178 Christophe Maïano is with the Sport, Leisure, and Health Department at the University of Aix-Mar- seille II in Marseille Cedex 9, France. E-mail: christophe.maiano@univmed.fr. Grégory Ninot and Jean Bilard are with the University of Montpellier, Engineering of Symbolic Processes for Sport and Health , Montpellier, France. Alexandre J.S. Morin is with the University of Sherbrooke, Department of Psychology in Sherbrooke, Quebec, Canada. ADAPTED PHYSICAL ACTIVITY QUARTERLY, 2007, 24, 178-196 © 2007 Human Kinetics, Inc. Effects of Sport Participation on the Basketball Skills and Physical Self of Adolescents With Conduct Disorders Christophe Maïano Grégory Ninot University of Aix-Marseille II University of Montpellier I Alexandre J.S. Morin Jean Bilard University of Sherbrooke University of Montpellier I The purpose of this study was to examine the long-term effects of sport participa- tion on the basketball skills and physical self-concept of adolescents with conduct disorders (CD). Participants were 24 adolescent males with CD, divided equally into three groups: (a) interestablishment basketball (IEBB), (b) integrated scho- lastic basketball (ISBB), and (c) control—adapted physical activity (APA). The basketball skills tests and physical self-concept were both administrated 4 times over an 18-month period. Results indicated (a) an improvement in basketball skills in both competitive groups (i.e., ISBB, IEBB), (b) a significant curvilinear trend of physical self-worth scale in the three groups, and (c) no significant changes in physical self-concept in the three groups (i.e., ISBB, IEBB, and APA). In conclu- sion, the integrated and segregated competitive programs did not represent an effec- tive means for improving the physical self-concept of adolescents with CD. Conduct disorders (CD) are defined in the Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American Psychiatric Association, 1994) as follows. A repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate societal norms or rules are violated, as manifested by the presence of three (or more) of the following criteria in the past twelve months, with at least one criterion present in the past six months: (a) aggres- sion toward people or animals, (b) destruction of property, (c) deceitfulness or theft, and (d) serious rule violations. (pp. 90-91)