Objective:

To evaluate the feasibility and acceptability of a theory-grounded, text message–based intervention targeting sedentary behaviour among university students.

Design:

Single-group repeated measures design.

Setting:

Post-secondary institution in British Columbia, Canada.

Methods:

Data concerning students’ sedentary behaviour were collected via online survey completed at three time points over the course of one university semester: baseline (T1), post-intervention (T2) and 2-week follow-up (T3). The 6-week intervention comprised four weekly text messages delivered to participants’ mobile devices. Participants’ attitudes regarding the intervention were evaluated together with other measures including constructs in the Health Action Process Approach (HAPA). Sedentary behaviour and physical activity were measured using the Physical Activity and Sedentary Behaviour Questionnaire (PASB-Q).

Results:

The intervention was generally well received by participants. Preliminary, observational data suggest some indices of user experience were statistically associated with behavioural outcomes and may inform future work. Hours per week of sedentary behaviour did not change across time points, whereas minutes per week of physical activity decreased significantly from baseline to follow-up.

Conclusion:

While study findings suggest minor modifications to the intervention may improve participants’ engagement, we demonstrated overall that a theory-grounded, text message–based intervention to reduce sedentary behaviour can be feasibly implemented. The efficacy of this intervention should be tested through a randomised control trial with a representative sample of the student population.

中文翻译：

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基于理论的短信干预，以减少大学生的久坐行为

客观的：

评估针对大学生久坐行为的基于理论的，基于短信的干预措施的可行性和可接受性。

设计：

单组重复测量设计。

环境：

加拿大不列颠哥伦比亚省的高等教育机构。

方法：

在一个大学学期的三个时间点通过在线调查收集有关学生久坐行为的数据：基线（T1），干预后（T2）和2周随访（T3）。为期6周的干预包括每周向参与者的移动设备发送4条短信。与其他措施一起评估了参与者对干预的态度，包括“健康行动过程方法”（HAPA）中的结构。使用“身体活动和久坐行为问卷”（PASB-Q）测量久坐行为和身体活动。

结果：

与会者普遍接受了该干预措施。初步的观察数据表明，一些用户体验指标与行为结果在统计上相关，并且可能会为以后的工作提供信息。从基线到随访，久坐行为的每周小时数在各个时间点都没有变化，而每周进行的体育活动分钟数则显着减少。

结论：

虽然研究结果表明，对干预措施进行较小的改动可能会改善参与者的参与度，但我们总体上证明，可以切实地实施以理论为基础的，基于短信的减少久坐行为的干预措施。这种干预的效果应通过一项具有代表性的学生群体的随机对照试验进行测试。