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Table 2 Robust compositional regression analysis of associations between 24-h movement behaviors and adiposity indicators

From: Replacing school and out-of-school sedentary behaviors with physical activity and its associations with adiposity in children and adolescents: a compositional isotemporal substitution analysis

 

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

  1. CI confidence interval, ilr1 isometric log-ratio (first coordinate), LPA light physical activity, MPA moderate physical activity, SB sedentary behaviors, VPA vigorous physical activity
  2. aVariable was transformed using natural logarithm before analysis
  3. bRegression coefficient for fully-adjusted model
  4. 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
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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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