Table 4.

Associations between physical activity of different intensities and body fatness indicators Z-scores in boys (N = 156)

	Fat mass (kg)			Fat mass (%)			Fat mass index (kg · m−2)			Visceral adipose tissuea (cm2)
	βb	(95% CI)	P-value	βb	(95% CI)	P-value	βb	(95% CI)	P-value	βb	(95% CI)	P-value
LPAa
Model 1	−0.27	(–0.77, 0.23)	0.281	−0.28	(–0.77, 0.22)	0.272	−0.22	(–0.72, 0.27)	0.375	−0.29	(–0.78, 0.21)	0.260
Model 2	−0.07	(–0.55, 0.40)	0.757	−0.16	(–0.68, 0.36)	0.540	−0.09	(–0.61, 0.44)	0.747	−0.08	(–0.60, 0.43)	0.754
Model 3	−0.07	(–0.55, 0.41)	0.781	−0.16	(–0.69, 0.37)	0.544	−0.08	(–0.60, 0.45)	0.779	−0.12	(–0.64, 0.40)	0.653
MVPAa
Model 1	−0.28	(–0.61, 0.06)	0.104	−0.31	(–0.64, 0.03)	0.071	−0.28	(–0.61, 0.05)	0.098	−0.30	(–0.63, 0.03)	0.078
Model 2	−0.25	(–0.55, 0.06)	0.111	−0.27	(–0.61, 0.06)	0.111	−0.24	(–0.58, 0.09)	0.158	−0.24	(–0.57, 0.09)	0.155
Model 3	−0.26	(–0.56, 0.05)	0.103	−0.28	(–0.61, 0.06)	0.109	−0.25	(–0.59, 0.09)	0.145	−0.22	(–0.55, 0.11)	0.193
VPAa
Model 1	−0.16	(–0.30, –0.02)	0.029	−0.16	(–0.30, –0.01)	0.034	−0.16	(–0.30, –0.02)	0.027	−0.12	(–0.27, 0.03)	0.119
Model 2	−0.12	(–0.25, 0.01)	0.071	−0.15	(–0.29, –0.01)	0.048	−0.15	(–0.29, –0.01)	0.039	−0.10	(–0.25, 0.05)	0.175
Model 3	−0.12	(–0.25, 0.01)	0.073	−0.15	(–0.29, –0.01)	0.048	−0.15	(–0.29, –0.01)	0.040	−0.10	(–0.25, 0.04)	0.168

Model 1 – unadjusted (raw) model

Model 2 – model 2 was adjusted for age and body height

Model 3 – model 3 was adjusted for model 2 and sedentary time

CI confidence interval, LPA light physical activity, MVPA moderate-to-vigorous physical activity, VPA vigorous physical activity

^aValues were transformed to natural logarithms before analysis

^bβ gives the regression coefficient of the standardized values (Z-score) for each variable