With the popularity of the health and wellness trend in recent years, smartphone fitness applications have become more and more popular. Thus, this study explored factors affecting the behavioral intention to use and the actual usage behavior of smartphone fitness apps from technical, health, and social perspectives by integrating the Social Cognitive Theory (SCT) and Unified Theory of Acceptance and Use of Technology (UTAUT). We examined whether perceived usefulness, perceived ease-of-use, social influence, self-efficacy, goal-setting, and self-monitoring predict usage behavior. Based on the survey responses of 1066 smartphone fitness apps users, we revealed that all of the variables, except for self-monitoring, significantly influence usage behavior, while behavioral intention acts as a total mediator between perceived usefulness, perceived ease-of-use and usage behavior. Drawing on the research findings, we suggest that influencing behavioral intention to use a fitness app can be an effective method to increase its adoption. Therefore, app developers need to pay attention to interventions that seek to enhance the usefulness of the app, provide professional counseling, as well as an opportunity for effortless goal setting features.

中文翻译：

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智能手机健身应用程序的使用：自我效能和自我调节的作用

近年来，随着健康趋势的普及，智能手机健身应用程序变得越来越流行。因此，本研究通过整合社会认知理论（SCT）和技术接受与使用统一理论（UTAUT），从技术，健康和社会角度探讨了影响智能手机健身应用程序使用行为意图和实际使用行为的因素。 。我们检查了感知的有用性，感知的易用性，社会影响力，自我效能感，目标设定和自我监控是否可以预测使用行为。根据对1066个智能手机健身应用程序用户的调查反馈，我们发现，除了自我监控之外，所有变量都对使用行为产生重大影响，而行为意图则充当了感知有用性，感知的易用性和使用行为。根据研究结果，我们建议影响使用健身应用程序的行为意图可能是增加其采用率的有效方法。因此，应用程序开发人员需要关注旨在增强应用程序实用性，提供专业咨询以及轻松实现目标设定功能的机会的干预措施。