Trost Stewart G, Saunders Ruth, Ward Dianne S
School of Human Movement Studies, University of Queensland, Brisbane, Australia.
Am J Health Behav. 2002 Mar-Apr;26(2):95-102. doi: 10.5993/ajhb.26.2.2.
To evaluate the theory of reasoned action (TRA) and planned behavior (TPB) in predicting moderate-to-vigorous physical activity (MVPA) in sixth-grade youth.
One hundred ninety-eight students completed a questionnaire measuring attitudes, subjective norms, perceived behavioral control, and intentions to be active. MVPA was measured using the CSA 7,164 accelerometer.
Although demonstrating an acceptable fit, the TRA and TPB accounted for only a small percentage of the variance in MVPA. In support of the TPB, the addition of control perceptions to the reasoned action model added to the prediction of intentions and MVPA.
Within our sample of sixth graders, the utility of the TRA or TPB as a framework for activity interventions appears to be limited.
评估理性行动理论（TRA）和计划行为理论（TPB）在预测六年级青少年中等到剧烈身体活动（MVPA）方面的作用。
198名学生完成了一份问卷，该问卷测量了态度、主观规范、感知行为控制以及积极活动的意图。使用CSA 7164加速度计测量MVPA。
尽管显示出可接受的拟合度，但TRA和TPB仅占MVPA方差的一小部分。为支持TPB，在理性行动模型中加入控制感知可增加对意图和MVPA的预测。
在我们的六年级学生样本中，TRA或TPB作为活动干预框架的效用似乎有限。
