Table 5.

Positive feedbacks from formative evaluation.

Topic	Sub-Topic	Positive Feedback
Usability	Utilization	“Both the motor and cognitive tasks were easy.”
	Learning	“There was no problem in learning the use of the system.”
	Pleasantness	“The 3D glass was not uncomfortable.” “The environment was beautiful.” “The cycle-ergometer was manageable.”
Sense of Presence	Spatial Presence	“The feeling was to be in the real park.” “I had the feeling of being suspended.” “The environment was relaxing.”
	Engagement	“I was focused on the task.” “I think I’ve been pedaling for 5 min.” “I forget you (the examiners) were here too.”
	Realism	“The environment was realistic.”
Cyber Sickness	Physical side-effects	None present side effect like cyber-sickness or nausea
Expectations		“This system could be useful for several types of patients.” “I think it’s easier to train with this tool.”