FernFH Distance Learning University of Applied Sciences, Ferdinand Porsche Ring 3, 2700 Wiener Neustadt, Austria.
Department for Child and Adolescent Psychiatry, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria.
Nutrients. 2019 Mar 27;11(4):713. doi: 10.3390/nu11040713.
Implementing integrated online prevention to reduce the risk of both obesity and eating disorders, in the school setting, is a promising approach. The challenge is to develop highly user-friendly and motivating programs, to foster adherence and effectiveness. The purpose of this study was to evaluate the usability of such a universal prevention program for students aged 14⁻19 years, and to address engagement issues. A mixed-methods approach was chosen, consisting of a think-aloud task, a semi-structured interview, and a questionnaire including items on sociodemographic characteristics and the System Usability Scale (SUS). Usability tests were conducted in two rounds, with five adolescents participating per round. Mean score in the SUS was 92.5 of 100 points (range 85⁻100), in the second round, after some adaptations from the participants' feedback. In the course of the think-aloud tasks and interviews, five major themes emerged-visual design, navigation, mode of transfer, content, and engagement conditions. Interesting headlines, gamification, and monitoring tools are crucial for engagement. Apart from the importance of using the program during school hours, the study showed that problems currently perceived as important by the target group, need to be considered and addressed, prior to offering them prevention programs, which highlights the importance of a user-centered design.
在学校环境中实施综合在线预防措施，以降低肥胖和饮食失调的风险，是一种很有前途的方法。挑战在于开发高度用户友好和激励性的程序，以促进坚持和有效性。本研究旨在评估针对 14-19 岁学生的这种通用预防计划的可用性，并解决参与度问题。采用了一种混合方法，包括出声思维任务、半结构化访谈以及包括社会人口特征和系统可用性量表（SUS）项目的问卷。在两轮可用性测试中，每轮有五名青少年参与。SUS 的平均得分为 100 分中的 92.5 分（范围为 85-100），第二轮根据参与者的反馈进行了一些调整。在出声思维任务和访谈过程中，出现了五个主要主题-视觉设计、导航、传输模式、内容和参与条件。有趣的标题、游戏化和监控工具对于参与至关重要。除了在上课时间使用该程序的重要性之外，研究还表明，在向目标群体提供预防计划之前，需要考虑和解决当前被该群体视为重要的问题，这突出了以用户为中心的设计的重要性。
