scholarly journals Integration of an Image-Based Dietary Assessment Paradigm into Dietetic Training Improves Food Portion Estimates by Future Dietitians

Nutrients ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 175
Author(s):  
Dang Khanh Ngan Ho ◽  
Wan-Chun Chiu ◽  
Yu-Chieh Lee ◽  
Hsiu-Yueh Su ◽  
Chun-Chao Chang ◽  
...  
Keyword(s):  
Dietary Assessment ◽  
Portion Size ◽  
First Semester ◽  
Remedial Teaching ◽  
Portion Sizes ◽  
Food Portion ◽  
Dietetic Students ◽  
Medical University ◽  
Size Estimates ◽  
Food Portion Size

The use of image-based dietary assessments (IBDAs) has rapidly increased; however, there is no formalized training program to enhance the digital viewing skills of dieticians. An IBDA was integrated into a nutritional practicum course in the School of Nutrition and Health Sciences, Taipei Medical University Taiwan. An online IBDA platform was created as an off-campus remedial teaching tool to reinforce the conceptualization of food portion sizes. Dietetic students’ receptiveness and response to the IBDA, and their performance in food identification and quantification, were compared between the IBDA and real food visual estimations (RFVEs). No differences were found between the IBDA and RFVE in terms of food identification (67% vs. 71%) or quantification (±10% of estimated calories: 23% vs. 24%). A Spearman correlation analysis showed a moderate to high correlation for calorie estimates between the IBDA and RFVE (r ≥ 0.33~0.75, all p < 0.0001). Repeated IBDA training significantly improved students’ image-viewing skills [food identification: first semester: 67%; pretest: 77%; second semester: 84%) and quantification [±10%: first semester: 23%; pretest: 28%; second semester: 32%; and ±20%: first semester: 38%; pretest: 48%; second semester: 59%] and reduced absolute estimated errors from 27% (first semester) to 16% (second semester). Training also greatly improved the identification of omitted foods (e.g., condiments, sugar, cooking oil, and batter coatings) and the accuracy of food portion size estimates. The integration of an IBDA into dietetic courses has the potential to help students develop knowledge and skills related to “e-dietetics”.

scholarly journals Children's estimates of food portion size: the effect of timing of dietary interview on the accuracy of children's portion size estimates

2007 ◽  
Vol 99 (1) ◽  
pp. 185-190 ◽  
Author(s):  
E. Foster ◽  
M. O'Keeffe ◽  
J. N. S. Matthews ◽  
J. C. Mathers ◽  
M. Nelson ◽  
...  
Keyword(s):  
Assessment System ◽  
Portion Size ◽  
Assessment Tools ◽  
Nutrient Intakes ◽  
Portion Sizes ◽  
Food Portion ◽  
Size Estimates ◽  
Food Portion Size ◽  
Dietary Interview ◽  
Food Consumed

For food intakes to be converted into nutrient intakes a measure or estimate of the amount of food consumed is required. A number of methods have been developed to assist subjects in providing an estimate of portion size. Children's ability to use perception, conceptualisation and memory skills to estimate food portion size has not been investigated systematically. The aim of the present study was to test the effect of the timing of a dietary interview on the accuracy of estimates of food portion sizes made by children, using food photographs, food models and an interactive portion size assessment system, developed for use with children and based on portion sizes of foods consumed by children. Children (n 108) aged 4–14 years were supplied with known quantities of foods and asked to estimate the portion size of each food using each of the three portion size assessment tools. Interviews took place (a) with the food in view, (b) just after the child had eaten the food or (c) 24 h after the child had eaten the food. There were no significant differences in children's ability to estimate food portion size (either as served or as eaten) with timing of interview. That is, children were as accurate in their estimates of portion size 24 h after consuming the food as when the food was in view. Under these conditions many children were able to estimate food portion size utilising perception, conceptualisation and memory skills.

scholarly journals Accuracy of estimates of food portion size using food photographs – the importance of using age-appropriate tools

2006 ◽  
Vol 9 (4) ◽  
pp. 509-514 ◽  
Author(s):  
Emma Foster ◽  
John NS Matthews ◽  
Michael Nelson ◽  
Julie M Harris ◽  
John C Mathers ◽  
...  
Keyword(s):  
Original Data ◽  
Portion Size ◽  
Size Estimation ◽  
Average Accuracy ◽  
Portion Sizes ◽  
Food Portion ◽  
Age Appropriate ◽  
Portion Size Estimation ◽  
Size Estimates ◽  
Food Portion Size

AbstractBackgroundIn order to obtain a measure of nutrient intake, a measure or estimate of the amount of food consumed is required. Weighing foods imposes a large burden on subjects, often resulting in underreporting. Tools are available to assist subjects in providing an estimate of portion size and these include food photographs. The application of these tools in improving portion size estimation by children has not been investigated systematically.ObjectivesTo assess the accuracy with which children are able to estimate food portion sizes using food photographs designed for use with adults, and to determine whether the accuracy of estimates is improved when age-appropriate portion size photographs are provided.DesignOriginal data from three separate studies, on the accuracy of portion size estimates by adults using food photographs, by children using adult photographs and by children using age-appropriate photographs, are analysed and compared.SubjectsOne hundred and thirty-five adults aged 18 to 90 years and 210 children aged 4 to 11 years.ResultsChildren's estimates of portion sizes using age-appropriate food photographs were significantly more accurate (an underestimate of 1% on average) than estimates using photographs designed for use with adults (an overestimate of 45% on average). Accuracy of children's estimates of portion size using age-appropriate photographs was not significantly different from that of adults. Children overestimated a food's weight by 18% on average and adults underestimated by 5%.ConclusionsProviding children with food photographs depicting age-appropriate portion sizes greatly increases the accuracy of portion size estimates compared with estimates using photographs designed for use with adults.

scholarly journals Analysis of the National Adult Nutrition Survey (Ireland) and the Food4Me Nutrition Survey Databases to Explore the Development of Food Labelling Portion Sizes for the European Union

Nutrients ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 6 ◽  
Author(s):  
Michael Gibney ◽  
Aifric O’Sullivan ◽  
Albert Flynn ◽  
Janette Walton ◽  
Hannelore Daniel ◽  
...  
Keyword(s):  
European Union ◽  
Survey Data ◽  
Portion Size ◽  
Food Labelling ◽  
Food Diary ◽  
Nutrition Survey ◽  
Portion Sizes ◽  
Food Portion ◽  
Food Portion Size ◽  
The Eu

The present study set out to explore the option of developing food portion size for nutritional labelling purposes using two European Union (EU) dietary surveys. The surveys were selected as they differed in (a) methodologies (food diary versus food frequency questionnaire), (b) populations (Irish National Adult Nutrition Survey (NANS) versus a seven-country survey based on the pan EU study Food4Me), (c) food quantification (multiple options versus solely photographic album) and (d) duration (4 consecutive days versus recent month). Using data from these studies, portion size was determined for 15 test foods, where portion size was defined as the median intake of a target food when consumed. The median values of the portion sizes derived from both the NANS and Food4Me surveys were correlated (r = 0.823; p < 0.00) and the mean of the two survey data sets were compared to US values from the Recognized as Customarily Consumed (RACC) database. There was very strong agreement across all food categories between the averaged EU and the US portion size (r = 0.947; p < 0.00). It is concluded that notwithstanding the variety of approaches used for dietary survey data in the EU, the present data supports using a standardized approach to food portion size quantification for food labelling in the EU.

scholarly journals Development of an online database of typical food portion sizes in Irish population groups

2013 ◽  
Vol 2 ◽  
Author(s):  
Jacqueline Lyons ◽  
Janette Walton ◽  
Albert Flynn
Keyword(s):  
Dietary Assessment ◽  
Portion Size ◽  
Adult Males ◽  
Irish Population ◽  
Nutrition Survey ◽  
Cross Sectional ◽  
Portion Sizes ◽  
Food Portion ◽  
Adolescents And Adults ◽  
Typical Food

AbstractThe Irish Food Portion Sizes Database (available at www.iuna.net) describes typical portion weights for an extensive range of foods and beverages for Irish children, adolescents and adults. The present paper describes the methodologies used to develop the database and some key characteristics of the portion weight data contained therein. The data are derived from three large, cross-sectional food consumption surveys carried out in Ireland over the last decade: the National Children's Food Survey (2003–2004), National Teens' Food Survey (2005–2006) and National Adult Nutrition Survey (2008–2010). Median, 25th and 75th percentile portion weights are described for a total of 545 items across the three survey groups, split by age group or sex as appropriate. The typical (median) portion weights reported for adolescents and adults are similar for many foods, while those reported for children are notably smaller. Adolescent and adult males generally consume larger portions than their female counterparts, though similar portion weights may be consumed where foods are packaged in unit amounts (for example, pots of yoghurt). The inclusion of energy under-reporters makes little difference to the estimation of typical portion weights in adults. The data have wide-ranging applications in dietary assessment and food labelling, and will serve as a useful reference against which to compare future portion size data from the Irish population. The present paper provides a useful context for researchers and others wishing to use the Irish Food Portion Sizes Database, and may guide researchers in other countries in establishing similar databases of their own.

scholarly journals Analysis of the National Adult Nutrition Survey (Ireland) and the Food4Me Nutrition Survey Databases to Explore the Development of Food Labeling Portion Sizes for the European Union

2018 ◽  
Author(s):  
Michael J. Gibney ◽  
Aifric O'Sullivan ◽  
Albert Flynn ◽  
Janette Walton ◽  
Hannelore Daniel ◽  
...  
Keyword(s):  
European Union ◽  
Survey Data ◽  
Portion Size ◽  
The European Union ◽  
Food Diary ◽  
Nutrition Survey ◽  
Portion Sizes ◽  
Food Portion ◽  
Food Portion Size ◽  
The Eu

The present study set out to explore the option of developing food portion size for nutritional labelling purposes using two European Union (EU) dietary surveys. The surveys were selected as they differed in (a) methodologies (food diary v food frequency questionnaire), (b) populations (Irish National Adult Nutrition Survey: NANS) versus a seven-country based on the pan EU study Food4Me), (c) food quantification (multiple options v, solely photographic album) and (d) duration (4 consecutive days v recent month). Using data from these studies, portion size was determined for 15 test foods, where portion size was defined as the median intake of a target food when consumed. The median values of the portion sizes derived from both the NANS and Food4Me surveys were correlated (r = 0.823; P&lt;0.00) and the mean of the two survey data sets were compared to US values from the Recognized as Customarily Consumed (RACC) database. There was very strong agreement across all food categories between the averaged EU and the US portion size (r = 0.947; P&lt;0.00). It is concluded that notwithstanding the variety of approaches used for dietary survey data in the EU, the present data supports using a standardized approach to food portion size quantification for food labelling in the EU.

scholarly journals Model-based measurement of food portion size for image-based dietary assessment using 3D/2D registration

2013 ◽  
Vol 24 (10) ◽  
pp. 105701 ◽  
Author(s):  
Hsin-Chen Chen ◽  
Wenyan Jia ◽  
Yaofeng Yue ◽  
Zhaoxin Li ◽  
Yung-Nien Sun ◽  
...  
Keyword(s):  
Dietary Assessment ◽  
Portion Size ◽  
Model Based ◽  
Food Portion ◽  
Food Portion Size

scholarly journals An evaluation of a virtual atlas of portion sizes (VAPS) mobile augmented reality for portion size estimation

2020 ◽  
Author(s):  
Meng Chun Lam ◽  
Nur Afyfah Suwadi ◽  
Adibah Huda Mohd Zainul Arifien ◽  
Bee Koon Poh ◽  
Nik Shanita Safii ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Dietary Assessment ◽  
3D Models ◽  
Health Science ◽  
Portion Size ◽  
Size Estimation ◽  
Portion Sizes ◽  
Food Portion ◽  
Science Group ◽  
Portion Size Estimation

Abstract Food portion size estimation is a critical yet challenging task in dietary assessment. Augmented reality technology enables the presentation of food dimensions and volume in a virtual three-dimensional object. It has the potential to improve perception and estimation of portion sizes. This study aims to develop and evaluate a novel mobile augmented reality application, namely Virtual Atlas of Portion Sizes (VAPS), as a portion size estimation aid. The development methodology of VAPS involves food photography, reconstruction of 3D models using photogrammetry method and presenting them in an AR environment. The 3D food models displayed in either semi-transparent or vivid mode for users to perform food portion estimation. Users can then resize and rotate the 3D models to fit the virtual model with the actual food. A total of thirty-six participants were involved in the evaluation and were divided into a health science and a non-health science background group. VAPS received good usability level with 76 SUS score. In terms of task completion time, unsurprisingly, the health science group performed faster. However, both groups have equivalent accuracy on the food portion estimation task using VAPS: 22.5% for non-health science group and 26.6% for health science group. The health science group liked and have better accuracy in vivid 3D food models (37.5%). Meanwhile, the non-health science group preferred semi-transparent 3D food models, but the accuracy is not significantly different between semi-transparent (25%) and vivid 3D food model (20%). Results demonstrate the potential of VAPS to aid in portion size estimation for dietary assessment, and participants’ feedback will be incorporated in the future for improvement of the app.

A food portion size measurement system for image-based dietary assessment

2009 ◽  
Author(s):  
Wenyan Jia ◽  
Ruizhen Zhao ◽  
Ning Yao ◽  
John D. Fernstrom ◽  
Madelyn H. Fernstrom ◽  
...  
Keyword(s):  
Measurement System ◽  
Dietary Assessment ◽  
Portion Size ◽  
Size Measurement ◽  
Food Portion ◽  
Food Portion Size

Influence of nutrition labelling on food portion size consumption

Appetite ◽  
2013 ◽  
Vol 65 ◽  
pp. 153-158 ◽  
Author(s):  
Mary T. McCann ◽  
Julie M.W. Wallace ◽  
Paula J. Robson ◽  
Kirsten L. Rennie ◽  
Tracy A. McCaffrey ◽  
...  
Keyword(s):  
Portion Size ◽  
Nutrition Labelling ◽  
Food Portion ◽  
Food Portion Size

scholarly journals Validity of photographs for food portion estimation in a rural West African setting

2008 ◽  
Vol 11 (6) ◽  
pp. 581-587 ◽  
Author(s):  
L Huybregts ◽  
D Roberfroid ◽  
C Lachat ◽  
J Van Camp ◽  
P Kolsteren
Keyword(s):  
West African ◽  
Portion Size ◽  
Rural Setting ◽  
Group Level ◽  
Size Estimation ◽  
Childbearing Age ◽  
Food Items ◽  
Food Portion ◽  
Mean Differences ◽  
Food Portion Size

AbstractObjectiveTo validate food photographs for food portion size estimation of frequently consumed dishes, to be used in a 24-hour recall food consumption study of pregnant women in a rural environment in Burkina Faso. This food intake study is part of an intervention evaluating the efficacy of prenatal micronutrient supplementation on birth outcomes.SubjectsWomen of childbearing age (15–45 years).DesignA food photograph album containing four photographs of food portions per food item was compiled for eight selected food items. Subjects were presented two food items each in the morning and two in the afternoon. These foods were weighed to the exact weight of a food depicted in one of the photographs and were in the same receptacles. The next day another fieldworker presented the food photographs to the subjects to test their ability to choose the correct photograph.ResultsThe correct photograph out of the four proposed was chosen in 55% of 1028 estimations. For each food, proportions of underestimating and overestimating participants were balanced, except for rice and couscous. On a group level, mean differences between served and estimated portion sizes were between −8.4% and 6.3%. Subjects who attended school were almost twice as likely to choose the correct photograph. The portion size served (small vs. largest sizes) had a significant influence on the portion estimation ability.ConclusionsThe results from this study indicate that in a West African rural setting, food photographs can be a valuable tool for the quantification of food portion size on group level.

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