The benefits of organized camps for improving many psychological aspects have been well demonstrated in various studies. However, few reports in this area have focused on the level of physical activity. An organized camp experience is a potential approach for promoting physical activity. The purpose of the present study was to examine the influences of organized camp experience on physical activity level and television viewing time in elementary children. A group of twenty children participated in an organized summer camp program for one week, and another twenty-one children who did not participate in any camp were used as a control group. The organized camp program utilized structured adventure activities and nature activities. The primary aims of the organized camp were to promote physical activities during the camp and in a daily setting. Subjects were equipped with a Kenz Lifecorder for three time periods (Time 1 : pre-camp; Time 2 : during-camp; Time 3 : post-camp) to monitor physical activity. A physical activity index was calculated from the Lifecorder data of step counts, exercise energy expenditure, and total daily energy expenditure. Children also reported the time they spent viewing television in diaries at Time 1 and Time 3. When repeated-measures ANOVA was used, a significant interaction effect was found for the physical activity index; physical activity levels during Time 2 were higher than during Times 1 and 3 in the experimental group, and were lower than Times 1 and 3 in the control group. As for television viewing time, ANOVA revealed no significant interaction effect. The findings of the study are discussed in terms of their impact on research. Further investigation is required to identify an organized camp behavior strategy that promotes point of post time physical activity in elementary children. Suggestions for future investigation are also presented.