| Summary: | 碩士 === 國立臺灣大學 === 生化科技學系 === 99 === Background: Development and progress of computer tools, people can access a large number of nutrition and health information through the Internet conveniently and quickly. Internet become a potential new pathway to improve the nutritional health. College students is a potentially important target group to promote healthy lifestyle for adult. However, college students lack enough knowledge of nutrition and health. Taiwan Nutrition Information Website (TNIW) is nutrition tools firstly designed for personally dietary management inTaiwan. TNIW provides enquiry of ingredients and recipes for user, and establishes dietary record. Purpose: 1. The usability of TNIW functions: the "Enquiry" and "Personally dietary record." 2. The influence of TNIW of Dietary Intake of College Students. Methods: Users recruited from the National Taiwan University General Course students, male and female informal, with the computer and can not rule out the survey, a total of 68 people. Study period for the March 2010 ~ June 2010. This study is divided into two phases. The first stage is preparing research tools. Designing the usability evaluation questionnaire and dietary questionnaire (KAP survey and the FFQ). The second stage is data collection for users. At frist week, user answer pre-test dietary questionnaire. At third week is the usability of TNIW functions: the "Enquiry" evaluation questionnaire. At fourth week is the usability of TNIW functions: the "Personally dietary record" evaluation questionnaire. In 5~12 week, users use TNIW and establishes dietary record at least 4 times. At 12 week, user answer Website usage evaluation questionnaire and post-test dietary questionnaire. Results: In the usability of TNIW, the "Enquiry" of the interface operation, degree of difficulty of data access, data relevance, performance and satisfaction items are better than the "Personally dietary record." After 2 months of using the website, users will to using TNIW decrease, and users’ behavior are mostly early stage of change. KAP survey found that users significantly increase a specific nutritional knowledge “nutrient density.” FFQ found that users’ food intake frequency increased significantly, such as cercel, vegetables, fruits, poultry meat and seafood, and other proteins (eggs and beans), milk. Conclusion: The usability of TNIW''s "Enquiry" function is better . After 2 months of using the site, user improve s a specific nutritional knowledge and dietary intake.
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