Baqiyatallah University of Medical Sciences, Tehran, Iran.
J Pediatr (Rio J). 2012 Sep-Oct;88(5):430-8. doi: 10.2223/JPED.2223.
To conduct an evaluation of an educational program based on the health promotion model (HPM) and stages of change to improve physical activity (PA) behavior among Iranian adolescents.
This was a group randomized controlled trial with 165 participants in two groups (intervention/control). Data were collected using self-reported questionnaires based upon HPM constructs (benefits and barriers of action, self-efficacy, activity-related affect, interpersonal influences, and situational influences). The stages of change scale was used to select eligible participants (were placed on precontemplation, contemplation, or preparation stages) and to assess the trend. After collecting baseline data, the intervention was administered to the participants and follow-up data was collected 3 months after intervention.
In all, 88 males and 77 females with a mean age of 13.99±0.4 participated in the study. The differences in all HPM constructs, except activity-related affect and social influences, were significant (p < 0.01) between baseline and follow-up measurements. Adolescents in the intervention as compared to the control group were placed in action (70%) or preparation (30%) stages at follow-up. Multiple regression analysis revealed that competing preferences, social norms, role models, (p < 0.001), and commitment to action plan can significantly predict PA behavior. The model accounted for 22.5% of the variance in PA.
The results suggest that educational interventions based on stages of change can have important implications for improving PA among adolescents in more constructs of HPM.
基于健康促进模式（HPM）和改变阶段评估一个教育项目，以改善伊朗青少年的身体活动（PA）行为。
这是一项基于 HPM 结构（行动的益处和障碍、自我效能、与活动相关的情感、人际影响和情境影响）的自我报告问卷的群组随机对照试验，共有 165 名参与者分为两组（干预/对照组）。使用阶段变化量表选择合格的参与者（处于前沉思、沉思或准备阶段）并评估趋势。收集基线数据后，向参与者提供干预措施，并在干预后 3 个月收集随访数据。
共有 88 名男性和 77 名女性，平均年龄为 13.99±0.4 岁，参与了这项研究。除了与活动相关的情感和社会影响外，所有 HPM 结构的差异在基线和随访测量之间均具有统计学意义（p < 0.01）。与对照组相比，干预组的青少年在随访时处于行动（70%）或准备（30%）阶段。多元回归分析显示，竞争偏好、社会规范、榜样（p < 0.001）和对行动计划的承诺可以显著预测 PA 行为。该模型解释了 PA 行为变化的 22.5%。
结果表明，基于改变阶段的教育干预措施可能对改善 HPM 更多结构中的青少年 PA 具有重要意义。
