TY - JOUR

T1 - Evaluation of a digital method to assess evening meal intake in a free-living adult population

AU - Lassen, Anne Dahl

AU - Poulsen, Sanne

AU - Ernst, Lotte

AU - Kaae Andersen, Klaus

AU - Biltoft-Jensen, Anja

AU - Tetens, Inge

PY - 2010

Y1 - 2010

N2 - BACKGROUND: In recent years new applications of technologies, including digital images, to capture dietary behaviour in real time have been explored.OBJECTIVES: To validate a digital method for estimating evening meal intake in a free-living adult population, and to examine the feasibility of the method for recording evening meal intake over a prolonged period of time.DESIGN: The digital method was compared against weighed records of 19 participants' usual evening meals for five consecutive days. Two trained image analysts independently estimated the weight of individual foods within the meals into major food categories, and the nutrient content was calculated. A second study included interviews with 28 participants recording their evening meals on weekdays for three consecutive weeks to get their perspective on the feasibility of the method.RESULTS: High correlation coefficients between the digital method and weighed records were found for all measured food categories and nutrients. Comparable means and acceptable limits of agreement (mean difference +/- 2 SD) were found with regard to macronutrient distribution (e.g. fat content -5 to 6 E%), energy density (-75 to 91 kJ/100 g), and energy-adjusted foods (e.g. fruit and vegetable content -241 to 236 g/10 MJ). The majority of the participants expressed satisfaction with the method and were willing to record their evening meals for 1 month or more using the digital method.CONCLUSION: The digital method is valid and feasible for evening meal estimation in real-time where a prolonged recording period of participants' meals is needed.

AB - BACKGROUND: In recent years new applications of technologies, including digital images, to capture dietary behaviour in real time have been explored.OBJECTIVES: To validate a digital method for estimating evening meal intake in a free-living adult population, and to examine the feasibility of the method for recording evening meal intake over a prolonged period of time.DESIGN: The digital method was compared against weighed records of 19 participants' usual evening meals for five consecutive days. Two trained image analysts independently estimated the weight of individual foods within the meals into major food categories, and the nutrient content was calculated. A second study included interviews with 28 participants recording their evening meals on weekdays for three consecutive weeks to get their perspective on the feasibility of the method.RESULTS: High correlation coefficients between the digital method and weighed records were found for all measured food categories and nutrients. Comparable means and acceptable limits of agreement (mean difference +/- 2 SD) were found with regard to macronutrient distribution (e.g. fat content -5 to 6 E%), energy density (-75 to 91 kJ/100 g), and energy-adjusted foods (e.g. fruit and vegetable content -241 to 236 g/10 MJ). The majority of the participants expressed satisfaction with the method and were willing to record their evening meals for 1 month or more using the digital method.CONCLUSION: The digital method is valid and feasible for evening meal estimation in real-time where a prolonged recording period of participants' meals is needed.

KW - Food intake

KW - Diet assessment

KW - Digital photography

KW - Dinner meals

U2 - 10.3402/fnr.v54i0.5311

DO - 10.3402/fnr.v54i0.5311

M3 - Journal article

C2 - 21085516

VL - 54

JO - Scandinavian Journal of Nutrition/Naringsforskning, Supplement

JF - Scandinavian Journal of Nutrition/Naringsforskning, Supplement

SN - 1102-6510

M1 - 5311

ER -