The purposes of this study was to examine the effect of participation motives on exercise commitment and enjoyment in social baseball club members. A total of 408 members of amateur baseball leagues in the DaeguㆍKyeongbuk area participated in this survey. The collected data was analyzed by SPSS 20.0 for Window for verification of reliability and validity, descriptive statistics, multivariate analysis, correlation analysis, and multiple regression analysis. The result of this study revealed that the enjoyment, the health, and the physical fitness had great influences on participation motive in older age groups (p<.05). There was no significant difference in the exercise commitment and the enjoyment. In the type of league, the upper leagues showed the higher levels of participation motive, the exercise commitment, and the enjoyment (p<.001). No significant difference was found on the family support of the exercise enjoyment. It was shown that the longer the participation duration, the higher participation motive, the exercise commitment, and the enjoyment (p<.001). There was no signifiant difference in the external ostentation of participation motive and the family support of exercise enjoyment. With an increase in frequency, higher levels of participation, the exercise commitment, and the enjoyment were observed (p<.001). There was no significant difference on the technology development, the health, the physical fitness, the social activity, the external ostentation, and the family support of exercise enjoyment. The correlation analysis of each factor showed higher levels of positive correlations in all the sub factors. In the multiple regression analysis, participation motive had a high influence on the exercise flow, and the factors of exercise enjoyment except that family support had relatively high influences. The exercise flow showed a high influence on the efficiency, the self-satisfaction, and the effects of exercise showing that the cognitive flow of exercise flow had high power of explanation. To further promote and maintain continuity of social baseball, it is needed to provide environments suited for the psychological states of participants. It is required to conduct further studies with various types of sports participants.

Main words: social baseball club, participation motives, exercise commitment, enjoyment