Search

The weight loss occurs if we eat fewer calories than we burn. The rate of burn calories depends on both metabolism and body composition. This paper discusses the dynamics of weight loss by regulating caloric intake. Therefore, it is necessary to prepare a daily diet menu based on caloric intake. Calories required by each range from 2000-2500 kcal. We propose a simple mathematical model used to simulate the individual weight change to understand the influence of menu recommendation for individuals to lose or gain weight. We develop one dimensional differential equation of weight change and linear programming for the menu schedule. The weight change model is constructed using the concept of energy balance equation between energy intake and energy expenditure. Linear programming is applied to select the diet menu for breakfast, morning tea, lunch, evening tea and dinner with noticed aspects include the total calories and nutritional components (carbohydrates, protein, fat, and fiber). [ABSTRACT FROM AUTHOR]

A randomized field experiment with 53 adolescents tests the effects of a mobile phone game on likelihood to eat breakfast. Manipulations included varying positive and negative feedback from a virtual pet as it responded to photos of participants' breakfast meals. Additional tests compared the pet game to isolated formal features of the game such as sending in photos of breakfast consumed. Results indicate that participants with a virtual pet enabled to exhibit both positive and negative expressions were twice as likely to eat breakfast than those with a pet that was programmed to remain, at worst, in a visually neutral state (positive feedback only) and participants assigned to a condition that did not involve care for a pet but required breakfast photos. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]