本研究目的是以跨理論模式，瞭解大學生的運動階段分佈與社會心理因素，在運動介入後所產生的差異情形；背景因素、社會心理因素對運動階段之預測情形。以50 位大學生為受試對像，進行問卷填寫後經過12週運動介入，38位受試者再進行後測，研究結果顯示運動享樂感方面，運動階段在維持期者顯著高於無意圖期、意圖期、準備期；運動階段在行動期者顯著高於無意圖期；運動自我效能方面，維持期者顯著高於無意圖期、意圖期。運動介入後，受試者的運動階段產生顯著改變，穩定活動組的自覺運動利益、運動享樂感與運動自我效能皆顯著高於進步者組及坐式生活組。運動介入前背景因素中的參加運動社團(51.8%)及健康狀況因素(8.6%)可預測運，社會心理因素中的運動享樂感(59%)可預測運動階段；運動介入後背景因素中的參加運動社團(34.5%)及健康狀況因素(8.3%)可預測運動階段，社會心理因素中的運動自我效能(47.5%)及運動享樂感(7.1%)可以預測運動階段，總預測力為54.6%。並且運動自我效能可以預測運動階段移動組別(29.2%)。

The purpose of this study were to investigate the stages of exercise and their influential factors among college students through exercise intervention. The subjects were 50 college students completed questionnaires. after 12 weeks exercise intervention, 38 subjects were re-measured. Results showed that Before exercise intervention, for exercise enjoyment: maintenance stage was significantly higher than pre-contemplation, contemplation and preparation stage; action stage were significantly higher than pre-contemplation stage; for exercise self-efficacy: maintenance stage were significantly higher than pre-contemplation and contemplation stage. After exercise intervention, stable active group perceived exercise benefits, exercise enjoyment, were significantly higher than adopter & stable sedentary groups. Before exercise intervention: Background factors of participation in exercise club(51.8%), health status (8.6%) can predict the exercise stage， Psychosocial factors of exercise enjoyment(59%) can predict exercise stage. After exercise intervention: Background factors of participation in exercise club(34.5%), health status (8.3%) can predict the exercise stage，Psychosocial factors can predict exercise stage (54.6%), include exercise self-efficacy (47.5%) and exercise enjoyment(7.1%). And exercise self-efficacy can predict stage of change also (29.2%).