A typology of stages of adherence to exercise behavior: A cluster analysis

The aim of the study was to report the results of a cluster analysis of current exercise behavior and of intention to exercise in the next year. A sample of 22,286 individuals was recruited over 4 successive 3-month periods. Each individual was asked to complete a self-administered questionnaire assessing exercise behavior in the last 3 months and intention, attitudes, perceived social norms, and perceived behavioral control with respect to exercising in the coming year. The Beale's pseudo F statistic clearly suggests that there are 4 stages of adherence to exercise: unconcerned, ambivalent, optimistic, and active. Finally, MANOVAs and univariate tests indicated that the 4 clusters differed in attitude, subjective norm, and perceived behavioral control (p < .0001). These results support the appropriateness of combining intention and behavior to identify stages of adherence to exercise.