- Title
- Can a web-based food record accurately assess energy intake in overweight and obese women? a pilot study
- Creator
- Hutchesson, M. J.; Truby, H.; Callister, R.; Morgan, P. J.; Davies, P. S. W.; Collins, C. E.
- Relation
- SP Health Co.
- Relation
- Journal of Human Nutrition and Dietetics Vol. 26, Issue 1, Suppl., p. 140-144
- Publisher Link
- http://dx.doi.org/10.1111/jhn.12094
- Publisher
- Wiley-Blackwell Publishing
- Resource Type
- journal article
- Date
- 2013
- Description
- Background: Innovative dietary intake measurement tools, such as web-based food records, are becoming increasingly available for self-monitoring. However, the accuracy of this method has not been well studied. This pilot study aimed to evaluate the accuracy of energy intake (EI) estimated by a web-based food record, by comparison with total energy expenditure (TEE) measured by doubly-labelled water (DLW) in overweight and obese women. Methods: Total energy expenditure (TEE) was assessed in weight stable (±1 kg) women (n = 9), with a mean (SD) age of 34.5 (11.3) years and body mass index of 29.2 (1.4) kg m⁻² over 10 days using the DLW technique. All food and beverages were self-reported for 9-days using a web-based food record and mean daily EI calculated. Food record accuracy was assessed by calculating the absolute (EI − TEE) and percentage (EI/TEE × 100) differences between EI and TEE. Women were identified as under-reporters of EI based on the 95% confidence limits of the expected EI : TEE of 1. Results: The mean (SD) self-reported EI was 8351 (1225) kJ day⁻¹ [1996 (293) kcal day⁻¹] and TEE was 10 648 (1774) kJ day⁻¹ [2545 (424) kcal day⁻¹]. The mean (SD) absolute difference in self-reported EI and TEE was −2301 (1535) kJ day⁻¹ [−550 (367) kcal day⁻¹], representing a mean reporting accuracy of 79.6% (14.1%), with four participants under-reporting EI. Conclusions: This pilot study highlights the opportunity for the use of the Internet as a novel medium for recording and assessing dietary intake. Although further research is needed in more diverse population groups, the accuracy of web-based food records for assessing EI appears to be consistent with other published dietary intake methods.
- Subject
- doubly-labelled water; energy intake; internet; validation study
- Identifier
- http://hdl.handle.net/1959.13/1045754
- Identifier
- uon:14517
- Identifier
- ISSN:0952-3871
- Language
- eng
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