本研究應用計畫行為理論瞭解自行車參與者的態度、主觀規範與知覺行為控制對行為意圖的影響情形。方法採用便利取樣選取450位中部地區自行車運動參與者，以「自行車參與者行為意圖」問卷進行調查，共獲得有效樣本411份。所得資料經描述性統計、多元迴歸分析及α=.05的顯著水準進行分析。結果發現男性參與者在行為意圖上高於女性參與者，教育程度愈高的參與者在參與行為意圖上愈高。且自行車參與者的行為意圖以知覺行為控制（β=.35）影響最大，其次為態度（β=.18），然而「主觀規範」的影響並不明顯，其整體解釋變異量為22.3%。研究結論為知覺行為控制是從事自行車參與行為意圖的重要預測指標。

Purpose: The aim of this study applies the theory of planned behavior to investigate biker's attitude, subjective norm, and perceived behavioral control and to explore its impacts on the situation of behavior intentions. Method: The survey of biker's behavioral intention used a convenience sampling of 450 bikers, the total of 411 valid questionnaires were obtained. The collected data were analyzed by descriptive statistics and multiple regressions with a significance level of α = .05. Results: First, male bikers in cycling behavioral intention were significantly higher than female bikers. Participants of higher level of education participants involved in the stronger behavioral intentions. Second, the perceived behavior control (β =. 35) and attitude (β =. 18) mainly influenced the behavioral intentions and the subjective norm had no significant effects on the behavioral intentions. Thus, the explanation of the variance accounted for 22.3%. Conclusions: Biker's attitude and perceived behavioral control can be utilized to predict biker's behavior intention. It can promote biker's participation.