Table 2.

User satisfaction (participants)

Questions							# Answers in VAS category
0 = negativ end, 100 = positive end		N	Min	Max	Mean	SD	≤30	31-69	≥ 70
1	How interesting was the training with the YouGrabber?	13	30	100	70.9	21.7	1	5	7
2	Did you feel discomfort or pain during the training?	13	32	100	76.1	27.7	0	5	8
3	Was the training length appropriate?	13	4	100	57.9	34.4	2	6	5
4	Would you like to continue with such training?	13	2	99	53.3	35.7	3	4	6
5	What is your general impression of the System?	13	25	92	66.1	22.7	1	5	7

Abbreviations: Min minimum, Max maximum, SD standard deviation, VAS score categories, ≤ 30 unsatisfied, 31-69 average, ≥ 70 satisfied