Chen Han, Dai Jun
Dept of Kinesiology and Physical Education, Valdosta State University, Valdosta, GA.
J Phys Act Health. 2016 Aug;13(8):874-81. doi: 10.1123/jpah.2015-0547. Epub 2016 May 4.
Using the social cognitive theory, this study aims to examine how gender moderates the direct and indirect relationships of various sources of social support on Chinese adolescents' physical activity (PA).
A cross-sectional study was conducted. The final data includes 396 students (55.8% are boys) who were randomly selected from 2 middle schools and 4 high schools in Fuzhou city located in southeast China. Family support, peer support, and self-efficacy (SE) were measured using validated questionnaires. Participants' PA was assessed using the International Physical Activity Questionnaire short form. Structural equation modeling was used to analyze the data. A bootstrapping method was used to determine and compare the direct and indirect effects of social support on PA across genders.
Peer support had no direct effect on PA; rather, peer support indirectly influenced PA through SE. Gender did not moderate this mediating effect. In addition, family support had neither a direct nor an indirect effect on PA via SE, and gender did not moderate these effects.
Findings suggest that peer support played a more important role than family support on study participants' PA indirectly through SE. SE also has a similar indirect effect across genders.
本研究运用社会认知理论，旨在探讨性别如何调节各种社会支持来源对中国青少年身体活动（PA）的直接和间接关系。
进行了一项横断面研究。最终数据包括从中国东南部福州市的2所中学和4所高中随机选取的396名学生（55.8%为男生）。使用经过验证的问卷测量家庭支持、同伴支持和自我效能感（SE）。参与者的PA通过国际身体活动问卷简表进行评估。采用结构方程模型分析数据。使用自抽样法确定并比较社会支持对不同性别的PA的直接和间接影响。
同伴支持对PA没有直接影响；相反，同伴支持通过SE间接影响PA。性别并未调节这种中介效应。此外，家庭支持通过SE对PA既没有直接影响也没有间接影响，性别也未调节这些效应。
研究结果表明，同伴支持通过SE对研究参与者的PA间接发挥的作用比家庭支持更为重要。SE在不同性别中也有类似的间接影响。
