Table 4.
Best possible equations calculated for the estimation of METs for each group.
| Group | Axis | Equation | RMSE | p-Value |
|---|---|---|---|---|
| All participants (n = 23; 10 girls) |
Y | METS = 0.383 + 0.001 · Y-Axis AC + 0.020 · BM + 0.263 · GMFCS | 0.62 | <0.001 |
| VM | METS = 0.014 + 0.0004 · VM AC + 0.026 · BM + 0.206 · GMFCS | 0.60 | <0.001 | |
| Cerebral palsy (n = 11, 4 girls) |
Y | METS = −0.309 + 0.0004 · Y-Axis AC + 0.034· BM + 0.245 · GMFCS | 0.61 | <0.001 |
| VM | METS = 2.535 + 0.0004 · VM AC + 0.144 · A − 0.033 · H + 0.037 · BM + 0.190 · GMFCS | 0.57 | <0.001 |
A, age (years); AC, activity counts (counts·min−1); BM, body mass (kg); GMFCS, Gross Motor Function Classification System (level I, 1; level II, 2; or level III, 3); H, height (cm); RMSE, root sum of squared errors; VM, vector magnitude.