| Abstract: | Two studies demonstrated that subjective expected utility (SEU) theory predicted interest in, but not adherence to, a weightlifting exercise program. The studies also showed that attitudes were related to adherence for certain individuals. Specifically, attitudes toward not weightlifting were related to the number of days experienced subjects weightlifted. In addition, in Study 1, experienced subjects had more positive attitudes toward weightlifting and more negative attitudes toward not weightlifting than did inexperienced subjects, and the two groups differed on a number of underlying beliefs. Similarly, in Study 2, experienced subjects had more positive attitudes toward weightlifting and differed from inexperienced subjects on a number of underlying beliefs. These results are discussed in terms of their implications for several issues: the usefulness of SEU theory in the exercise domain; the importance of considering attitudes toward alternative courses of action (including inaction) when attempting to predict exercis–or any other–behavior; the need to distinguish between exercise adoption (initiation) and maintenance (adherence); and the importance of Beach's (1982, 1985) distinction between deasion making and decision implementation. |
