Sedentary behavior patterns and adiposity in children: a study based on compositional data analysis

BMC Pediatrics

Table 2 Compositional robust regression model estimates for the adiposity markers in total sample

	Fat mass (%)			Fat mass index (kg/m²)			Visceral adipose tissue (cm²)
	β_ilr1	(95% CI)	p-value	β_ilr1	(95% CI)	p-value	β_ilr1	(95% CI)	p-value
Model 1
SB (h/week)	0.06	(−0.12, 0.24)	0.527	0.04	(−0.19, 0.27)	0.724	0.09	(−0.26, 0.44)	0.614
LPA (h/week)	0.13	(−0.08, 0.34)	0.230	0.18	(−0.09, 0.45)	0.200	0.32	(−0.11, 0.75)	0.140
MVPA (h/week)	−0.19	(−0.32, −0.06)	0.005	−0.22	(−0.39, −0.05)	0.011	−0.41	(−0.67, −0.15)	0.002
Model 2
Short sedentary bouts (h/week)	−0.28	(−0.64, 0.08)	0.122	− 0.38	(−0.83, 0.08)	0.104	−0.55	(−1.30, 0.20)	0.148
Middle sedentary bouts (h/week)	0.18	(0.01, 0.34)	0.040	0.20	(−0.01, 0.41)	0.065	0.37	(0.03, 0.71)	0.034
Long sedentary bouts (h/week)	−0.02	(−0.08, 0.05)	0.629	−0.02	(−0.10, 0.07)	0.713	−0.07	(−0.20, 0.07)	0.332
LPA (h/week)	0.31	(0.00, 0.62)	0.053	0.41	(0.01, 0.80)	0.043	0.64	(0.00, 1.28)	0.050
MVPA (h/week)	−0.18	(−0.30, −0.06)	0.003	−0.22	(−0.37, −0.06)	0.007	−0.39	(−0.63, −0.15)	0.001

BMI Body mass index, CI Confidence interval, ilr1 Isometric log-ratio (first coordinate), LPA Light intensity physical activity, MVPA Moderate-to-vigorous physical activity, SB Sedentary behavior
All dependent variables were transformed before analysis using the natural logarithm
Independent variables are expressed as the first pivot coordinate which represents the relative contribution of one behavior relative to remaining behaviors
All models were adjusted for sex and age
Bold values denote significant chance in adiposity status

ISSN: 1471-2431