Objective: To investigate the relationship between substance use and extrac
urricular school activities in a representative sample of adolescents in th
e southeastern United States. Methods: Using a multiple logistic regression
procedure in SPSS Base 8.0 for Windows, we analyzed the relationship of or
ganized group activity with each illegal substance. Results: Adolescents wh
o participated in organized group activities were less likely to smoke ciga
rettes, drink alcohol, and smoke marijuana when compared to their nonpartic
ipant peers (p=.0001). Conclusion: Previous studies have supported physical
activity as a factor that may help prevent substance use, However, our res
ults suggest that participation in organized groups is protective against s
ubstance use.