目的：本研究旨在瞭解不同運動參與程度之國中生在運動自我效能、生活壓力、與壓力因應能力上之差異，並進一步探討運動參與程度、運動自我效能、與生活壓力對於壓力因應之預測力。方法：本研究採問卷調查法，用運動參與程度量表、運動自我效能量表、學童壓力因應量表及自編的壓力程度量表作為研究工具。以雲林縣的國中生為母群體，共回收有效樣本879份，使用SPSS for windows 12.0進行資料處理，採單因子變異數分析、皮爾森積差相關考驗、及多元逐步回歸等統計分析方法。結果：一、不同運動參與程度之國中學生在運動自我效能上達顯著(p<.05)差異，高運動參與組的運動自我效能得分(M=70.2)顯著高於中(M=60.3)及低運動參與組(M=52.9)；二、不同運動參與程度之國中學生在壓力因應總分及六個壓力因應層面上皆有整體的顯著差異(p<.05)；而且高運動參與程度者在壓力因應總分及六個分量表（師友家庭資源、積極心、自我滿足感、情緒障礙、同儕關係、自控能力）上，比中及低運動參與程度之國中生都顯著(p<.05)的高（高＞中＞低）；三、國中生的「運動參與程度」與「運動自我效能」呈現顯著的正相關(p<.05)(r=.268)；與「壓力因應能力」的相關係數為.151；而「生活壓力總分」與「壓力因應總分」有負向的關係(r=-.365)；四、「生活壓力總分」、「運動自我效能」、「在校學業表現」以及「運動參與程度」四個預測變項可以解釋「壓力因應能力」25.9%的變異量。結論：國中生對自我的運動能力愈有自信、在校的學業表現愈好、其運動參與程度愈高，生活壓力愈低者、其壓力因應能力愈好。

Background: Stress is common in adolescence and may occur more often at this time than at any other life stage. Although research showed a positive relationship between physical exercises and stress reduction, inactivity is prevalent among students. This study examined the current situations of exercise participation, exercise self-efficacy, stress perception, and stress coping in junior high-school students. Purposes: To examine the relationship of exercise participation, exercise self-efficacy, the stress of life and the stress coping of the junior high school students. Methods: SPSS for Windows 12.0 was used for the statistical analyzes; ANOVA, Pearson Product Moment Correlation Coefficient, and Stepwise Multiple Regression were used for data analyses; this study self-designed a questionnaire for Stress, also adopted Exercise Self-efficacy Scale (Hsu, 2000)、Students Stress Coping Inventory (Shum, 2004), and Exercise Participation Scale (Blair, 1984) for collecting data purposes. Using stratified clustering sampling method, 1050 were recruited from 3 classes at six middle schools in Yunlin County, after discarding incomplete questionnaires, 879 valid samples left for the analyzes. Results: 1. Junior high school students participated in higher levels of exercise was significantly (p<.05) higher than students with mid-level and low-level exercise participation in the scores of exercise self-efficacy, and stress coping total score and the six subscales of stress coping, including resources from family and friend, enthusiastic, self-satisfaction, emotion , peer relationship, self-control (hi>Mid>low); 2. Exercise self-efficacy (r=.268), stress coping (r=.151) were significantly correlated with exercise participation in Junior high school students; and the correlation of life stress with stress coping (r=-.365) was significantly (p<.05) different from zero indicating the higher the life stress, the lower the ability in coping with stress; 3. Life stress, exercise self-efficacy, academic performance and exercise participation were found to be significant (p<.05) predicators of 'stress coping', they accounted for a total percentage of explained variance of 25.9%. Conclusion: The Junior high students, who have the higher level of exercise participation, tend to have higher exercise efficacy, lower life stress perception, and better stress coping ability.