对基于机器学习的下肢运动训练系统进行启发式评估和最终用户测试,以治疗 55 岁或以上人群的膝关节疼痛

IF 2.5 2区 工程技术 Q2 ENGINEERING, INDUSTRIAL
Tianrong Chen , Jiayin Chen , Calvin Kalun Or
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引用次数: 0

摘要

目的我们利用机器学习技术开发了一套交互式运动训练系统,以帮助 55 岁或以上患有膝关节疼痛的人进行下肢运动,从而改善他们的膝关节健康状况。该系统有三个特点:基于视频的运动示范、运动动作的实时反馈以及运动表现和进展跟踪。本研究旨在评估该系统的计算机原型设计,并确定其可用性和最终用户的使用意向(即对该系统的接受程度)。三名人为因素从业人员参照 64 条设计原则,找出了设计上的不足之处。此外,我们还招募了 10 名膝关节疼痛患者,让他们在研究实验室中使用原型系统完成五项任务。我们记录并检查了任务成功率、求助次数、任务中遇到的困难以及对可用性和接受度的看法。结果发现了四项设计缺陷,涉及错误识别和恢复、导航、听觉感知和帮助文档。大多数参与者在校准摄像头和进行练习时遇到了困难。结论启发式评估和最终用户测试的使用揭示了系统检测交互式自助系统设计缺陷的能力,从而可以对系统进行有效的调整。此外,我们的系统显示出了帮助个人控制膝关节疼痛的潜力,但有必要进行迭代可用性测试,以确定更多改进措施。此外,我们还提交了几项设计建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Heuristic evaluation and end-user testing of a machine learning-based lower-limb exercise training system for management of knee pain in individuals aged 55 years or over

Objective

Using machine learning techniques, we have developed an interactive exercise training system to assist individuals aged 55 years or over with knee pain to perform lower-limb exercises to improve their knee health. The system has three features: video-based exercise demonstrations, real-time feedback on exercise movements, and tracking of exercise performance and progress. The current study aimed to evaluate the design of the computer prototype of the system, and determine its usability and end users’ intention to use it (i.e., acceptance of it).

Methods

Heuristic evaluation and end-user testing of the computer-based prototype system were conducted. Three human factors practitioners identified the design deficiencies, with reference to 64 design principles. In addition, 10 individuals with knee pain were recruited to use the prototype system to complete five tasks in the study laboratory. We recorded and examined the task success rate, number of requests for assistance, difficulties encountered during tasks, and perceptions of usability and acceptance.

Results

Four design deficiencies were identified, regarding recognition and recovery of errors, navigation, auditory perception, and help documentation. Most participants had difficulty in calibrating the camera and performing exercises. However, in general, the prototype system was perceived as usable and acceptable.

Conclusions

The use of heuristic evaluation and end-user testing revealed the capacity to systematically detect design deficiencies in interactive self-help systems, allowing for effective system adjustments. Moreover, our system shows potential for individuals managing knee pain, but conducting iterative usability testing is necessary to identify additional improvements. Furthermore, several design propositions have been submitted.

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来源期刊
International Journal of Industrial Ergonomics
International Journal of Industrial Ergonomics 工程技术-工程:工业
CiteScore
6.40
自引率
12.90%
发文量
110
审稿时长
56 days
期刊介绍: The journal publishes original contributions that add to our understanding of the role of humans in today systems and the interactions thereof with various system components. The journal typically covers the following areas: industrial and occupational ergonomics, design of systems, tools and equipment, human performance measurement and modeling, human productivity, humans in technologically complex systems, and safety. The focus of the articles includes basic theoretical advances, applications, case studies, new methodologies and procedures; and empirical studies.
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