Table 7.

Tasks completion rate, reasons for failed completion, errors and comments of the trainees.

	Phase 1			Phase 2
Topic	Task completion rate (reason for failed completion)	Errors	Comments	Task completion rate (reason for failed completion)	Errors	Comments
Start exercise program	Task 1: 100% Task 2: 100%	–	–	Task 1: 100% Task 2: 100%	–
View first exercise	Task 3: 100% Task 4: 100% Task 5: 100%	–	–	Task 3: 100% Task 4: 100% Task 5: 100%	–	• “It would be nice to have videos instead of photos”
Record training diary	Task 6: 80% (it was not clear where to report the performedrepetitions) Task 7: 100% Task 8: 60% (very low sensitivity of the touch screen forthe Borg-Scale) Task 9: 80%	• No possibility to add series • No “return” button • No text was seeable while writing a note	• “Where can I click?” • “It is not clear where it is possible to insert something” • “When I was too fast: is there no “return” button?” • “I hoped I could see anywhere what I‘m writing”	Task 6: 100% Task 7: 100% Task 8: 100% Task 9: 100%	–	–
Automatically generated feedbacks	Task 10: 60% (screen disappeared too fast)	–	• “oh, that's too fast”	Task 10: 100%	–	• “It‘s cool to have these feedbacks”
Check training diary	Task 11: 0% (screen with the training diary was very crowded and disappeared after a few seconds)	• Figure could be enlarged with two digits but then not minimized to the original size • Axis were not labeled	–	Task 11: 60% (axis were not clearly labeled)	–	• “I normally like statistics and figures, but here I needed help”