Table 6.

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

	Phase 1			Phase 2
Topic	Tasks completion rate (reason for failed completion)	Errors	Comments	Tasks completion rate (reason for failed completion)	Errors	Comments
Register new trainees	Task 1: 100% Task 2: 0% (unfamiliar format of birth date)			Task 1: 100% Task 2: 100%
Create an individual exercise program	Task 3: 100% Task 4: 100% Task 5: 100% Task 6: 100%	• Therapists did not see the photos and description of the exercises • Some instructions were written in English (even though the program was in German) • Values higher than 20 could be recorded for the 9–20 Borg-scale • In the input window the series and breaks were numbered continuously, although only the series should be numbered • The exercises were numbered, but this number had no meaning		Task 3: 100% Task 4: 100% Task 5: 100% Task 6: 100%	• The first digit of the repetitions could not be deleted • The order of the training parameters was not consistent within the different exercises • When a new exercise was added to the exercise program, it appears in the first place instead of at the end of the exercise program	• “I would delete all the exercises and then make a new program” • “I would like to have my own standard program” • “The possibility to copy the amount of repetitions and series would be great….but otherwise it is a useful design” • “A drag and drop button would be nice”
Check a training diary	Task 7: 100% Task 8: 100% Task 9: 0% (figures and tables were too crowded and confusing)	• The order of the list with the participants could not be changed	• “The figures and tables are really not intuitive and self-explaining” • “They [the figures] are totally useless” • “This [the figures] is not readable, there is one line upon the other”	Task 7: 100% Task 8: 100% Task 9: 60% (no scales for the x- y-axes, colors of the lines were not distinguishable from each other)		• “This is not clear, the colors of the lines are confusing” • “I think this should be a target-performance comparison” • “There are too many lines, it is not obvious which line represents what”
Adapt individual exercises	Task 10: 100% Task 11: 100% Task 12: 100% Task 13: 100%	–	–	Task 10: 100% Task 11: 100% Task 12: 100% Task 13: 100%	–	–