Table 1.

Details of activity measurement devices.

Activity measurement devices		Actigraph GT9X Link (reference monitor)	iHealth Edge (activity tracker)	Misfit Shine (activity tracker)	Yamax Digiwalker SW-200 (pedometer)	Apple Watch (smartwatch)
Parameters measured
	Steps	✓	✓	✓	✓	✓
	Distance	x	✓	✓	x	✓
	Intensity levels	✓	x	✓	x	x
	Heart rate	x	x	x	x	✓
	Calories burned	✓	✓	✓	x	✓
	Elevation	x	x	x	x	x
	Sleep time	✓	✓	✓	x	x
	Sleep quality	✓	✓	✓	x	x
Wear site		Right hip (and wrist)	Right hip (and wrist)	Right hip (and wrist)	Right hip (and wrist)	Wrist
Software		Actilife v6.6.3	iHealth MyVitals v	Misfit App v	None	WatchOS

^a✓: parameter being measured.

^bx: parameter not being measured.