The mediating influence of unconditional self-acceptance and labile self-esteem on the relationship between multidimensional perfectionism and exercise dependence

Objectives: Previous research has indicated that perfectionism may be an important antecedent of exercise dependence (Hagan, A. L., & Hausenblas, H. A. (2003). The relationship between exercise dependence and perfectionism. American Journal of Health Studies, 18, 133-137; Hausenblas, H. A., & Symons Downs, D. (2002a). Exercise dependence: a systematic review. Psychology of Sport and Exercise, 3, 89-123, Hausenblas, H.A., & Symons Downs, D. (2002b). How much is too much? The development and validation of the exsrcise dependence scale. Psychology and Health, 17, 387-404). To date, however, few studies have sought to examine the psychological processes that underpin this relationship. The purpose of the present investigation was to determine the degree to which self-oriented and socially prescribed perfectionism were associated with exercise dependence, and to ascertain whether the relationships were mediated by unconditional self-acceptance and labile self-esteem. Method: Three hundred and seven middle-distance runners completed a multi-section inventory that included Hewitt, P. L., & Flett, G. L. [(1991). Perfectionism in the self and social contexts: conceptualization, assessment, and association with psychopathology. Journal of Personality and Social Psychology, 60, 456-470] Multidimensional Perfectionism Scale, Chamberlain, J. M., & Haaga, D. A. F. [(2001). Unconditional self-acceptance and psychological health. Journal of Rational Emotive and Cognitive Behavior Therapy, 19, 163-176] Unconditional Self-acceptance Scale, Dykman, B. M. [(1998). Integrating cognitive and motivational factors in depression: initial tests of a goal orientation approach. Journal of Personality and Social Psychology, 74, 139-158] Labile Self-Esteem Scale, and Ogden, J., Veale, D., & Summers, Z. [(1997). The development and validation of the Exercise Dependence Questionnaire. Addiction Research, 5, 343-356] Exercise Dependence Questionnaire. Results: Structural Equation Modeling provided support for three hypotheses. First, that self-oriented perfectionism had a direct positive effect on exercise dependence. Second, that unconditional self-acceptance fully mediated the relationship between socially prescribed perfectionism and exercise dependence. Third, that labile self-esteem mediated the relationship between unconditional self-acceptance and exercise dependence. Multi-group invariance analysis further indicated that there were subtle variations in the nature of these relationships for male and female samples. Conclusions: The findings from the present study indicate that both self-oriented and socially prescribed perfectionism may be critical antecedents of exercise dependence, but that the psychological mechanisms underpinning their association with exercise dependence may differ.