Based on the study of virtual learning systems, motion learning theory, and instructional design theory, a virtual fitness trainer app named TRAINIME has been developed to be used as one of the tools to teach exercise for fitness education programs. This paper describes the design and development as well as the evaluation of the developed app. The methodology can be divided into two parts, first the design and development activity, and then the evaluation activities. The design and development process were guided by the motor learning theory and focused on the application of observation and random practice learning strategies in teaching fitness exercise. The app contains five virtual fitness trainers that show different movements that target different fitness levels. The effectiveness of the app in terms of the students’ motivation is measured using the Situational Motivational Scale (SIMS) and tested with a group of 54 students from a local higher institute of learning. Their engagement with the activities is measured with a structured interview. The results showed that the students had the motivation to do fitness activities after being in the practice session with the virtual fitness trainers. The respondents found that the activities were interesting, fun, and made them feel good. They were also motivated to follow the activities because they agreed that they had to do it and the activity was important for them. Most of the respondents agreed that the activities had a good effect on their fitness level and easy to follow for their physical activities. The interview revealed that the movements shown to them by the virtual trainers were very useful in engaging them with fitness activities. There are additional recommendations and added functions that should be included before the app can be fully deployed in a bigger market.

在对虚拟学习系统，运动学习理论和教学设计理论进行研究的基础上，开发了名为TRAINIME的虚拟健身教练应用程序，用作健身教育计划中锻炼运动的工具之一。本文介绍了开发应用程序的设计和开发以及评估。该方法可以分为两部分，首先是设计和开发活动，然后是评估活动。设计和开发过程以运动学习理论为指导，并专注于观察和随机练习学习策略在健身运动教学中的应用。该应用程序包含五个虚拟健身教练，可显示针对不同健身水平的不同动作。使用情景动机量表（SIMS）衡量该应用程序对学生动机的有效性，并与来自当地一所高等学府的54名学生进行测试。他们对活动的参与程度通过结构化访谈来衡量。结果表明，在与虚拟健身教练进行练习后，学生有动机进行健身活动。受访者发现这些活动有趣，有趣，并使他们感觉良好。他们也有动力去参加活动，因为他们同意必须这样做，而且活动对他们很重要。大多数受访者同意，这些运动对他们的健康水平有很好的影响，并且易于进行体育锻炼。采访显示，虚拟教练向他们展示的动作对于使他们参与健身活动非常有用。在将应用程序完全部署到更大的市场之前，还应包括其他建议和附加功能。