Assessing energy expenditure during eating in vulnerable older adults
Goldberg, Lynette R. Heiss, Cynthia J.
Goldberg, Lynette R.
Heiss, Cynthia J.
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2012-11
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Goldberg, Lynette R.; Heiss, Cynthia J. 2012. Assessing energy expenditure during eating in vulnerable older adults. Gerontologist, v.52 no.1 p.630
Abstract
Reflecting the conference theme, Charting New Frontiers in Aging,
this paper presents data on an innovative way to measure energy expenditure
during eating in older adults with swallowing disorders (dysphagia).
These older adults appear to fatigue during meals. This fatigue
is thought to reflect their increased level of effort (energy expenditure)
during eating. Optimal measurement of energy expenditure is documented
through body heat output in an enclosed metabolic chamber, or
indirect calorimetry in which the nose and mouth are masked and oxygen
consumption is measured. Metabolic chambers are not readily available
to healthcare providers and indirect calorimetry is not possible during
eating. A portable computerized device, SenseWear, has been shown
to have concurrent validity, when compared to indirect calorimetry, in
measuring energy expenditure during activities such as running. A feasibility
study of SenseWear and indirect calorimetry during simulated
chewing in college students documented a statistically significant correlation
(r = 0.49, p < 0.05) between the two measurement methods.
SenseWear then was used to measure the energy expended by 20 selfreported
healthy older adults who were residents of a Continuing Care
Retirement Community as they ate a regular lunch. The mean energy
expenditure was 61.90 (±6.90) kcal. This value was significantly greater
than the expected 48 kcal for age- and weight-matched older adults documented
through eating in a metabolic chamber. Although continued refinement of the protocol is needed, results suggest that the use of
SenseWear may be a clinically useful way to assess energy expenditure
during eating in vulnerable older adults.
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Presented at the Gerontological Society of America
65th Annual Scientific Meeting, San Diego, CA, November 14–18, 2012
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Oxford University Press
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Gerontologist
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0016-9013