目的：本研究旨在探討啦啦隊運動員的體重壓力、社會體型焦慮、自覺能力、自我決定動機與退出意圖之關係，以及啦啦隊運動員體重壓力預測社會體型焦慮。方法：研究對象為428名大專校院的啦啦隊運動員，研究工具為基本資料問卷、體重壓力量表、社會體型焦慮量表、自覺能力量表、運動動機量表、退出意圖量表。結果：研究結果發現體重壓力可以預測社會體型焦慮，其中以同儕預測力最高。體重壓力引發社會體型焦慮而降低自覺能力；自覺能力一方面會正向影響自我決定動機、進而負向影響退出意圖，另一方面會負向影響退出意圖。結論：本研究之假設模式得到支持，自覺能力、自我決定動機扮演中介變項的角色。同儕壓力是啦啦隊運動員社會體型焦慮主要壓力來源。最後本研究針對啦啦隊運動員可能面臨的各項心理問題提供應用上的建議。

Purpose: The purpose of this study was to explore the relationships among collegiate cheerleader's weight pressure, social physique anxiety, perceived competence, self-determined motivation and dropout intention and to predict social physique anxiety by weight pressure. Methods: Participants were 428 collegiate cheerleaders. The measurements comprised demographic questionnaire, weight pressure scale, social physique anxiety scale, perceived competence scale, sport motivation scale, and dropout intention scale. Results: Weight pressure could predict social physique anxiety, especially from peers. Weight pressure fostered social physique anxiety and social physique anxiety would reduce perceived competence. Perceived competence would not just affect self-determined motivation and then destroy dropout intention but reduce dropout intention directly. Conclusion: The findings supported the proposed model. Perceived competence and self-determined motivation would be mediate variables on the relationship which weight pressure, social physique anxiety influence dropout intention. Weight pressure from peers is the significant predictor for social physique anxiety. At last, this study provides advices for collegiate cheerleaders who might face psychological problems.