Establishment of Computer Aided System in Nutritional Assessment - Weight Control System

• Main Authors: Ting-Ting Chuang, 莊婷婷
• Other Authors: Ying-Yueh Chu
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/37107087168836613349

碩士 === 中國文化大學 === 生活應用科學研究所 === 87 === The purpose of this study was to design a computer added weight control system by using software Visual Basic 6.0. The system was suitable for any age above 3 years old by manipulating personal computer. The system will achieve the goal of nutrition education to maintain the ideal body weight. The system consists of three parts: ideal body weight calculation、weight reduction system and physical fitness. In the first part, in accordance with user''s age、gender、height、weight and daily physical activity to figure his daily calorie need and range of ideal body weight. When user is younger than 19 (age 19 counted), system use weight-height index (WHI) to calculate his ideal body weight. If person is above 19, system applies body mass index (BMI) to calculate his ideal body weight. For calculation of daily energy requirement, the figures and the formulas of basal metabolism rate (BMR) factor and physical activity index are adapted to from the Department of Health. Next, the system will give the proper advice of the diet and exercise plan for the people whose body weight are ideal or lighter. In the diet plan, the carbohydrate、protein and fat contain was 58-68%、10-14% and 20-30% of total calorie. The system recommended the user whose weight was 10 % less than ideal body weight to intake extra 500 calories of the daily energy intake. The energy expenditure by exercise was counted for expending 200 calories estimated by resting metabolism rate (MET). If user''s weight was within the range of ideal body weight or lighter, we recommended him to take exercise more than 3 times a week. If one was overweight or obese, it will connect to the second part: weight-reduction system. The second part was weight-reduction system. At first, we provide user a diet plan with 300 calories lower than the daily energy intake and 200 calories exercise expenditure. If user wants to decide weight reduction goal by himself, he can choose one of time periods which system provides. The system will calculate how many calorie intakes should be reduced according to users body weight and time periods for weight reduction. The system won''t provide any weight reduction suggestion if daily food intake was less than 1200 calories or the reduction of energy intake was over 1000 calories. After that, user also can choose the pattern energy expenditure and intake; therefore, the system will look for apposite diet plan and physical activity chosen by the system was appropriate to individual case. If user was younger than 12, or his body weight was overweight two times of ideal body weight, system won''t suggestion for losing weight; however, the system advice him to see a doctor or nutritionist for consulting. Besides that, system also provide nutrition education about obesity, including the epidemiology of obesity、the complication of obesity、the cooking tips for high and low calorie food and correct concept for eating-out. The third part was physical fitness. User inputs the type of exercise and duration time; system will output the exercise energy expenditure for each individual event and daily total exercise energy expenditure. Besides, it provides the maximum heart rate calculation、definition and introduction of aerobic exercise、the method to determine healthy related physical fitness、simple stretch and demonstration of aerobics in order to give the user basic knowledge about healthy related exercise. Finally, the system reviews how much daily energy intakes by connecting to nutritional component analysis system and how much energy expended by daily activity and exercise to estimate the balance between energy intake and expenditure. In conclusion, this system not only provides the calculation of ideal body weight and daily calorie need、suggestion of diet plan、physical activity and energy balance analysis, but also give user a correct concept of weight reduction with physical fitness. The system could be a personal software available for everyone in hospital、school and home.