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Usability testing of a monitoring and feedback tool to stimulate physical activity

机译：监控和反馈工具的可用性测试，以刺激身体活动

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Introduction: A monitoring and feedback tool to stimulate physical activity, consisting of an activity sensor, smartphone application (app), and website for patients and their practice nurses, has been developed: the 'It's LiFe!' tool. In this study the usability of the tool was evaluated by technology experts and end users (people with chronic obstructive pulmonary disease or type 2 diabetes, with ages from 40–70 years), to improve the user interfaces and content of the tool. Patients and methods: The study had four phases: 1) a heuristic evaluation with six technology experts; 2) a usability test in a laboratory by five patients; 3) a pilot in real life wherein 20 patients used the tool for 3 months; and 4) a final lab test by five patients. In both lab tests (phases 2 and 4) qualitative data were collected through a thinking-aloud procedure and video recordings, and quantitative data through questions about task complexity, text comprehensiveness, and readability. In addition, the post-study system usability questionnaire (PSSUQ) was completed for the app and the website. In the pilot test (phase 3), all patients were interviewed three times and the Software Usability Measurement Inventory (SUMI) was completed. Results: After each phase, improvements were made, mainly to the layout and text. The main improvement was a refresh button for active data synchronization between activity sensor, app, and server, implemented after connectivity problems in the pilot test. The mean score on the PSSUQ for the website improved from 5.6 (standard deviation [SD] 1.3) to 6.5 (SD 0.5), and for the app from 5.4 (SD 1.5) to 6.2 (SD 1.1). Satisfaction in the pilot was not very high according to the SUMI. Discussion: The use of laboratory versus real-life tests and expert-based versus user-based tests revealed a wide range of usability issues. The usability of the It's LiFe! tool improved considerably during the study.
机译：简介：已开发出一种用于刺激身体活动的监视和反馈工具，其中包括活动传感器，智能手机应用程序（app）和面向患者及其执业护士的网站：“这就是LiFe！”。工具。在这项研究中，技术专家和最终用户（患有慢性阻塞性肺疾病或2型糖尿病的人，年龄在40-70岁之间）评估了该工具的可用性，以改善该工具的用户界面和内容。患者和方法：该研究分为四个阶段：1）对六位技术专家进行启发式评估; 2）由五名患者在实验室进行的可用性测试; 3）现实生活中的飞行员，其中20名患者使用工具3个月; 4）由五名患者进行的最终实验室测试。在这两个实验室测试（第2和第4阶段）中，均通过思考程序和视频记录收集了定性数据，并通过有关任务复杂性，文本全面性和可读性的问题收集了定量数据。此外，该应用程序和网站的研究后系统可用性问卷（PSSUQ）已完成。在试点测试（第3阶段）中，所有患者均接受了3次访谈，并完成了软件可用性测量清单（SUMI）。结果：在每个阶段之后，都进行了改进，主要是在布局和文本方面。主要改进是用于刷新活动按钮，应用程序和服务器之间的活动数据的刷新按钮，该按钮在先导测试中出现连接问题后实施。网站在PSSUQ上的平均得分从5.6（标准差[SD] 1.3）提高到6.5（SD 0.5），而应用程序的得分从5.4（SD 1.5）提高到6.2（SD 1.1）。据SUMI称，飞行员的满意度不是很高。讨论：使用实验室测试和实际测试以及基于专家的测试和基于用户的测试，发现了广泛的可用性问题。 LiFeLi的可用性！在研究过程中，工具得到了很大的改善。

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