| Measurements of total energy expenditure provide insights into the validity of dietary measurements of energy intake. | |
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MedLine Citation:
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PMID: 8315169 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The quantification of errors inherent in methods of measuring dietary intake has been handicapped by the absence of independent markers for testing their validity. The doubly labeled water technique permits a precise measure of energy expenditure in free-living persons. Because energy expenditure must equal energy intake in populations in energy balance, this technique may be used to validate the assessment of energy intake. A series of studies demonstrated good agreement between mean energy intake and mean energy expenditure when food intake was recorded by observers or when it was self-reported by normal-weight, self-selected, highly motivated volunteer subjects using weighed records. However, in randomly recruited men and women, energy intake by weighed records was 82% and 81%, of energy expenditure, respectively, indicating underestimation of habitual intake. Men and women in the lowest third of reported intake recorded energy expenditure of only 69% and 61%, respectively. Reported intake of obese and previously obese women was only 73% and 64% of expenditure, whether measured by weighed record or by diet history, confirming suspicions that these subjects misrepresented their intake. Acceptable weighed records were obtained from 7- and 9-year-olds whereas 15- and 18-year-olds underestimated intake. Diet histories taken from the same children tended to overestimate intake. These studies suggest that, ideally, all dietary studies should include independent measures of validity. |
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Authors:
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A E Black; A M Prentice; G R Goldberg; S A Jebb; S A Bingham; M B Livingstone; W A Coward |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American Dietetic Association Volume: 93 ISSN: 0002-8223 ISO Abbreviation: J Am Diet Assoc Publication Date: 1993 May |
Date Detail:
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Created Date: 1993-07-29 Completed Date: 1993-07-29 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 7503061 Medline TA: J Am Diet Assoc Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 572-9 Citation Subset: AIM; IM |
Affiliation:
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Dunn Clinical Nutrition Centre, Cambridge, United Kingdom. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Child Child, Preschool Diet* / methods Diet Records Energy Metabolism* Female Humans Male Obesity / diet therapy, metabolism Random Allocation |
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