1. Ahn HK, Cheon HU. The meaning of participating experience for the extreme sports. The Korean Journal of Physical Education, 2012; 51(4): 319-330
2. American Society of Addiction Medicine. Definition of Addiction American Society of Addiction Medicine; 2011
3. Bentler PM. EQS for windows user's guide Encino, CA: Multivariate Software, Inc.; 1990
4. Brehm BJ, Steffen JJ. Relation between obligatory exercise and eating disorders. Am J Health Behav, 1998; 22: 108-119
5. Browne MW, Cudeck R. Alternative ways of assessing model fit. In K. A. Bollen & J. S. Long (Eds.), Testing structural equation models NewBury Park, CA: Sage; 1993