Document Detail

A short training program improves the accuracy of portion-size estimates in future dietitians.
MedLine Citation:
PMID:  17992980     Owner:  NLM     Status:  MEDLINE    
The objective of this study was to determine whether a short training program, using real foods, would decreased their portion-size estimation errors after training. 90 student volunteers (20.18+/-0.44 y old) of the University of the Basque Country (Spain) were trained in observational techniques and tested in food-weight estimation during and after a 3-hour training period. The program included 57 commonly consumed foods that represent a variety of forms (125 different shapes). Estimates of food weight were compared with actual weights. Effectiveness of training was determined by examining change in the absolute percentage error for all observers and over all foods over time. Data were analyzed using SPSS vs. 13.0. The portion-size errors decreased after training for most of the foods. Additionally, the accuracy of their estimates clearly varies by food group and forms. Amorphous was the food type estimated least accurately both before and after training. Our findings suggest that future dietitians can be trained to estimate quantities by direct observation across a wide range of foods. However this training may have been too brief for participants to fully assimilate the application.
Marta Arroyo; Concepción Martinez de la Pera; Laura Ansotegui; Ana Ma Rocandio
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Archivos latinoamericanos de nutrición     Volume:  57     ISSN:  0004-0622     ISO Abbreviation:  Arch Latinoam Nutr     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-11-12     Completed Date:  2008-02-07     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0067507     Medline TA:  Arch Latinoam Nutr     Country:  Venezuela    
Other Details:
Languages:  eng     Pagination:  163-7     Citation Subset:  IM    
Department of Nutrition and Food Science, Faculty of Pharmacy, University of the Basque Country, Vitoria-Gasteiz, Spain.
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MeSH Terms
Dietetics / education*
Observer Variation
Size Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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