Document Detail


Validity of the Remote Food Photography Method (RFPM) for estimating energy and nutrient intake in near real-time.
MedLine Citation:
PMID:  22134199     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Two studies are reported; a pilot study to demonstrate feasibility followed by a larger validity study. Study 1's objective was to test the effect of two ecological momentary assessment (EMA) approaches that varied in intensity on the validity/accuracy of estimating energy intake (EI) with the Remote Food Photography Method (RFPM) over 6 days in free-living conditions. When using the RFPM, Smartphones are used to capture images of food selection and plate waste and to send the images to a server for food intake estimation. Consistent with EMA, prompts are sent to the Smartphones reminding participants to capture food images. During Study 1, EI estimated with the RFPM and the gold standard, doubly labeled water (DLW), were compared. Participants were assigned to receive Standard EMA Prompts (n = 24) or Customized Prompts (n = 16) (the latter received more reminders delivered at personalized meal times). The RFPM differed significantly from DLW at estimating EI when Standard (mean ± s.d. = -895 ± 770 kcal/day, P < 0.0001), but not Customized Prompts (-270 ± 748 kcal/day, P = 0.22) were used. Error (EI from the RFPM minus that from DLW) was significantly smaller with Customized vs. Standard Prompts. The objectives of Study 2 included testing the RFPM's ability to accurately estimate EI in free-living adults (N = 50) over 6 days, and energy and nutrient intake in laboratory-based meals. The RFPM did not differ significantly from DLW at estimating free-living EI (-152 ± 694 kcal/day, P = 0.16). During laboratory-based meals, estimating energy and macronutrient intake with the RFPM did not differ significantly compared to directly weighed intake.
Authors:
Corby K Martin; John B Correa; Hongmei Han; H Raymond Allen; Jennifer C Rood; Catherine M Champagne; Bahadir K Gunturk; George A Bray
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.; Validation Studies     Date:  2011-12-01
Journal Detail:
Title:  Obesity (Silver Spring, Md.)     Volume:  20     ISSN:  1930-739X     ISO Abbreviation:  Obesity (Silver Spring)     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-03-28     Completed Date:  2012-07-03     Revised Date:  2014-04-17    
Medline Journal Info:
Nlm Unique ID:  101264860     Medline TA:  Obesity (Silver Spring)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  891-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Cellular Phone / instrumentation
Diet Records*
Diet Surveys
Energy Intake*
Female
Food*
Food Preferences
Humans
Male
Middle Aged
Patient Satisfaction
Photography*
Pilot Projects
Questionnaires
Reproducibility of Results
Young Adult
Grant Support
ID/Acronym/Agency:
1P30 DK072476/DK/NIDDK NIH HHS; K23 DK068052/DK/NIDDK NIH HHS; K23 DK068052/DK/NIDDK NIH HHS; R21 AG032231/AG/NIA NIH HHS; R21 AG032231/AG/NIA NIH HHS
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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