Table 2. Adolescents’ bioelectrical impedance (n=489).

Bioelectrical impedance	Obese (n=78)	Eutrophic (n=411)	∆	d	p-value*
Resistance (ohms)	512.8±78.6	602.1±91.3	-89.3	1.05	<0.001
Resistance/height (ohms)	305.7±56.5	362.7±66.4	-57.0	0.92	<0.001
Reactance (ohms)	61.1±7.3	68.3±8.3	-7.2	0.92	<0.001
Reactance/height (ohms)	36.3±5.1	41.1±6.2	-4.7	0.85	<0.001
Phase angle (º)	6.9±0.9	6.5±0.8	0.3	0.47	0.003
Body fat (kg)	27.2±7.9	12.4±4.6	14.8	2.29	<0.001
Body fat (%)	33.4±7.9	22.1±7.4	11.3	1.48	<0.001
Fat-free mass (kg)	54.3±10.2	43.6±7.9	10.7	1.17	<0.001
Fat-free mass (%)	66.6±7.9	77.9±7.4	-11.3	1.48	<0.001

∆: variation among groups; d: Cohen’s effect size; *data for p<0.05.