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Table 2 Means (SD), correlations, median absolute difference, and bland altman output for each device on the constructs of steps, MVPA, TDEE and sleep

From: The validity of consumer-level, activity monitors in healthy adults worn in free-living conditions: a cross-sectional study

   Nike fuelband Striiv smart pedometer Misfit shine Jawbone UP Withings pulse Fitbit zip Fitbit one
STEPS Reference BS GT3X+ BS BS GT3X+ GT3X+ GT3X+
  Reference mean (SD) 9959 (4844) 10516 (5070) 9959 (4844) 9959 (4844) 10516 (5070) 10516 (5070) 10516 (5070)
  r 0.94 0.99 0.94 0.97 0.99 0.99 0.99
  ICC 0.80 0.95 0.90 0.97 0.99 0.98 0.95
  MAD 2551 679 1002 806 660 447 779
  Range of differences -5309 to +143 -679 to +1887 -4693 to +1804 -1978 to +2252 -2386 to +832 -970 to +1596 -890 to +1849
  Bias -2529 675 -1054 -251 -632 464 584
  LoA (U) 910 2089 2288 1889 663 1799 1980
  LoA (L) -5968 -739 -4395 -2391 -1927 -871 -813
MVPA (min) Reference   GT3X+ GT3X+ GT3X+   GT3X+ GT3X+
Reference mean (SD)   58.5 (37.6) 58.5 (37.6) 58.5 (37.6)   58.5 (37.6) 58.5 (37.6)
  r   0.52 0.79 0.81   0.88 0.91
  ICC   0.08 0.79 0.70   0.36 0.46
  MAD   174.3 15.2 18.0   89.8 58.6
  Range of differences   +77.0 to +299.3 -79.7 to +36.3 -4.7 to +96.5   +10.0 to +157.2 +1.0 to +137.2
  Bias   190.4 -5.2 22.7   85.7 65.9
  LoA (U)   344.9 45.3 68.2   172.1 154.9
  LoA (L)   35.9 -55.8 -22.7   -0.8 -23.2
TDEE (kcal) Reference    BS BS BS BS BS
Reference mean (SD)    3005 (569) 3005 (569) 3005 (569) 3005 (569) 3005 (569)
  r    0.79 0.74 0.79 0.81 0.76
  ICC    0.51 0.27 0.54 0.57 0.55
  MAD    468 866 415 484 349
  Range of differences    -996 to +100 =1937 to -94 -1284 to -58 -1145 to +218 -1724 to -83
  Bias    -479 -898 -533 -497 -475
  LoA (U)    214 -150 170 158 265
  LoA (L)    -1172 -1647 -1236 -1152 -1216
SLEEP (min) Reference    BS BS BS   BS
Reference mean (SD)    423.6 (73.5) 423.6 (73.5) 423.6 (73.5)   423.6 (73.5)
  r    0.82 0.89 0.92   0.92
  ICC    0.71 0.85 0.87   0.90
  MAD    47.0 22.0 28.0   23.0
  Range of differences    -61 to +125 -31 to +132 -17 to +104   -45 to +76
  Bias    44.2 23.5 24.4   15.9
  LoA (U)    135.3 96.2 95.2   82.9
  LoA (L)    -46.9 -49.2 -46.5   -51.0
  1. Note: BS = BodyMedia SenseWear; GT3X + = ActiGraph GT3X+; MVPA = Moderate to Vigorous Physical Activity; MAD = Median Absolute Difference; LoA (U) = Limits of Agreement (Upper); LoA (L) = Limits of Agreement (Lower); TDEE = Total Daily Energy Expenditure.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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