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. 2017 Aug 17;5(8):e122. doi: 10.2196/mhealth.7167
Activity Energy expenditure (kcal/min) Biases (kcal/min)

Calorimeter Movn ActiGraph Criterion Convergent

Mean (SD) Mean (95% CI)
Rest 1.75 (0.64) 3.25 (1.80) 1.83 (1.68) 1.60 (0.85-2.35)d,e 1.30 (0.65-1.96)
4 km/h 4.15 (1.20) 4.66 (1.69) 4.10 (1.83) 0.52 (−0.04 to 1.08)e 0.59 (0.22-0.95)
6 km/h 6.42 (2.13) 6.95 (2.45) 6.67 (2.30) 0.74 (−0.05 to 1.52)e 0.40 (−0.02 to 0.82)
10 km/h 11.94 (2.22) 11.78 (2.18) 10.26 (2.52) −0.53 (−1.67 to 0.60)a 1.08 (0.01-2.15)
12 km/h 14.15 (2.68) 11.76 (2.97) 10.87 (1.86) −1.90 (−3.37 to −0.42)a-c 1.05 (−0.81 to 2.92)
Total 7.08 (4.79) 7.45 (4.15) 6.54 (3.90) 0.36 (−0.07 to 0.78) 0.93 (0.58-1.29)f

a-eSystematic difference in bias between locomotive speeds (P<.001-.01, Bonferroni-corrected).

aRest.

b4km/h.

c6km/h.

d10km/h.

e12km/h.

fOverall systematic bias compared with the ActiGraph device (P<.001).

Energy expenditure=average during third and fourth min of each intensity bout.