Table 2.
Robust compositional regression analysis of associations between 24-h movement behaviors and adiposity indicators
| Boys (n = 128) | Girls (n = 208) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fat massa (%) | Fat mass indexa (kg/m2) | Fat massa (%) | Fat mass indexa (kg/m2) | |||||||||
| βilr1b | (95% CI) | p value | βilr1b | (95% CI) | p value | βilr1b | (95% CI) | p value | βilr1b | (95% CI) | p value | |
| Sleep (min/day) | −0.67 | (−1.62, 0.27) | 0.159 | −0.65 | (−1.92, 0.63) | 0.318 | −0.46 | (−0.96, 0.05) | 0.075 | −0.71 | (−1.45, 0.03) | 0.058 |
| SB school (min/day) | −0.32 | (− 1.09, 0.45) | 0.411 | −0.51 | (−1.49, 0.46) | 0.297 | −0.20 | (−0.58, 0.18) | 0.302 | −0.20 | (−0.76, 0.35) | 0.473 |
| SB out-of-school (min/day) | 0.63 | (0.03, 1.22) | 0.040 | 0.76 | (0.03, 1.49) | 0.040 | 0.62 | (0.25, 0.98) | 0.001 | 0.80 | (0.28, 1.32) | 0.003 |
| LPA school (min/day) | 0.18 | (−0.54, 0.90) | 0.615 | 0.17 | (−0.68, 1.02) | 0.691 | 0.38 | (−0.06, 0.81) | 0.086 | 0.52 | (−0.09, 1.12) | 0.094 |
| LPA out-of-school (min/day) | 0.11 | (−0.50, 0.71) | 0.732 | 0.20 | (−0.50, 0.90) | 0.569 | −0.43 | (−0.86, − 0.01) | 0.047 | −0.56 | (−1.21, 0.08) | 0.086 |
| MPA school (min/day) | 0.23 | (−0.19, 0.65) | 0.284 | 0.30 | (−0.19, 0.78) | 0.230 | −0.08 | (−0.41, 0.25) | 0.636 | −0.07 | (−0.54, 0.39) | 0.765 |
| MPA out-of-school (min/day) | −0.02 | (−0.56, 0.52) | 0.940 | −0.14 | (−0.73, 0.45) | 0.640 | 0.20 | (−0.19, 0.59) | 0.305 | 0.25 | (−0.33, 0.83) | 0.388 |
| VPA school (min/day) | −0.05 | (−0.16, 0.05) | 0.298 | −0.07 | (−0.19, 0.06) | 0.281 | 0.04 | (−0.02, 0.09) | 0.200 | 0.05 | (−0.03, 0.13) | 0.219 |
| VPA out-of-school (min/day) | −0.08 | (−0.21, 0.06) | 0.254 | −0.06 | (−0.22, 0.09) | 0.430 | −0.07 | (−0.15, 0.01) | 0.077 | −0.07 | (−0.18, 0.04) | 0.190 |
CI confidence interval, ilr1 isometric log-ratio (first coordinate), LPA light physical activity, MPA moderate physical activity, SB sedentary behaviors, VPA vigorous physical activity
aVariable was transformed using natural logarithm before analysis
bRegression coefficient for fully-adjusted model
Independent variables are expressed as the first pivot coordinate which represents the relative contribution of one behavior relative to remaining behaviors within a 24-hour cycle. Results were derived from nine regression models corresponding to the pivot coordinate representations of specific time-use components