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Evaluation of a smartphone food diary application using objectively measured energy expenditure

Pendergast, Felicity J., Ridgers, Nicola D., Worsley, Anthony and McNaughton, Sarah A. 2017, Evaluation of a smartphone food diary application using objectively measured energy expenditure, International journal of behavioral nutrition and physical activity, vol. 14, no. 1, pp. 130-10, doi: 10.1186/s12966-017-0488-9.

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Title Evaluation of a smartphone food diary application using objectively measured energy expenditure
Author(s) Pendergast, Felicity J.
Ridgers, Nicola D.ORCID iD for Ridgers, Nicola D. orcid.org/0000-0001-5713-3515
Worsley, Anthony
McNaughton, Sarah A.ORCID iD for McNaughton, Sarah A. orcid.org/0000-0001-5936-9820
Journal name International journal of behavioral nutrition and physical activity
Volume number 14
Issue number 1
Article ID 30
Start page 130
End page 10
Total pages 10
Publisher BioMed Central
Place of publication London, Eng.
Publication date 2017-03-14
ISSN 1479-5868
Keyword(s) dietary assessment
energy intake
evaluation
SenseWear armband
smartphone applications
Summary BACKGROUND: Dietary assessment methods are limited in their ability to adequately measure food and beverage consumption. Smartphone applications may provide a novel method of dietary assessment to capture real-time food intake and the contextual factors surrounding eating occasions. The aim of this study is to evaluate the capability of a Smartphone meal diary app ("FoodNow") to measure food intake using a validated objective method for assessing energy expenditure among young adults. METHODS: Participants (18-30 years) used FoodNow over four non-consecutive days recording all eating occasions through a combination of written text, and/or optional images and voice recordings. A series of contextual questions were also completed. Participants wore the validated SenseWear Armband (BodyMedia Inc, USA) during the same period to measure free-living energy expenditure. Intra-class correlation coefficients (ICC) estimated the reliability of FoodNow to measure estimated energy intake compared to measured energy expenditure. RESULTS: Ninety participants (71 female, 19 male; mean age = 24.9 ± 4.1 years) were recruited to use the FoodNow app to record their eating occasions. Thirteen were excluded as they did not meet minimum requirements for number of reporting days (n = 3) or SenseWear Armband wear time (5 days of 11 h), while 21 participants were excluded after being identified as mis-reporters (Huang method). Among the remaining sample (n = 56), reliability between estimated energy intake and measured energy expenditure was high (ICC, 95% CI: 0.75, 0.61-0.84). CONCLUSIONS: FoodNow is a suitable method for capturing estimated energy intake data from young adults. Despite wide levels of agreement at the individual level (-3709 kJ to 2056 kJ), at the group level, FoodNow appears to have potential as a dietary assessment tool. This new dietary assessment method will offer an alternative and novel method of dietary assessment which is capable of collecting both estimated energy intake and contextual factors surrounding eating occasions. Information collected may be used to inform future public health messages or research interventions.
Language eng
DOI 10.1186/s12966-017-0488-9
Field of Research 111199 Nutrition and Dietetics not elsewhere classified
11 Medical And Health Sciences
13 Education
Socio Economic Objective 920411 Nutrition
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID ARC DP 130100713
ARC FT 100100581
Copyright notice ©2017, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30092317

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.