Table 1.

Description of the seven wearable devices reviewed during the focus groups. We organized the devices based on wear location.

Feature of the device	ActivPAL	SitFIT	LUMOback	Vivofit and Jawbone UP	Sensoria Sock and SmartMove
Wear location	Thigh	Pocket	Lower back	Wrist	Foot and ankle
Feedback display	Paper graphs	Device, smartphone, Web	Smartphone	Smartphone, Web Sync with plug	Smartphone, Web
Frequency of feedback	Delayed until visit with study staff	Real time	Real time	Real time	Real time
Prompt type	Vibration	Vibration	Vibration	Red bara; Vibrationb	Unknown
Prompt adjustable	✓	✓	✓	✓	Unknown
Tracks sitting	✓	✓	✓	Inactivity	Potentially
Tracks sit to stand	✓	✓	✓		Potentially
Tracks steps	✓	✓	✓	✓	✓
Tracks sleep		✓	✓	✓
Tracks other	None	None	Posture	Calories, distance	Speed, calories, distance, cadence
Waterproof	With tape and supplies			✓	Washable
Battery life	12 daysb	Unknown	Up to 7 days	1 yeara; 7 daysb	Unknown

^aFeature of the Garmin Vivofit.

^bFeature of the Jawbone UP.