2006 年 2 巻 p. 1-8
The purpose of this study was to evaluate the relationship between sedentary behavior and parameters related to physical activity in Japanese male university students. Further, we examined the decisional balance for exercise, which is a correlation factor of physical inactivity. The study participants were 638 male freshmen from an institute of technology in Japan who were rated on the time spent on sedentary behavior and the use of TV/PC as a measure of sedentary behavior. The physical activity assessment scale (exercise/sports and daily activity), and the stages of change in the exercise behavior scale were used as measures of physical activity. The following variables were measured as potential correlates: self-efficacy and decisional balance for exercise. A significant negative correlation was observed between the time spent on the use of TV/PC and the exercise/sports score. An ANOVA showed that the participants in the ‘precontemplation’ group reported a significantly longer time spent on the use of TV/PC when compared with those in the ‘action’ and ‘maintenance’ groups. A significant relationship was observed between the time spent on the use of TV/PC, the ‘pros for exercise’, and self-efficacy for exercise. On the other hand, no significant relationship was observed between time spent on sedentary behavior and any parameters related to physical activity. As a result of multiple regression analysis, the decisional balance for exercise significantly explained the time spent on the use of TV/PC. In conclusion, it was suggested that time spent on the use of TV/PC might be preferable as a measure of sedentary behavior in future research on sedentary behavior.
