目的：本研究以Astin所提出的輸入－環境－成果模式為基礎，探討慢速壘球代表隊隊員參與動機、球隊涉入經驗與就業力之關係，並透過中介效果競爭模式分析法進行球隊涉入經驗中介檢測，希冀透過中介分析了解球隊涉入經驗對球員參與動機及就業力間的影響。方法：本研究以參加「全國大專校院校友盃慢速壘球賽」畢業五年內之畢業生為研究對象，並採用問卷調查法進行蒐集，運用「參與動機量表」、「球隊涉入經驗量表」及「就業力量表」研究工具，有效樣本共計210位，所得資料以描述性統計、驗證性因素分析與結構方程模式進行統計分析，透過結構方程模式檢視其模式適配度與影響效果，針對三個潛在變項進行因果路徑模式分析並檢測球隊涉入經驗對參與動機與就業力之中介效果。本研究統計分析使用IBM SPSS AMOS 22.0統計套裝軟體進行資料分析，並以.05作為統計顯著水準。結果：本研究建構之分析模式與實際資料整體適配度良好 (χ2/df = 2.23, SRMR = .05, RMSEA =.08, GFI=.91, NFI = .91, CFI = .95, IFI=.95, PNFI = .69)，大學慢壘代表隊球員參與動機對球隊涉入經驗有直接影響效果、球隊涉入經驗對其就業力有直接影響效果，且所有變項對學習成果解釋力為41%。此外，球隊涉入經驗在其參與動機與就業力間具中介效果存在。結論：本研究建議教練、體育老師，或運動專業人員除重視球員之參與動機外，更應重視球員認知理解、情意認同、行動技能、臨場表現的涉入程度，以確保球員參與品質與習得重要的經驗與就業力之學習成果。

Purpose: Based on I-E-O model, the purpose of this study was to examine the relationships among participation motivation, team involvement experience, and employability on college slow-pitch softball team members. This study used the moderating effect of competitive model analysis to analyze the mediating effect of team involvement on participation motivation and employability. Methods: The subjects were the college graduates who participated in “National Intercollegiate Alumni Slow-pitch Softball Game”. This study used the questionnaire survey to collect data, and research instruments included the scales of “participation motivation”, “team involvement”, and “employability”. A total of 210 valid samples were collected. The obtained data were statistically analyzed using descriptive statistics, confirmatory factor analyses, and structural equation modeling (SEM). Structural equation modeling was used to examine the fitness of model, the causal model of three potential variables, and the mediating effect of team involvement in between sport motivation and employability. This study was used the IBM SPSS AMOS 22.0 for data analysis, along with the significance level of .05. Results: The overall fitness of model is good (χ2/df = 2.23, SRMR = .05, RMSEA = .08, GFI = .91, NFI = .91, CFI = .95, IFI = .95, PNFI = .69). College slow-pitch softball team members’s participation motivation directly predicted team involvement, and team involvement directly predicted employability, with an exploration power (R2) reaching 41%. In addition, there was a complete mediating effect of team involvement in between participation motivation and employability. Conclusion: Besides participation motivation, this study suggested that sport coaches, physical educators and sport professionals need to focus on the involvement degree of cognitive understanding, affective identification, action skills, presenting to ensure the learning outcome of player’s participation quality, important experience, and employability.