Table 1.
Perception outcomes and measurement items.
| Outcomes | Measurement items |
|---|---|
| Perceived usefulness (PU) | PU1: Using the immersive VR-based exercise system to perform upper limb exercises would improve your upper limb motor function. |
| PU2: Using the immersive VR-based exercise system to perform upper limb exercises would increase exercise efficiency. | |
| PU3: Using the immersive VR-based exercise system to perform upper limb exercises would enhance exercise effectiveness. | |
| PU4: You found the immersive VR-based exercise system to be useful to perform upper limb exercises. | |
| Perceived ease of use (PEOU) | PEOU1: Learning to use the immersive VR-based exercise system was easy for you. |
| PEOU2: You found it easy to get the immersive VR-based exercise system to do what you wanted to do. | |
| PEOU3: It was easy to become skillful at using the immersive VR-based exercise system. | |
| PEOU4: You found the immersive VR-based exercise system easy to use. | |
| Attitude (ATT) | ATT1: Using the immersive VR-based exercise system to perform upper limb exercises is a good idea. |
| ATT2: Using the immersive VR-based exercise system to perform upper limb exercises is a wise idea. | |
| ATT3: You like the idea of using the immersive VR-based exercise system to perform upper limb exercises. | |
| ATT4: Using the immersive VR-based exercise system to perform upper limb exercises was a pleasant experience. | |
| Intrinsic motivation (IM) | IM1: You found using the immersive VR-based exercise system to perform upper limb exercises to be enjoyable. |
| IM2: The actual process of using the immersive VR-based exercise system to perform upper limb exercises was pleasant. | |
| IM3: You had fun using the immersive VR-based exercise system to perform upper limb exercises. | |
| Satisfaction (SAT) | SAT1: You are satisfied with the use of the immersive VR-based exercise system for performing upper limb exercises. |
| SAT2: You are satisfied with the immersive VR-based exercise system. | |
| Behavioural intention (BI) | BI1: You intend to continue using the immersive VR-based exercise system to perform upper limb exercises. |
| BI2: You plan to continue using the immersive VR-based exercise system to perform upper limb exercises. |
VR, virtual reality.