Ardestani Monasadat, Niknami Shamsaddin, Hidarnia Alireza, Hajizadeh Ebrahim
Department of Health Education and Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
J Res Health Sci. 2015 Fall;15(4):223-7.
The importance of increasing adolescence girl's level of physical activity is recognized as a priority for having a healthy lifestyle. However, adolescent girls especially Iranian, are at high risk for physical inactivity. Social Cognitive Theory (SCT) is a successful theory to explain physical activity behavior. The aim of this study was to determine the predictors of physical activity based on the SCT.
This cross-sectional study was conducted among 400 adolescent girls (15-16 yr old) in Tehran, Iran (2013). The participants were randomly chosen with multistage sampling. The SCT constructs consisted of self-efficacy, self-regulation, social support, outcome expectancy, and self-efficacy to overcoming impediments. Statistical analysis was carried out applying SPSS: 16, LISREL 8.8. Stepwise regression was used to test predictors of behavior. Pearson correlation was assessed.
Self efficacy to overcoming impediments was the main construct to predict physical activity (Beta=0.37). Other determinants were self-efficacy (Beta=0.29), family support (beta=0.14), outcome expectancy (beta=0.13), friend support (beta=0.12), and self-regulation (beta=0.11), respectively. In general, the SCT questionnaire determined 0.85 variation of physical activity behavior. All of the constructs had direct significant relation to physical activity behavior (P<0.001).
The constructs of SCT provide a suitable framework to perform promoting physical activity programs and self-efficacy to overcoming impediments and self-efficacy are the best predictors of physical activity in adolescent girls.
提高青春期女孩的身体活动水平对于拥有健康的生活方式而言，被视为一项优先事项。然而，青春期女孩，尤其是伊朗的青春期女孩，身体活动不足的风险很高。社会认知理论（SCT）是一种成功解释身体活动行为的理论。本研究的目的是基于社会认知理论确定身体活动的预测因素。
本横断面研究于2013年在伊朗德黑兰的400名青春期女孩（15 - 16岁）中进行。参与者通过多阶段抽样随机选取。社会认知理论的构成要素包括自我效能感、自我调节、社会支持、结果期望以及克服障碍的自我效能感。使用SPSS 16和LISREL 8.8进行统计分析。采用逐步回归来检验行为的预测因素。评估了皮尔逊相关性。
克服障碍的自我效能感是预测身体活动的主要构成要素（β = 0.37）。其他决定因素分别是自我效能感（β = 0.29）、家庭支持（β = 0.14）、结果期望（β = 0.13）、朋友支持（β = 0.12）和自我调节（β = 0.11）。总体而言，社会认知理论问卷确定了身体活动行为0.85的变异。所有构成要素与身体活动行为均有直接显著关系（P < 0.001）。
社会认知理论的构成要素为开展促进身体活动的项目提供了一个合适的框架，克服障碍的自我效能感和自我效能感是青春期女孩身体活动的最佳预测因素。
