高中生身体活动水平与社会性体格焦虑的关系研究：身体自尊的中介作用
The Relationship Research between Physical Activity Level and Social Physical Anxiety in High School Students: The Mediating Role of Body Self-Esteem

目的：探讨扬州市高中生的身体活动水平对其社会性体格焦虑的影响，并分析身体自尊的中介作用。方法：采用体育活动等级量表(PARS-3)、社会性体格焦虑量表(SPAC)和身体自尊量表(PSPP)，对扬州市某高中一年级400名学生进行调查。使用Process插件对中介模型检验，并用bootstrap法进行中介效应分析。结果：高中生的身体活动水平与身体自尊呈显著正相关(r = 0.46, p < 0.01)，身体活动水平与社会性体格焦虑呈显著负相关(r = ？0.28, p < 0.01)，社会性体格焦虑与身体自尊呈显著负相关(r = 0.28, p < 0.01)；身体自尊显著负向预测社会性体格焦虑(β = ？0.25, p < 0.001, 95% CI = [？0.36, ？0.13])，身体活动水平显著正向预测身体自尊(β = 0.53, p < 0.001, 95% CI = [0.45, 0.62])，且身体活动水平显著负向预测社会性体格焦虑(β = ？0.12, p < 0.001, 95% CI = [？0.23, ？0.006])；身体自尊在身体活动水平与社会性体格焦虑之间起到部分中介作用，中介效应比例为52.00%。结论：1) 身体活动水平、社会性体格焦虑与身体自尊之间存在显著相关性；2) 身体活动水平可以负向预测社会性体格焦虑；3) 身体自尊在高中生的身体活动水平与社会性体格焦虑之间起部分中介作用。
Objective: To explore the influence of physical activity level on social physical anxiety of high school students in Yangzhou city, and to analyze the mediating role of body self-esteem. Methods: 400 students of a senior high school in Yangzhou were investigated by Physical Activity rating Scale (PARS-3), Social physical Anxiety Scale (SPAC) and Physical self-esteem Scale (PSPP). Process plug-in was used to test the mediation model, and bootstrap method was used to analyze the medi-ation effect. Results: The physical activity level of senior high school students was significantly posi-tively correlated with body self-esteem (r = 0.46, p < 0.01), the physical activity level was signifi-cantly negatively correlated with social physical anxiety (r = ？0.28, p < 0.01), and the social physical anxiety was significantly negatively correlated with body self-esteem (r = 0.28, p < 0.01). Physical self-esteem significantly negatively predicted social physical anxiety (β = ？0.25, p < 0.001, 95% CI = [？0.36, ？0.13]), and physical activity level significantly positively predicted physical self-esteem (β = 0.53, p < 0.001, 95% CI = [0.45, 0.62]). Physical activity level negatively predicted social physical anxiety (β = ？0.12, p < 0.001, 95% CI = [？0.23, ？0.006]). Body self-esteem played a partial mediat-ing role between physical activity level and social physical anxiety, and the mediating effect ratio was 52.00%. Conclusion: 1) Physical activity level, social physical anxiety and physical self-esteem were significantly correlated; 2) Physical activity level can negatively predict social physical anxie-ty; 3) Body self-esteem plays a partial mediating role between the physical activity level of high school students and social physical anxiety.