744","source":"Crossref","is-referenced-by-count":67,"title":["Aging\u2010related changes in swallowing, and in the coordination of swallowing and respiration determined by novel non\u2010invasive measurement 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