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| Reference | Population | # | Age (yr) | Device under study | Activity monitored | Method of confirmation | Outcome |
|
| [28] | Healthy volunteers | 14 | Mean (SD) = 28.1 (6.2) | Pedometer, Digi-Walker SW-200 (Yamax)
Accelerometer, Zip and One (Fitbit)
Wearable devices, Flex (Fitbit), UP24 (Jawbone), FuelBand (Nike)
Mobile apps:
3iOS, Fitbit, Health Mate (Withings), Moves (ProtoGeo Oy)
Android app: Moves (ProtoGeo Oy) | Walking
500 and 1500 steps @ 3MPH | Observer counted steps using tally counter | High accuracy confirmed for all devices |
|
| [29] | Healthy volunteers | 15 | Range 21–33 | Wearable device, Fitbits (One, Zip, and Flex) | 6 activities for a 5-minute period @ 1.5, 3, and 4 MPH | Video analysis | 90% accuracy for all devices at all speeds |
|
| [30] | Healthy volunteers | 89 | Mean (SD) = 39 (±13.1) | Lumoback, Fitbit Flex, Jawbone Up, Nike+ FuelBand SE, Misfit Shine, Withings Pulse, Fitbit Zip, Omron
HJ-203, Yamax Digi-Walker SW-200, and Moves mobile application versus Optogait system for laboratory and ActivPAL for free living conditions | (A) Laboratory setting: walked twice on a treadmill (4.8 km/h) for 30 min
(B) Free living conditions, physical activity over a 24 hr period | (A) Laboratory setting, Optogait system
(B) Free living conditions,
ActivPAL | Good reliability for step count,
Lumoback,
Jawbone Up, Misfit Shine, Withings Pulse,
Fitbit Zip and Flex, and Digi-Walker
Free living conditions, Fitbit Zip highest validity, Nike+ FuelBand, lowest validity |
|
| [31] | Healthy volunteers | 21 | | Fitbit One, Fitbit Zip, Jawbone Up, Misfit Shine,
Nike FuelBand, Striiv Smart Pedometer, and Withings Pulse | 48 hr of PA in free living conditions | Research grade accelerometers: BodyMedia SenseWear and ActiGraph GT3X+ | Strong validity between research grade accelerometers and all activity monitors for step count and sleep duration Moderate validity for MVPA and TDEE
Strongest performers, Fitbit One, Fitbit Zip, and Withings Pulse |
|
| [32] | Patients with stroke and traumatic brain injury | 50 | Mean (SD) = 52.9 (±15.1) | Fitbit Ultra and Nike+ FuelBand | Two-minute walk test (2MWT) | Video analysis
and
research grade activity monitors: StepWatch Activity Monitor (SAM) and Yamax Digi-Walker SW-701
pedometer (YDWP) | In order of decreasing accuracy,
SAM, Fitbit Ultra, YDWP, and Nike+ FuelBand |
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