Table 2 Difference in oxygen consumption (VO) as estimated by the MyWellness Key (MVK) accelerometer versus indirect calorimetry by treadmill speed in 30 male and female subjects. Data are means (±SD).
| Speed (km·h-1) |
ICVO2 (ml·kg-1·min-1) |
MWKVO2 (ml·kg-1·min-1) |
Mean Error (±SD)* (ml·kg-1·min-1) |
Upper and Lower IC (ml·kg-1·min-1) |
Absolute error (ml·kg-1·min-1) |
p-value |
| 3.0 |
8.95 (1.15) |
8.16 (.67) |
-.79 (1.23) |
|-1.25, -.33| |
|-2.90, 2.03| |
< .001 |
| 4.5 |
11.19 (1.47) |
11.16 (.85) |
-.02 (1.67) |
|-.65, .58| |
|-2.64, 5.03| |
= .94 |
| 6.0 |
15.53 (2.04) |
16.04 (1.65) |
.51 (2.81) |
|-.54, 1.56| |
|-3.37, 6.24| |
= .33 |
| 8.0 |
27.51 (2.59) |
26.77 (2.73) |
-.74 (3.40) |
|-2.01, .53| |
|-6.80, 5.33| |
= .24 |
* Mean Error (± SD) = MWK minus IC ± standard error, IC = interval of confidenceMWK = oxygen consumption predicted by the MyWellness Key accelerometer, IC = oxygen consumption measured by indirect calorimetry
