Daily Motivational Text Messages to Promote Physical Activity in University Students: Results From a Microrandomized Trial
Daily Motivational Text Messages to Promote Physical Activity in University Students: Results From a Microrandomized Trial
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DOI：
10.1093/abm/kaab028
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发表时间：
2021-04-19
影响因子：
3.8
通讯作者：
Aguilera, Adrian
中科院分区：
文献类型：
--
作者：
Figueroa, Caroline A.;Deliu, Nina;Aguilera, Adrian
基于认知-行为框架发送激励短信增加了大学生的日常体力活动，但效果是短暂的。背景低体力活动是常见身心障碍的重要风险因素。通过智能手机提供的体力活动干预可以帮助用户保持和增加体力活动，但结果好坏参半。目的：在一项微型随机临床试验中，我们评估了每天发送激励短信和反馈短信对学生群体每天体力活动变化的影响。方法我们包括93名参与者，他们使用体力活动APP“Diamante”进行为期6周的锻炼。每天，他们的手机计步器都会被动地跟踪参与者的步数。根据认知-行为框架，他们被随机接受不同类型的激励信息，并对他们的步骤进行反馈。我们使用广义估计方程模型来测试反馈和激励信息对步骤从一天到第二天的变化的有效性。结果与不发短信相比，发短信一开始会导致每日步数增加(729步，p=0.012)，但随着时间的推移，这种影响会减少。对每种短信类别分别进行的多变量分析表明，最初的积极效应是由激励性信息驱动的，尽管这种影响很小，而且在趋势上是显著的(717步；p=0.083)，而不是反馈信息(-276步，p=0.4)。结论基于认知-行为框架发送激励性体力活动短信可能对增加步数有积极作用，但这种作用随着时间的推移而减弱。需要进一步研究使用个性化和情境化来提高短信干预对体力活动结果的有效性。ClinicalTrials.gov标识符NCT04440553。
Sending motivational text-messages based on a cognitive-behavioral framework increases daily physical activity in university students, but the effect is short-lasting.Background Low physical activity is an important risk factor for common physical and mental disorders. Physical activity interventions delivered via smartphones can help users maintain and increase physical activity, but outcomes have been mixed. Purpose Here we assessed the effects of sending daily motivational and feedback text messages in a microrandomized clinical trial on changes in physical activity from one day to the next in a student population. Methods We included 93 participants who used a physical activity app, "DIAMANTE" for a period of 6 weeks. Every day, their phone pedometer passively tracked participants' steps. They were microrandomized to receive different types of motivational messages, based on a cognitive-behavioral framework, and feedback on their steps. We used generalized estimation equation models to test the effectiveness of feedback and motivational messages on changes in steps from one day to the next. Results Sending any versus no text message initially resulted in an increase in daily steps (729 steps, p = .012), but this effect decreased over time. A multivariate analysis evaluating each text message category separately showed that the initial positive effect was driven by the motivational messages though the effect was small and trend-wise significant (717 steps; p = .083), but not the feedback messages (-276 steps, p = .4). Conclusion Sending motivational physical activity text messages based on a cognitive-behavioral framework may have a positive effect on increasing steps, but this decreases with time. Further work is needed to examine using personalization and contextualization to improve the efficacy of text-messaging interventions on physical activity outcomes. ClinicalTrials.gov Identifier NCT04440553.