意識下的信念或意圖是過去三、四十年最常用來解釋、預測或改變身體活動行為的構念。本文回 顧過去研究發現，意圖或意圖的改變無法有效解釋身體活動行為，從無意識的身體活動内隱態度及習 慣，可增加對身體活動的解釋變異量，及提升身體活動量。最後，在實際促進身體活動的介入及研究 提出相關建議。

Construct of belief or intention in conscious was widely used in explaining, predicting, and changing physical activity behavior in the past three or four decades. This review paper found that intention (changes) could not explain physical activity behavior effectively. Nonconscious physical activity implicit attitude and habit could add explained variance in physical activity and increased physical activity levels. In final, practical applications in promoting physical activity and future researches were also suggested.