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. Attached Files Name Description MIMEType Size Downloads pendergast-evaluationof-2017.pdf Published version application/pdf 867.41KB 278 Title Evaluation of a smartphone food diary application using objectively measured energy expenditure Author(s) Pendergast, Felicity J. Ridgers, Nicola D. orcid.org/0000-0001-5713-3515 Worsley, Anthony orcid.org/0000-0002-4635-6059 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 Persistent URL http://hdl.handle.net/10536/DRO/DU:30092317 Document type: Journal Article Collections: Faculty of Health School of Exercise and Nutrition Sciences Institute for Physical Activity and Nutrition Open Access Collection Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. 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. Versions Version Filter Type Tue, 28 Mar 2017, 10:54:56 EST Tue, 28 Mar 2017, 10:55:41 EST Wed, 29 Mar 2017, 04:00:28 EST Wed, 29 Mar 2017, 07:32:41 EST Fri, 14 Apr 2017, 06:06:09 EST Sat, 22 Apr 2017, 02:31:56 EST Tue, 13 Jun 2017, 14:18:34 EST Tue, 13 Jun 2017, 14:20:58 EST Tue, 13 Jun 2017, 14:26:41 EST Fri, 07 Sep 2018, 12:36:16 EST Filtered Full Citation counts:   Cited 30 times in TR Web of Science Cited 36 times in Scopus Search Google Scholar Access Statistics: 451 Abstract Views, 279 File Downloads  -  Detailed Statistics Created: Tue, 28 Mar 2017, 10:55:41 EST

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