Using a sports commitment model that employs covariance structure analysis, this study focuses on practitioners of "Mama-san" volleyball and the factors in their continuance of the sport. We compare two models of the presence or absence of the "Drop out experience" .The results of the hypothetical models support previous studies and demonstrate the validity of the models. In the comparison of whether practitioners have a "Drop out experience" or not, the results confirmed the differences in the models. In order to have players continue "Mama-san" volleyball, emotional support such as "encouraging," "praising" and "expressing understanding" from those who have resumed their participation after dropping out can be important. In addition, the results suggest that similar support from others involved with "Mama-san" volleyball on a daily basis could help form their identity as a "Mama-san" volleyball player, and could lead to the implementation and continuation of the sport of "Mama-san" volleyball .
