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A school-based intervention based on self-determination theory to promote girls' physical activity: study protocol of the CReActivity cluster randomised controlled trial

机译：基于自决理论的学校干预措施，以促进女孩的体育活动：CReActivity集群随机对照试验的研究方案

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BackgroundPhysical inactivity is deemed to be the fourth leading cause for premature death. Nevertheless, only a minority of children and adolescents in Germany fulfil the guideline of the World Health Organization of at least 60 min of moderate-to-vigorous physical activity per day. Children and adolescents with a lower socioeconomic background and especially girls are regarded as a high-risk group in terms of physical inactivity. Aim of this study is to examine how a theory-based physical education intervention programme supporting students’ autonomy, competence and relatedness affects physical activity both during these lessons and in leisure time. Based on the self-determination theory and the social cognitive theory, the extent to which autonomy, competence, relatedness, social support and self-efficacy in girls mediate the effect of the intervention programme on their physical activity will be examined. Moreover, the potential moderating role of socioeconomic status, environmental factors, teacher characteristics and BMI will be tested.
机译：背景不活动被认为是导致过早死亡的第四大原因。尽管如此，在德国只有少数儿童和青少年符合世界卫生组织的指导，每天至少要进行60到60分钟的中度到剧烈运动。社会活动程度较低的儿童和青少年，特别是女孩，由于缺乏运动而被视为高危人群。这项研究的目的是研究基于理论的体育干预计划如何支持学生的自主性，能力和亲和力，从而在这些课程中和课余时间如何影响体育锻炼。基于自决理论和社会认知理论，将研究女孩的自主权，能力，亲和力，社会支持和自我效能在多大程度上介导干预计划对其身体活动的影响。此外，还将测试社会经济地位，环境因素，教师特征和BMI的潜在调节作用。

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