Self-tracking via fitness apps is popular and has been described as a means to enhance body awareness and well-being. However, the effects of fitness-app use and specific app functions on well-being and body awareness have yet to be targeted in controlled experimental studies. In two randomized groups, a fitness tracker was used for 6 weeks, and in one group a daily step target was implemented. In a third control group, participants documented their physical activity. A daily diary method was used to measure well-being and body trusting. In Bayesian multilevel analyses, no time, group, or interaction effects were found. These results were robust when controlling for diverse variables. It can be concluded that exercise-related self-tracking and specific step goals do not substantially influence psychological well-being and body trusting. Considering the large variability in effects, potential effects can be assumed under conditions that are to be identified in further studies.

通过健身应用程序进行自我跟踪很受欢迎，并被描述为增强身体意识和幸福感的一种手段。然而，健身应用程序的使用和特定应用程序功能对健康和身体意识的影响尚未在对照实验研究中确定。在两个随机组中，使用健身追踪器 6 周，其中一组实施每日步数目标。在第三个对照组中，参与者记录了他们的身体活动。使用每日日记方法来衡量幸福感和身体信任度。在贝叶斯多级分析中，没有发现时间、群体或交互效应。当控制不同的变量时，这些结果是稳健的。可以得出的结论是，与运动相关的自我追踪和具体的步数目标不会对心理健康和身体信任产生实质性影响。考虑到影响的巨大变异性，可以在进一步研究确定的条件下假设潜在影响。