【摘要】 目的 探讨基于社会认知理论的运动干预对减重代谢手术后青少年运动行为及相关结局的影响。方法 选取2023年6月至2024年6月南京医科大学第一附属医院减重代谢外科收治的减重代谢手术后4周进入随访管理阶段的青少年肥胖病人共70例，按照随机数字表法分为干预组和对照组，各35例。对照组接受常规术后运动管理，干预组在此基础上接受为期16周的基于社会认知理论的运动干预，围绕认知建构、行为执行与环境支持展开。比较干预前后两组的活动水平、身体成分、心理社会结局。结果 与对照组相比，干预组的高强度活动时间（P=0.027）、步数（P=0.010）、BMI(P=0.037)、多余体重减少百分比（P=0.024）、体肌肉率（P=0.043）、生活质量（P=0.016）以及锻炼行为意向（P=0.038）均显著改善，组间差异有统计学意义，但热量消耗、活动时间、体脂率、运动自我效能方面差异无统计学意义（P>0.05）。结论 基于社会认知理论的运动干预有助于提升减重代谢手术后青少年运动参与水平和心理社会功能，且具备良好的可行性、适应性，可为该人群术后健康行为管理提供理论支持和实践依据。更多还原

【Abstract】 Objective To explore the effects of a social cognitive theory(SCT)-based exercise intervention on physical activity and related outcomes in adolescents after bariatric surgery. Methods A total of 70 adolescent patients who had undergone bariatric metabolic surgery and entered the follow-up management stage for 4 weeks postoperatively at the Department of Bariatric and Metabolic Surgery, the First Affiliated Hospital of Nanjing Medical University, between June 2023 and June 2024, were enrolled. They were randomly assigned to an experimental group(n=35) and a control group(n=35) using a random number table method. The control group received routine postoperative exercise guidance, while the intervention group received an SCT-based 16-week structured program focused on cognitive construction, behavioral execution, and environmental support. Outcomes, including physical activity levels, body composition, and psychosocial measures, were compared before and after the intervention. Results Compared with the control group, the intervention group showed significant improvements after the intervention in duration of moderate-to-vigorous physical activity(P=0.027), step count(P=0.010), BMI(P=0.037), excess weight loss rate(P=0.024), and the improvement in skeletal muscle mass percentage(P=0.043), quality of life(P=0.016), and exercise behavior intention(P=0.038), with statistically significant differences between the groups. However, no significant differences were observed between the groups in calorie expenditure, total activity duration, body fat percentage, or exercise self-efficacy(P>0.05). Conclusion SCT-based exercise interventions are effective in enhancing physical activity participation and psychosocial function in adolescents after bariatric surgery. This approach is feasible and adaptable, offering theoretical and practical support for postoperative behavioral management in this population.更多还原