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Wearable cameras can reduce dietary under-reporting: doubly labelled water validation of a camera-assisted 24 h recall

Gemming, Luke, Rush, Elaine, Maddison, Ralph, Doherty, Aiden, Gant, Nicholas, Utter, Jennifer and Ni Mhurchu, Cliona 2015, Wearable cameras can reduce dietary under-reporting: doubly labelled water validation of a camera-assisted 24 h recall, British journal of nutrition, vol. 113, no. 2, pp. 284-291, doi: 10.1017/S0007114514003602.

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Title Wearable cameras can reduce dietary under-reporting: doubly labelled water validation of a camera-assisted 24 h recall
Author(s) Gemming, Luke
Rush, Elaine
Maddison, RalphORCID iD for Maddison, Ralph orcid.org/0000-0001-8564-5518
Doherty, Aiden
Gant, Nicholas
Utter, Jennifer
Ni Mhurchu, Cliona
Journal name British journal of nutrition
Volume number 113
Issue number 2
Start page 284
End page 291
Total pages 8
Publisher Cambridge University Press
Place of publication Cambridge, Eng.
Publication date 2015-01
ISSN 1475-2662
Keyword(s) Dietary studies
Nutrition assessment
SenseCam
Wearable cameras
Adult
Basal Metabolism
Cross-Sectional Studies
Data Accuracy
Diet
Energy Intake
Energy Metabolism
Female
Humans
Male
Mental Recall
Monitoring, Ambulatory
New Zealand
Portion Size
Self Report
Sex Characteristics
Snacks
Video Recording
Young Adult
Summary Preliminary research has suggested that wearable cameras may reduce under-reporting of energy intake (EI) in self-reported dietary assessment. The aim of the present study was to test the validity of a wearable camera-assisted 24 h dietary recall against the doubly labelled water (DLW) technique. Total energy expenditure (TEE) was assessed over 15 d using the DLW protocol among forty adults (n 20 males, age 35 (sd 17) years, BMI 27 (sd 4) kg/m2 and n 20 females, age 28 (sd 7) years, BMI 22 (sd 2) kg/m2). EI was assessed using three multiple-pass 24 h dietary recalls (MP24) on days 2-4, 8-10 and 13-15. On the days before each nutrition assessment, participants wore an automated wearable camera (SenseCam (SC)) in free-living conditions. The wearable camera images were viewed by the participants following the completion of the dietary recall, and their changes in self-reported intakes were recorded (MP24+SC). TEE and EI assessed by the MP24 and MP24+SC methods were compared. Among men, the MP24 and MP24+SC measures underestimated TEE by 17 and 9%, respectively (P< 0.001 and P= 0.02). Among women, these measures underestimated TEE by 13 and 7%, respectively (P< 0.001 and P= 0.004). The assistance of the wearable camera (MP24+SC) reduced the magnitude of under-reporting by 8% for men and 6% for women compared with the MP24 alone (P< 0.001 and P< 0.001). The increase in EI was predominantly from the addition of 265 unreported foods (often snacks) as revealed by the participants during the image review. Wearable cameras enhance the accuracy of self-report by providing passive and objective information regarding dietary intake. High-definition image sensors and increased imaging frequency may improve the accuracy further.
Language eng
DOI 10.1017/S0007114514003602
Field of Research 111199 Nutrition and Dietetics not elsewhere classified
0702 Animal Production
1111 Nutrition And Dietetics
0908 Food Sciences
Socio Economic Objective 920499 Public Health (excl. Specific Population Health) not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30081444

Document type: Journal Article
Collection: Centre for Physical Activity and Nutrition Research
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