Table 6 Predictive and concurrent relationships between sleep and activity components at 1, 2, 3.5 and 5 years of age and percent fat at 5 yearsa
Age (years) | Mean % body fat (SD) at 5 years of age | Component | Regression coefficientb (SE) | p-value | 10% difference in minutes | Estimated difference (95% CI) in % body fat with a 10% increase in component | Estimated difference (95% CI) in % body fat with a 10% decrease in component |
|---|---|---|---|---|---|---|---|
1 (n = 232) | 15.6 (4.8) | Sleepc | − 1.24 (1.96) | 0.528 | 71 | −0.21 (− 0.86, 0.44) | 0.21 (− 0.44, 0.87) |
|  |  | Sedentaryd | 2.94 (1.97) | 0.137 | 56 | 0.41 (−0.13, 0.94) | −0.42 (− 0.98, 0.13) |
|  |  | LPA | −1.88 (0.91) | 0.041 | 18 | −0.18 (− 0.35, − 0.01) | 0.19 (0.01, 0.38) |
|  |  | MVPA | 0.18 (0.27) | 0.510 | 0.1 | 0.01 (−0.03, 0.06) | −0.02 (− 0.07, 0.03) |
2 (n = 158) | 15.1 (4.9) | Sleep | −0.07 (2.26) | 0.977 | 69 | −0.01 (− 0.74, 0.72) | 0.01 (− 0.73, 0.75) |
|  |  | Sedentary | 0.39 (2.09) | 0.852 | 46 | 0.05 (−0.46, 0.56) | −0.05 (− 0.59, 0.49) |
|  |  | LPA | 0.53 (2.06) | 0.796 | 28 | 0.06 (−0.36, 0.48) | −0.06 (− 0.51, 0.39) |
|  |  | MVPA | −0.86 (0.49) | 0.084 | 0.6 | −0.07 (− 0.15, 0.01) | 0.08 (− 0.01, 0.17) |
3.5 (n = 179) | 15.5 (5.0) | Sleep | −0.05 (3.59) | 0.988 | 65 | −0.01 (−1.12, 1.10) | 0.01 (−1.12, 1.14) |
|  |  | Sedentary | −0.54 (2.94) | 0.856 | 47 | −0.07 (− 0.80, 0.66) | 0.07 (− 0.69, 0.84) |
|  |  | LPA | 1.94 (2.10) | 0.357 | 29 | 0.20 (−0.23, 0.64) | −0.22 (− 0.68, 0.25) |
|  |  | MVPA | −1.35 (0.82) | 0.102 | 2 | −0.11 (− 0.25, 0.02) | 0.13 (− 0.02, 0.27) |
5 (n = 213) | 15.7 (4.8) | Sleep | −0.29 (3.36) | 0.932 | 64 | −0.04 (−1.06, 0.97) | 0.04 (− 0.99, 1.08) |
|  |  | Sedentary | 0.47 (2.50) | 0.851 | 49 | 0.06 (−0.57, 0.69) | −0.06 (− 0.72, 0.60) |
|  |  | LPA | 0.41 (1.86) | 0.825 | 28 | 0.04 (− 0.34, 0.42) | −0.05 (− 0.46, 0.36) |
|  |  | MVPA | −0.60 (0.77) | 0.438 | 3 | −0.05 (− 0.18, 0.08) | 0.06 (− 0.08, 0.20) |