Quantitative evaluation and training of the reach-to-target ability in stroke patients are needed for postdischarge rehabilitation, which can be achieved using a motion-tracking system. However, most of these systems are either costly, involve sophisticated parameter interpretation, or are not designed for rehabilitation. We developed an interactive reach-to-target assessment and training system (IRTATS) based on a camera and three marker straps to detect tracking signals. IRTATS supports audiovisual feedback, personal goal setting, and use in a small clinic or home without the internet. This study aims to evaluate the reliability, validity of IRTATS, and its measurement accuracy of the range of motion (ROM). Ninety-nine stroke patients and 20 healthy adults were recruited for the study. Kinematic variables and active joint ROM (AROM) were assessed using IRTATS. The AROM was measured by a universal goniometer, and scores from multiple clinical scales concerning motor and activity capability were calculated. Although the AROMs measured by IRTATS and the goniometer did not agree, IRTATS has clinically acceptable reliability and validity. Three variables in IRTATS could discriminate the motor performance of patients and healthy subjects. IRTATS may provide a new supplement to conventional physiotherapy in the assessment of the reach-to-target ability in stroke patients. Graphical abstract System configuration • The system is based on an infrared camera and the adjustable marker straps as a sensor module. • It is portable and compact, and has clinically acceptable reliability and validity. • It supports audiovisual feedback, personal goal setting, and use in regions without the internet. • It can be used as an adjunct to conventional physiotherapy in the assessment of the reach-to-target ability.

中文翻译：

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一个交互式的运动跟踪系统，用于在卒中幸存者中进行基于家庭的评估和培训到达目标任务的初步研究。

出院后康复需要对中风患者的达到目标能力进行定量评估和培训，这可以使用运动跟踪系统来实现。但是，这些系统中的大多数要么成本高昂，要么涉及复杂的参数解释，要么并非为恢复而设计。我们开发了基于照相机和三个标记带的交互式到达目标评估和培训系统（IRTATS），以检测跟踪信号。IRTATS支持视听反馈，个人目标设定以及在没有互联网的小型诊所或家庭中使用。这项研究旨在评估IRTATS的可靠性，有效性以及其运动范围（ROM）的测量准确性。该研究招募了99名中风患者和20名健康成人。使用IRTATS评估运动学变量和活动关节ROM（AROM）。用通用的测角仪测量AROM，并从涉及运动和活动能力的多种临床量表中计算出分数。尽管通过IRTATS和测角仪测量的AROM不一致，但是IRTATS具有临床上可接受的可靠性和有效性。IRTATS中的三个变量可以区分患者和健康受试者的运动表现。IRTATS可以为中风患者达到目标能力的评估提供传统物理治疗的新补充。图形摘要系统配置•系统基于红外摄像头和可调节的标记带作为传感器模块。•它轻巧便携，并具有临床上可接受的可靠性和有效性。•支持视听反馈，设定个人目标，并在没有互联网的地区使用。•在评估达到目标能力时，可以用作常规物理疗法的辅助手段。