The purpose of this study was to examine factors related in past sports experiences before adulthood for developing exercise habits during adulthood. The participants were eighty adults aged 44-79(24 men:67.6±6.2 yr, 51 women:59.2±8.2 yr, and 5 unknown:69.7±4.5 yr). All participants belonged to a community club with sports and culture classes. Survey items included past sports experiences, current exercise habits, and enjoyment of exercise. Influences of past sports experiences to current exercise habits were examined using a multiple indicator model in structural equation modeling. Results for a causal structure model of past sports experiences and current exercise habits indicated a good fit to the data(CFI=0.998, RMSEA=0.030). The path coefficient was 0.34(standardized solution:past sports experiences→current exercise habits). However the path coefficient of past sports experiences→current exercise habits in the model which added enjoyment of exercise indicated a low value(-0.08, ns). Meanwhile, the path coefficient of past sports experiences→enjoyment of exercise and enjoyment of exercise→current exercise habits were 0.56 and 0.62, respectively. In addition, there was a no significant difference in physical activity level between numbers of sports experiences. These findings suggest that past sports experiences before adulthood had directly a stronger effect on enjoyment of exercise than on exercise habit, and that enjoyment of exercise had directly a strong effect on exercise habit.