TY  - JOUR
JF  - The journal of nutrition, health & aging (JNHA)
A1  - Timon, CM
A1  - Cooper, SE
A1  - Barker, ME
A1  - Astell, AJ
A1  - Adlam, T
A1  - Hwang, F
A1  - Williams, EA
UR  - https://doi.org/10.1007/s12603-017-0937-9
N1  - This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
IS  - 2
VL  - 22
SP  - 230
KW  - Science & Technology
KW  -  Life Sciences & Biomedicine
KW  -  Geriatrics & Gerontology
KW  -  Nutrition & Dietetics
KW  -  Portion size assessment
KW  -  older adults
KW  -  young adults
KW  -  nutritionists
KW  -  DIETARY ASSESSMENT
KW  -  PHOTOGRAPHY
KW  -  ACCURACY
KW  -  RELIABILITY
KW  -  VALIDATION
KW  -  VALIDITY
KW  -  SYSTEM
KW  -  NANA
ID  - discovery10110181
N2  - Objectives
To investigate the ability of older adults, younger adults and nutritionists to assess portion size using traditional methods versus a computer-based method. This was to inform the development of a novel dietary assessment method for older adults ?The NANA system?.

Design
Older and younger adults assessed the portion size of self-served portions of foods from a buffet style set up using traditional and computerised portion size assessment aids. Nutritionists assessed the portion size of foods from digital photographs using computerised portion size aids. These estimates were compared to known weights of foods using univariate analyses of covariance (ANCOVA).

Setting
The University of Sheffield, United Kingdom.

Subjects
Forty older adults (aged 65 years and over), 41 younger adults (aged between 18 and 40 years) and 25 nutritionists.

Results
There was little difference in the abilities of older and younger adults to assess portion size using both assessment aids with the exception of small pieces morphology. Even though the methods were not directly comparable among the test groups, there was less variability in portion size estimates made by the nutritionists.

Conclusion
Older adults and younger adults are similar in their ability to assess food portion size and demonstrate wide variability of estimation compared to the ability of nutritionists to estimate portion size from photographs. The results suggest that the use of photographs of meals consumed for portion size assessment by a nutritionist may improve the accuracy of dietary assessment. Improved portion size assessment aids are required for all age groups.
PB  - SPRINGER FRANCE
TI  - A comparison of food portion size estimation by older adults, young adults and nutritionists
EP  - 236
Y1  - 2018/02//
AV  - public
ER  -