Table 3.

Usability evaluation of the activity trackers.

Question		Total (N=10)	iHealth Edge (N=2)	Apple Watch (N=4)	Misfit Flash (N=4)
What is the ease of use?
	Very difficult	0	0	0	0
	Difficult	0	0	0	0
	Neutral	2	1	0	1
	Easy	7	1	3	3
	Very easy	1	0	1	0
How did you perceive the wearability?
	Very uncomfortable	0	0	0	0
	Uncomfortable	1	0	0	1
	Neutral	1	0	0	1
	Comfortable	6	2	2	2
	Very comfortable	2	0	2	0
To what extent stimulated the activity tracker to move more?
	Not at all	2	0	0	2
	To some extent	2	1	0	1
	To a moderate extent	3	1	2	0
	To a great extent	2	0	1	1
	To a very great extent	1	0	1	0