The Transtheoreticai Model of behavior change was applied to a sample of 669 preadolescents (M age = 8.2) to determine whether stages of exercise could be observed. Associations between stage of exercise classification and demographic, fitness, and cognitive variables were examined. Stage of exercise classifications, on the basis of the Children’s Stage of Exercise Algorithm, were as follows: maintenance (50.8%), action (36.5%), preparation (3.1%), contemplation (4.9%), and precontemplation (4.6%). Stage of exercise was significantly related to gender, age, and grade level. Controlling for these differences, the relationship between exercise beliefs and stage of exercise was significant.
B.J. Cardinal is with the Department of Exercise and Sport Science at Oregon State University. H-J. Engels and W. Zhu are with the Division of Health, Physical Education, and Recreation at Wayne State University. Address correspondences to: Bradley J. Cardinal, Department of EXSS, 220 Langton Hall, Oregon State University, Corvallis, OR 97331-3303.