Validation of nutrient intake of smartphone application through comparison of photographs before and after meals
10.4163/jnh.2020.53.3.319
- Author:
Hyejin LEE
1
;
Eunbin KIM
;
Su Hyeon KIM
;
Haeun LIM
;
Yeong Mi PARK
;
Joon Ho KANG
;
Heewon KIM
;
Jinho KIM
;
Woong-Yang PARK
;
Seongjin PARK
;
Jinki KIM
;
Yoon Jung YANG
Author Information
1. Department of Clinical Nutrition, Graduate School of Public Health, Dongduk Women's University, Seoul 02748, Korea
- Publication Type:Research Article
- From:Journal of Nutrition and Health
2020;53(3):319-328
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Purpose:This study was conducted to evaluate the validity of the Gene-Health application in terms of estimating energy and macronutrients.
Methods:The subjects were 98 health adults participating in a weight-control intervention study. They recorded their diets in the Gene-Health application, took photographs before and after every meal on the same day, and uploaded them to the Gene-Health application. The amounts of foods and drinks consumed were estimated based on the photographs by trained experts, and the nutrient intakes were calculated using the CAN-Pro 5.0 program, which was named ‘Photo Estimation’. The energy and macronutrients estimated from the Gene-Health application were compared with those from a Photo Estimation. The mean differences in energy and macronutrient intakes between the two methods were compared using paired t-test.
Results:The mean energy intakes of Gene-Health and Photo Estimation were 1,937.0 kcal and 1,928.3 kcal, respectively. There were no significant differences in intakes of energy, carbohydrate, fat, and energy from fat (%) between two methods. The protein intake and energy from protein (%) of the Gene-Health were higher than those from the Photo Estimation. The energy from carbohydrate (%) for the Photo Estimation was higher than that of the Gene-Health. The Pearson correlation coefficients, weighted Kappa coefficients, and adjacent agreements for energy and macronutrient intakes between the two methods ranged from 0.382 to 0.607, 0.588 to 0.649, and 79.6% to 86.7%, respectively.
Conclusion:The Gene-Health application shows acceptable validity as a dietary intake assessment tool for energy and macronutrients. Further studies with female subjects and various age groups will be needed.
