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.