本研究從「投入」之角度，探討遊憩者涉入與心流體驗關係間之中介機制。以便利抽樣法調查中高海拔之登山遊憩者，共收集404份有效問卷，並運用結構方程模式建構研究變數間之因果關係。研究結果發現：登山者的遊憩涉入愈高，愈能提升其對活動的投入與心流體驗的獲得。而當登山者對活動投入程度愈深時，愈能獲得心流體驗，且投入在遊憩涉入與心流體驗間扮演著完全中介角色。亦即遊憩涉入需透過投入之連結來獲得高度的心流體驗。最後依據研究結果提出若干管理意涵與未來研究建議。

The aim of this research was to study the construct of “engagement,” to identify its role in recreation behavior, to empirically validate its influence on the relationship between recreation involvement and flow experience, and to explore the plausibility of promising mediating mechanisms for this construct. We collected 404 questionnaires from hikers in a middlehigh altitude mountainous area, and employed structural equation modeling (SEM) to construct the correlations between variables. The results showed that for people participating in hiking activities, those with a significantly greater degree of involvement showed greater engagement. Hikers who showed a higher engagement generally had a greater flow experience. Furthermore, in the relationship between recreation involvement and flow experience, the role of engagement is crucial. In other words, recreation involvement affects flow experience via mediation by engagement. Finally, this study provides suggestions for management and for future research.