Health and Society Group, Wageningen University, Wageningen, The Netherlands.
Psychol Health Med. 2013;18(4):490-9. doi: 10.1080/13548506.2012.750727. Epub 2013 Jan 17.
Possible interactions among exercise self-identity, social comparison and exercise behaviour were explored in a sample of 417 undergraduate students (mean age = 21.5, SD = 3.0; 73% female). Two models were examined using self-report data; (1) a mediation model which proposed an association between social comparison and exercise behaviour mediated by exercise self-identity and (2) a moderation model proposing an association between exercise behaviour and self-identity moderated by social comparison. Results of the mediation analyses revealed partial mediation of the social comparison--exercise behaviour relationship by self-identity in females. Results of the moderation analyses revealed in males a significant interaction of social comparison with exercise behaviour in the prediction of self-identity - the positive association between exercise behaviour and exercise self-identity showed only significant among male students who believed to exercise equally much or less than peers. Possible explanations and implications for exercise promotion are discussed.
本研究在 417 名本科生（平均年龄 21.5，标准差 3.0；73%为女性）样本中探讨了运动自我认同、社会比较与运动行为之间的可能相互作用。采用自我报告数据检验了两个模型；（1）一个中介模型，提出社会比较与运动行为之间的关联，由运动自我认同中介；（2）一个调节模型，提出运动行为与自我认同之间的关联，由社会比较调节。中介分析的结果显示，在女性中，社会比较与运动行为之间的关系部分通过自我认同来中介。调节分析的结果表明，在男性中，社会比较与运动行为在预测自我认同方面存在显著的交互作用，即运动行为与运动自我认同之间的正相关仅在那些认为自己与同伴运动水平相当或较低的男性学生中显著。讨论了可能的解释和对运动促进的意义。
