| Use of accelerometer data in prediction equations for capturing implausible dietary intakes in adolescents. | |
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MedLine Citation:
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PMID: 20881064 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Reporting errors have been quantified in epidemiologic studies by comparing reported intakes with predicted energy requirements (pERs). Several studies lacking measures of physical activity level (PAL) assigned low-active levels to obtain pERs. OBJECTIVE: We applied objective physical activity measures to current methods to quantify dietary reporting errors and compared associations with anthropometric and dietary variables among plausible and implausible reporters. DESIGN: This study included 2868 adolescents with an average age of 13 y. Three-day dietary records, accelerometers, and dual-energy X-ray absorptiometry were used to assess diet, activity, and body composition, respectively. Three variations of physical activity coefficients were used: 1) assigning low physical activity coefficients (PA(low)), 2) calculating PAL values (PA(PAL)), and 3) applying minutes of moderate-to-vigorous physical activity (PA(MVPA)). RESULTS: Of the total participants, 51.5%, 51.8%, and 37.1% of the PA(low), PA(PAL), and PA(MVPA) groups, respectively, were classified as underreporters, and 40.8%, 37.9%, and 42.4% of the respective groups were classified as plausible reporters. Underreporters had a higher body mass index, body fat, and waist circumference than did plausible reporters (P < 0.001 for all). Overreporters had a lower weight and body fat than did plausible reporters (P < 0.001 for all). Underreporters reported lower dairy and calcium intakes than did plausible reporters; the results were attenuated with adjustment for total energy. CONCLUSION: Accounting for objective physical activity measures to quantify reporting errors resulted in different and potentially more reasonable proportions of implausible reporters. |
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Authors:
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Sabrina E Noel; Calum Mattocks; Pauline Emmett; Chris J Riddoch; Andrew R Ness; P K Newby |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2010-09-29 |
Journal Detail:
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Title: The American journal of clinical nutrition Volume: 92 ISSN: 1938-3207 ISO Abbreviation: Am. J. Clin. Nutr. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-24 Completed Date: 2010-12-23 Revised Date: 2011-12-21 |
Medline Journal Info:
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Nlm Unique ID: 0376027 Medline TA: Am J Clin Nutr Country: United States |
Other Details:
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Languages: eng Pagination: 1436-45 Citation Subset: AIM; IM |
Affiliation:
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Department of Pediatrics, Boston University School of Medicine, Boston Medical Center, Boston, MA, USA. sabrina.noel@bmc.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Absorptiometry, Photon Adipose Tissue Adolescent Bias (Epidemiology)* Body Composition* Body Weight Calcium, Dietary / administration & dosage* Dairy Products Diet* Diet Records Exercise* Female Humans Male Motor Activity Obesity / etiology* Physical Exertion Research Design Self Report* |
| Grant Support | |
ID/Acronym/Agency:
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R01 HL071248-01A/HL/NHLBI NIH HHS; //Wellcome Trust |
| Chemical | |
Reg. No./Substance:
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0/Calcium, Dietary |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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