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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

From: 24-h movement behaviors from infancy to preschool: cross-sectional and longitudinal relationships with body composition and bone health

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)
  1. LPA is light physical activity, MVPA is moderate-to-vigorous physical activity
  2. aAdjusted for randomised group, sex, primiparous, maternal education, household deprivation, ethnicity and maternal BMI. Analyses at 1 year of age further adjusted for whether the child was walking unaided or not walking
  3. bCoefficient for the first isometric log ratio (ilr) co-ordinate, which is proportional to the log ratio of the behavior and the geometric mean of the remaining behaviors; adjusted for remaining ilr co-ordinates
  4. cAll sleep estimates include naps where relevant
  5. dAll sedentary estimates include wake after sleep onset
  6. Bolded values indicate P < 0.05