| Summary: | 碩士 === 慈濟大學 === 醫學資訊學系碩士班 === 99 === Using exercise measurement system can promote university students’ moderate to vigorous physical activity(MVPA) who participated an extracurricular exercise program, but there have no effect upon their exercise motives. The research indicates that weight management is one of the main university students’ exercise motives. Self-weighing is a simple and convenient way to maintain our personal health. It can not only help people for their weight management, but also may enhance students’ exercise motives. We Implemented regular self-weighing in physical education classes of university, and analyzed the impact of the policy of students’ extracurricular exercise program and body composition. The experiment lasted for 18 weeks. In experiment period, we had collected the exercise quantity of the participants. Participants were freshmen recruited in the first week from physical education(PE) classes who participated an extracurricular exercise program. In this program, participants engaged in moderate to vigorous running in an athletic field, and their exercise records were recorded by an automatic measurement system. Participants could view their records on the website. The second to the fifth week was our baseline, and we pretested participants’ Body Mass Index(BMI), Body Fat Percentage, Locus of Causality for Exercise(LCE), and Exercise Motivations Inventory in the fifth week. After the pretest, participants were randomly assigned to a control group(N=36) or to a intervention group(N=34). The sixth to the seventeenth week was our intervention period, the intervention group under the PE teacher’s supervising had to self-weigh at least once per month by using the system. In the eighteenth week, we implemented posttest. The test items were the same with the ones in the pretest. The final effective samples were 32 of 36 in the control group and 19 of 34 in the intervention group. Finally, the male and the female data were separately analyzed by descriptive statistics, Mann-Whitney U test, Wilcoxon signed-rank test and Spearman’s rank correlation coefficient analysis. The Results showed that (1) No matter for male or female, the BMI and LCE in both groups were unchanged. (2) The body fat percentage of female intervention group was significantly increased, but did not happen in both male and female control group. (3) For the male participants, the intervention group increased their exercise days (p=.008) and Energy Expenditure(EE) (p=.008), but the control group remained unchanged; for the female participants, both
groups increased the exercise quantity, and there was no significant differences of the increasing amount between two groups. (4) For the exercise motivations inventory, the male intervention group would exercise more due to the factors of the weight management (p= .014), the appearance (p=.004), the ill-health avoidance (p=0.23), and the health pressures (p=.007). Nevertheless, not only the male control group but also both the female control group and intervention group remained the same as usual. In conclusion, with regular self-weighing, male university students increased their exercise quantity in extracurricular exercise programs and the emphasis of exercise motives, but the intervention had no effect on LCE of all university students. However, female university students may use wrong way to loss their weight when only required self-weighting, so such the intervention needs to provide some nutrition-related knowledge to establish the healthy weight management methods.
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