컴퓨터 사용시간에 따른 중학생의 섭식행동, 영양지식 및 영양소 섭취상태 비교

Abstract

This study was intended to investigate whether the computer use hours affect student's physical development, dietary patterns, nutrition knowledge scores, dietary intakes and acquirement of dietary information in middle school students or not. Two-hundred and ninety one middle school students surveyed during December, 2009 and January, 2010. Participants were divided into 2 groups: long-time computer user(≥ 2hrs/day) and Short-time computer user(< 2hrs/day).

(1) The mean age is boys and girls student 14.2. Average height and weight of boys were 164.2 cm and 54.3 kg and those girls 157.9 cm, 47.88 kg. They mostly answered their health conditions were 'well'.

(2) All of them were using computer and most of them had used it more than five years. The main purpose of boy was for the computer game(79.0%), and girls was for chating(29.4%) & Listenin to music and watching movie(28.8%) (p<0.001). The frequency of computer using both boys and girls was everyday (45%), and the average of using time per day was less than one or two hours (40.9%).

(3) The most acquisition of information on food life mostly was TV and radio(32.6%). They were searching the information on food life through Internet less than 1-2 times for a month. Boys and girls mostly aimed to acquire information on homework(41.9%). Satisfaction degree about searching they said was generally 'medium', As a problem of the site on food life, boys 'Don's well know site(32.6%)' and girls 'Incorrenctness information(35.3%)' (p<0.05).

(4) The longer the computer use, the more body weight, height and BMI (p<0.05). Also, The long-time computer user : using more than five years (p<0.05), using everyday (p<0.001), the main purpose of the long-time computer user was for computer game (p<0.001). The long-time computer user tended to higher use PC room than the short-time computer use.

(5) Most of students is sleeping hours '7-9 hours/day'(54.3%), exercising hours '1-3 times/week'(44.7%), time spent for watching TV '1-3 hours/day'(55.6%). In particular, the longer the computer use the more watching TV (p<0.001).

(6) As for the computer use dietary habits and life style were influenced. Dietary habit changes score incurred by computer use of the long-time computer user was lower than that of short-time computer user (p<0.05). In case of dietary habit changes incurred by computer use, the long-time computer use had inferior dietary habits: skipping meals, faster the eating, redusing the amount of meal, appetite, acute indigestion, eating snakes, drinking caffeinated beverages, sleeping trouble(p<0.001).

(7) Dietary habits score of the long-time computer user (58.7 points) was lower than that of short-time computer user (55.9 points). The long-time computer user consumed more overeat, more the fast foods, carbonated drinks, alcoholic beverages and junk foods. Also, The long-time computer user consumed less the various and side dishes(p<0.05)

(8) The highest score on nutrition knowledge examination is ' A lake of iron intake causes anemia ', and the lowest score is ' A balanced diet is an intake of four kinds nutrient. '. Nutrition knowledge score of the longer the computer use, the lower variety of fruits & vegetables intake, trans fatty acid, cholesterol. On the other hand, Nutrition knowledge score of the longer the computer use, the more Vitamin E and water function.

(9) The long-time computer user tended to have lower intakes of dietary fiber, Ca and vitamin C without significance. And It the long-time computer user consumed higher Na(p<0.001), cholesterol.

In conclusion, the percentage of computer usage for middle school students in the study was rather higher. The result of present study that the longer the time using computer was, the lower their scores of behavior of food life and knowledge on nutrition were suggests it may have negative effect by irregular meals. By collecting undesirable food life resulted from computer usage and teaching righteous knowledges on balanced nutrition, it is necessary to serve them systemic nutrition education so as to make them practice it by themselves.